Bolthole Index

Charles County, Maryland

Building permits, zoning and land rules in Charles County, Maryland

51Index Score / 100
#13 of 24 in Maryland

Charles County, Maryland requires a building permit for mapped-floodplain development and a permit for activity within a watercourse; ask Codes, Permits, and Inspections about construction elsewhere12. Unincorporated Charles County has district-specific zoning, while La Plata and Indian Head have their own zoning; onsite sewage systems and individual wells remain with the Charles County Department of Health34567.

At a glance

Building permit
Required for mapped-floodplain development; watercourse activity also needs a permit; confirm other work with Codes, Permits, and Inspections12
Zoning
District-specific county zoning; La Plata and Indian Head have their own zoning8456
Septic permits
Charles County Department of Health, Environmental Health Division7
RV living
Generally limited to 10 days in a month outside a licensed trailer park unless written permission is granted9
Tiny homes
No tiny-home-specific rule was confirmed; district home-size standards and structure classification matter1011
Owner-builder
A homeowner may do limited electrical repairs; broader wiring needs a Homeowner Permit and inspections12
Minimum home size
District-specific: listed zones use tiered 1,250-, 1,450- and 1,650-square-foot standards, with exceptions13
Private well
The local approving authority must issue a permit before a well is drilled, with a narrow emergency exception14

Who to call

Building permits

Charles County Planning and Growth Management, Codes, Permits, and Inspections

Building permits, plan review, and inspections

301-645-0692

PGMAdmin@CharlesCountyMD.gov

200 Baltimore Street, La Plata, MD 20646

Online permits →

Zoning

Charles County Planning and Growth Management, Planning and Zoning

Parcel zoning, permitted uses, setbacks, and dimensional standards

301-645-0692

PGMAdmin@CharlesCountyMD.gov

200 Baltimore Street, La Plata, MD 20646

Septic permits

Charles County Department of Health, Environmental Health Division

Onsite sewage disposal systems, individual wells, and related inspections

301-609-6751

mdh.charlescountyehadmin@maryland.gov

4545 Crain Highway, White Plains, MD 20695

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Charles County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Charles County, Maryland?

Charles County has adopted a building code covering residential and commercial construction and associated plumbing, mechanical, electrical, energy-conservation, and fuel-gas work15. Charles County expressly requires a building permit for every development in a FEMA-mapped floodplain, including grading, filling, clearing, storage, subdivision, and construction or improvement of a structure16. Activity outside a mapped floodplain but within a natural or man-made watercourse also requires a permit1. We could not confirm a blanket permit answer for every project outside a floodplain, so contact Codes, Permits, and Inspections before starting work2. A farm building or other outbuilding costing less than $2,500 falls outside the Charles County building code, but that narrow exception still requires a zoning permit before an accessory use or structure starts in an agricultural, rural, or residential zone1718.

Who is the Charles County building department, and how do you reach it?

The county contact is Planning and Growth Management's Codes, Permits, and Inspections office at 200 Baltimore Street, La Plata, MD 20646; call 301-645-0692 or email PGMAdmin@CharlesCountyMD.gov2. The county also provides an online permitting page2. Charles County performs inspections at stages of permitted construction, and successful completion of all inspections completes the permit19. A Certificate of Use and Occupancy is then issued when applicable, and a building or structure must maintain a valid temporary or permanent certificate to be occupied2021. Published fees vary by permit, review, inspection, project size, floor area, and construction cost, so use the current fee schedule for the actual estimate22.

Does Charles County have zoning?

Unincorporated Charles County has zoning, with uses and development standards set by district34. La Plata and Indian Head have their own zoning; onsite sewage systems and individual wells remain with the Charles County Department of Health567. County zoning maps identify parcel districts, and the district schedules set lot area, height and impervious coverage23242526. In Agricultural Conservation (AC), the “all other permitted uses” row requires a 75-foot front setback, 40-foot side setbacks totaling 80 feet, and a 50-foot rear setback27. Accessory uses and structures in agricultural, rural and residential zones need a zoning permit before work starts; agricultural or residential accessory structures generally need 6 feet from side and rear lot lines, cannot occupy recorded easements, and are restricted in required front yards18. Detached agricultural or single-family detached accessory structures generally need 6 feet from other buildings on the lot18. Ask Planning and Zoning to confirm the parcel’s district, applicable use row and accessory-structure exceptions before placing a barn, shed or garage1118.

How do septic permits work in Charles County?

The Charles County Department of Health's Environmental Health Division is the local contact for onsite sewage systems and individual wells7. An onsite sewage permit is required before construction or alteration, and no part of a system may be covered or used before inspection and approval2829. If community sewer is adequate and economically available, the approving authority may require connection30. Off-grid sanitation is not a free-form alternative: without pressurized water, human waste must go to an approved privy or portable unit, and holding tanks cannot serve new construction or added capacity31. Only 0.9% of county soils lack severe limitations for a conventional drain field, so make the site evaluation an early purchase contingency32. Reach Environmental Health at 301-609-6751 or mdh.charlescountyehadmin@maryland.gov33.

Can you live in an RV or tiny home on your land in Charles County?

Charles County generally limits a trailer coach or recreational vehicle used for dwelling or sleeping outside a licensed trailer park to 10 days in any month, unless the Board of County Commissioners grants written permission after inspection and approval9. A campground or camp needs a special exception in WCD, AC or RC and must meet site standards34. We could not confirm a tiny-home-specific occupancy rule; ask Planning and Zoning to classify the proposed structure and use11. Detached houses in RL, RM, RH, RV, RO, PRD, MX, PUD, WPC, PMH, CER, CMR and CRR face tiered 1,250-, 1,450- and 1,650-square-foot finished-living-area standards; minor subdivisions may use the lowest tier throughout, and the percentage-distribution rules have exceptions, including homes outside specified public/municipal wastewater service areas13. A Class B manufactured home needs a special exception in RR or RL and a continuous permanent masonry foundation, apart from ventilation and access35. In the Planned Manufactured Home Park (PMH) zone, structures must meet the greater setback: 75 feet from the park boundary or 100 feet from the center line of an adjoining street or road right-of-way36.

How do you build a home in Charles County, step by step?

  1. Ask Planning and Zoning whether county or municipal zoning controls the parcel, then confirm the district, residential use, lot area, setbacks, home-size standard, height, and coverage limit4231124102526.
  1. Confirm floodplain and watercourse constraints; mapped-floodplain development requires a permit before work begins16.
  1. Have Environmental Health evaluate sewage disposal early because only 0.9% of county soils lack severe conventional drain-field limits3233.
  1. Obtain the onsite sewage permit before installing or altering a system28. A licensed well driller must obtain a separate well permit before drilling, except under the emergency procedure14.
  1. Ask Codes, Permits, and Inspections which building and trade applications, plans, fees, and reviews apply222.
  1. If access work enters a county right-of-way, obtain the county permit first37.
  1. Complete every inspection listed with the permit and secure a valid Certificate of Use and Occupancy before moving in3821.

What should you check before buying land in Charles County?

Start by identifying whether county or municipal zoning controls the parcel, then verify its district and subdivision history45639. Confirm the planned house against district-specific lot area, height, impervious-coverage, and tiered living-area standards24252610. An accessory apartment is allowed only in listed zones and must receive Health Department approval for water and sewage before the zoning permit is issued40. Make a satisfactory septic evaluation a contract contingency because only 0.9% of Charles County soils lack severe limitations for a conventional drain field32. Check flood maps and road ownership because floodplain work and driveway access can require separate approvals163741. Budget carrying costs: the effective property-tax rate is about 1%, and the median annual property-tax bill is about $4,1794243.

Watch-outs

  • Do not assume a rural parcel allows full-time RV occupancy: Charles County generally caps dwelling or sleeping use outside a licensed trailer park at 10 days in a month without written permission9.
  • Charles County’s listed detached-house zones have tiered finished-living-area minimums; garages, porches, decks, unfinished basements and attics do not count, and subdivision and wastewater-service exceptions need careful review13.
  • Charles County has adopted a building code, but the confirmed permit rule here covers mapped-floodplain development; ask Codes, Permits, and Inspections to classify work elsewhere1512.
  • A homeowner's limited electrical-work allowance does not cover panel work, service changes, pools, piers, or detached outbuildings; broader wiring requires a Homeowner Permit and inspections12.

Sources

  1. Floodplain Management in Charles County, MD, quoted and re-checked
  2. Charles County Planning and Growth Management, Codes, Permits, and Inspections (charlescountymd.gov)
  3. Codes, Ordinances, and Regulatory Documents | Charles County, MD, quoted and re-checked
  4. Article I: Introduction - Charles County, MD, quoted and re-checked
  5. Town of La Plata: Section 191-9 - Application of regulations (Charles County), quoted and re-checked
  6. Town of Indian Head: Chapter 440: Zoning - Town of Indian Head, MD (Charles County), quoted and re-checked
  7. On-Site Systems Division, quoted and re-checked
  8. How do I determine the Zoning for my Property?, quoted and re-checked
  9. Chapter 130: Trailers and Trailer Parks, quoted and re-checked
  10. Chapter 297, Article XIII: Minimum Standards for Special Exceptions and Uses Permitted With Conditions - Charles County, MD, quoted and re-checked
  11. Charles County Planning and Growth Management, Planning and Zoning (charlescountymd.gov)
  12. Board of Electrical Examiners, quoted and re-checked
  13. Article XIII: Minimum Standards for Special Exceptions and Uses Permitted With Conditions - Charles County, MD, quoted and re-checked
  14. Water Well Construction, quoted and re-checked
  15. Inspections & Review Fund Summary - Fiscal Year 2027 Proposed Budget, quoted and re-checked
  16. Floodplain Management in Charles County, MD, quoted and re-checked
  17. Maryland Code, Local Government Article, §§ 13-901 through 13-906 (Maryland statewide rule), quoted and re-checked
  18. ecode360.com, quoted and re-checked
  19. Overview of the Development Process, quoted and re-checked
  20. Overview of the Development Process, quoted and re-checked
  21. Temporary Certificate of Use and Occupancy Extension Request, quoted and re-checked
  22. Department of Planning & Growth Management: FY2027 Fees & Charges - Adopted, quoted and re-checked
  23. How do I determine the Zoning for my Property?, quoted and re-checked
  24. ecode360.com, quoted and re-checked
  25. ecode360.com, quoted and re-checked
  26. Article XVIII: Site Design, quoted and re-checked
  27. Figure VI: Schedules of Zone Regulations for Base Zones, quoted and re-checked
  28. Proposed Action on Regulations: Sewage Disposal in Maryland, quoted and re-checked
  29. regs.maryland.gov, quoted and re-checked
  30. regs.maryland.gov, quoted and re-checked
  31. regs.maryland.gov, quoted and re-checked
  32. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  33. Charles County Department of Health, Environmental Health Division (charlescountyhealth.org)
  34. Article XIII: Minimum Standards for Special Exceptions and Uses Permitted With Conditions, quoted and re-checked
  35. Article XIII: Manufactured-home zoning standards, quoted and re-checked
  36. Article VII: Planned Development Zone Regulations, quoted and re-checked
  37. Charles County Road Ordinance, quoted and re-checked
  38. Schedule an Inspection, quoted and re-checked
  39. Article III: Subdivision Types, quoted and re-checked
  40. Article XIII: Accessory-apartment zoning standards, quoted and re-checked
  41. Access Management/Permits - MDOT SHA (Maryland statewide rule), quoted and re-checked
  42. Effective property tax rate: Bolthole Index county data
  43. Median property tax bill: Bolthole Index county data

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Found land here? Start a Property Hunt →

Compared with neighboring counties

Unlike all 6 of its neighbors, Charles County requires a building permit only in limited cases.

RuleCharles CountyCalvert CountyPrince George's CountySt. Mary's CountyAnne Arundel CountyMontgomery CountyTalbot County
Building permitLimitedRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Dept. of HealthCounty Health Dept.County Health Dept.County Health Dept.County Dept. of HealthCounty Dept. of Permitting ServicesCounty Health Dept.

County locator

Charles County in Maryland

51
County map
Charles County highlighted among the Maryland counties · colored by Index score

How Charles County scores

Seclusion22100% ev.
Self-Sufficiency69100% ev.
Admin Boringness42100% ev.
Durability82100% ev.
Property Autonomy43100% ev.
Carry Cost56100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$454kTypical home
1%Property tax
$7,951Land / acre
43.9"Annual rain
1.3% of yrsSevere drought
5.3 / yr (+5)Mid-century 100°F days
13 daysMid-century dry spell
2.11" (+7.2%)Mid-century 1-day rain
1.46×Wildfire change factor
100%Forward climate coverage
$1,623Home insurance / yr
2.8% / yrInsurance growth
0.7%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
108,675People within 30 min
10,658,330People within 2 hr
324,726Radius comparison (15 mi)
375.6People / sq mi
2.4%Federal land
86.1%Land at 15% slope or less
0.9%Soils rated "not limited" for septic (strict USDA rating)
2,463 acWorkable land screen
73.4%Wooded land
90.4 tonsBiomass / forest ac
57.3°FAvg temp

Scout Charles County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Charles County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Cities and towns in Charles County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Town of Indian Head · Town of Port Tobacco Village

Answers from the rulebook for Charles County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Charles County rules

  • Building permitLimited

    Development in areas designated as a floodplain on the Flood Insurance Rate Maps for Charles County, and activity outside the floodplain but within a natural or man-made watercourse.

    • A building permit is required for all development in designated floodplain areas.
    • All necessary permits must be obtained before development can take place.
    • Any activity outside the floodplain but within a natural or man-made watercourse also requires a permit.
    • The source does not establish a countywide permit requirement for every type of construction or development outside these areas.
    “The Charles County Floodplain Management Ordinance regulates development in the floodplain area. A building permit is required for all development in areas designated as a floodplain on the Flood Insurance Rate Maps for Charles County.”
  • Owner-builder exemptionConditional

    Single-family homeowners performing limited electrical repairs or electrical work in their own residence.

    • Single-family homeowners may perform repairs or replace portable appliances, lighting fixtures, fuses, lamps, sockets, or make minor repairs at existing outlets in the homeowner’s residence.
    • Electrical work beyond that limited scope, including changes to wiring, requires a Homeowner Permit and inspections.
    • Homeowners cannot wire swimming pools, piers, detached outbuildings, or associated electrical work.
    • Work cannot be performed on panel boards, main distribution panels, circuit breaker panels, fuse boxes, or similar equipment.
    • No service change work may be performed under a Homeowner’s Permit.
    • The homeowner must apply and pay the application and examination fee.
    • The application is reviewed by the Board of Electrical Examiners and Supervisors; if accepted, the homeowner must take the examination and achieve at least 70%.
    • The Homeowner’s Electrical Permit is valid for one year after issuance.

    minimum examination score: >= 70 percent · Homeowner’s Electrical Permit validity: 1 year (after issuance)

    “Single-family homeowners may perform repairs or replace portable appliances, lighting fixtures, fuses, lamps, sockets, or make minor repairs at existing outlets in the homeowner’s residence. Electrical work beyond this scope, including making changes to wiring, requires the homeowner to obtain a Homeowner Permit from the Board of Electrical Examiners and Supervisors and receive permits and inspections through the Department of Planning and Growth Management’s Division of Codes, Permits, and Inspection Services.”
  • Building code adoptedAdopted (with conditions)

    Residential and commercial construction, including plumbing, mechanical, electrical, energy conservation, and fuel gas work regulated under the Building Construction Code of Charles County, Maryland, Chapter 224.

    • The cited county budget document describes the code and its covered construction and trade areas; it does not state a separate geographic exclusion.
    • Specific permits, plan review, inspections, and code amendments may apply to the project.

    code chapter: 224

    “Within these sections, staff is responsible for permitting including the plan review of the architectural review and the inspections of the structure and associate trade permits in accordance with the Building Construction Code (Code of Charles County Maryland, Chapter 224) which covers both residential and commercial construction, plumbing, mechanical, electrical, energy conservation and fuel gas.”
  • InspectionsRequired

    Projects with issued Charles County permits for which inspections are listed on the permit, including building, trade, fire-safety, planning and zoning, stormwater, forest conservation, sediment and erosion control, and health-related inspections as applicable.

    • Required inspections are listed and provided with the issued permit.
    • The appropriate agency depends on the inspection type.
    • Building/trade/fire-safety inspections are scheduled through Planchek; other listed inspection types use the responsible Charles County or other governmental agency.
    • Applicants should contact the Charles County Permits Center if unsure whether inspections apply.
    “Required inspections will be listed and provided with your issued permit. Below is the contact information for the appropriate agencies to schedule your required inspections.”
    One more reviewed finding on this topic
    • Required — Construction performed under Charles County building and trade permits.
      “Inspections are performed at various stages of construction. [...] Upon successful completion of all inspections, the permit is complete, and a Certificate of Use & Occupancy is issued as applicable.”
  • Certificate of occupancyRequired

    Occupation of a building or structure in Charles County.

    • The building or structure must maintain a valid Certificate of Use & Occupancy, either Temporary or Permanent, to be occupied.
    • A Temporary Certificate of Use & Occupancy extension may be requested by the applicant or owner listed on the building permit.
    • Extensions may be granted for up to 180 days by the Building Code Official and/or delegated staff.
    • An extension request incurs an extension fee and any adjusted inspection fees for outstanding inspections; the invoice must be paid before review.
    • Failure to maintain a valid certificate may result in enforcement action and possible fines.

    maximum temporary certificate extension: <= 180 days

    “Please note: A building or structure must maintain a valid Certificate of Use & Occupancy, either Temporary or Permanent, to be occupied. Failure to maintain a Certificate of Use & Occupancy may result in enforcement action and possible fines.”
    One more reviewed finding on this topic
    • Limited — Buildings and structures in Charles County subject to the county building-permit process.
      “Upon successful completion of all inspections, the permit is complete, and a Certificate of Use & Occupancy is issued as applicable.”
  • County-wide zoningPresent (with conditions)

    Land, buildings, and structures in Charles County, Maryland, under Chapter 297 of the Charles County Code.

    • Chapter 297 does not apply to Charles County government or County-owned land, buildings, structures, or other facilities that would otherwise be regulated.
    • Land use and building activity must comply with the uses and development standards of the zone in which the land or building is located.
    • The chapter does not prohibit exclusively agricultural use of land.
    “The Zoning Maps, as amended, shall reflect the current zoning of all land in Charles County and be filed with the Clerk of the Circuit Court.”
  • Local zoningVaries (with conditions)

    Countywide local zoning, aggregated across Charles County zoning districts and applicable local land-use controls.

    • Land use and development standards depend on the zone in which the land is located.
    • The county zoning maps reflect the current zoning of all land in Charles County.
    • The ordinance does not apply to county-owned land that would otherwise be regulated by the chapter.
    • Exclusively agricultural use is not prohibited by the compliance provision.
    “Land can only be used and a building or other structure can only be erected, moved, structurally altered, added to, enlarged, used or otherwise modified in accordance with the uses and development standards prescribed by the zone in which the building or land is located.”
    3 more reviewed findings on this topic
    • Present (with conditions) — Individual properties in Charles County, where zoning is established through zoning maps adopted by the Charles County Commissioners and implemented through the County Zoning Regulations.
      “Zoning for individual properties is established by a set of Zoning Maps that are adopted by the Charles County Commissioners that implement the latest version of the Charles County Comprehensive Plan.”
    • Varies (with conditions) — Local zoning controls aggregated across Charles County, including county-administered areas and incorporated municipalities.
      “The Planning Department coordinates all of the development-related functions across the Town and oversees planning, development and permitting activities, as well as Code enforcement. The department also works to update and implement the Comprehensive Plan and Zoning Ordinance to ensure the Town's vision is achieved.”
    • Present (with conditions) — Charles County's locally administered zoning ordinance and zoning maps.
      “The zones established in this chapter are bounded and delineated as designated on the Zoning Maps and subsequent amendments thereof.”
  • Zoning districtsPublished

    Charles County zoning district and parcel-zoning information published through county zoning maps and county zoning regulations.

    • Individual-property zoning is established by zoning maps adopted by the Charles County Commissioners.
    • Specific base-zone information is available through the County Zoning Regulations.
    • The zoning maps page states that maps are based on tax-map numbers and provides a zoning index map.
    “Zoning for individual properties is established by a set of Zoning Maps that are adopted by the Charles County Commissioners that implement the latest version of the Charles County Comprehensive Plan.”
  • Minimum dwelling sizeSpecified

    Single-family detached residential dwellings in the RL, RM, RH, RV, RO, PRD, MX, PUD, WPC, PMH, CER, CMR, and CRR Zones.

    • Finished livable space excludes space enclosed by garages, porches, decks, unfinished basements, or attic areas.
    • Twenty-five percent of units may be at least 1,250 square feet.
    • Twenty-five percent of units may be at least 1,450 square feet.
    • Remaining units must be at least 1,650 square feet.
    • Units under 1,650 square feet must be mixed within each subdivision.
    • One hundred percent of units in minor subdivisions, as defined under § 278-17 of the Charles County Subdivision Regulations, may be at least 1,250 square feet.
    • The percentage rules do not apply to deed-restricted developments for residents age 55 or older that exclude school-age children; approved low-to-moderate-priced dwelling projects constructed by a nonprofit approved by the Housing Authority Board; qualifying ten percent-or-less portions of existing platted subdivisions of 10 or more single-family detached units approved after the source's unspecified date; or dwelling units outside public/municipal wastewater collection service areas identified as S-1, S-3, or S-5.
    • Exterior materials and design require prior approval by the Site Design and Architectural Review Board and/or County review designee, except for qualifying approved nonprofit low-to-moderate-priced dwelling projects.

    minimum finished livable space: >= 1250 square feet (Subject to the unit-percentage and subdivision conditions stated in the ordinance.) · remaining-unit minimum finished livable space: >= 1650 square feet (Units below 1,650 square feet must be mixed within each subdivision.) · intermediate minimum finished livable space: >= 1450 square feet (Applies to up to 25% of units.)

    “The minimum square footage of finished, livable space, not to include the square footage enclosed by garages, porches, decks, unfinished basements or attic areas, will not be less than 1,250 square feet, subject to the following:”
    One more reviewed finding on this topic
    • District specific (with conditions) — Single-family detached residential dwellings in the RL, RM, RH, RV, RO, PRD, MX, PUD, WPC, PMH, CER, CMR, and CRR Zones.
      “This use shall be permitted with conditions in the RL, RM, RH, RV, RO, PRD, MX, PUD, WPC, PMH, CER, CMR and CRR Zones, subject to the following: The minimum square footage of finished, livable space, not to include the square footage enclosed by garages, porches, decks, unfinished basements or attic areas, will not be less than 1,250 square feet, subject to the following:”
  • Minimum lot sizeDistrict specific (with conditions)

    Lots and residential development in Charles County zoning districts

    • Minimum lot area is determined by the applicable zoning district schedule.
    • The applicable figure is subject to other requirements of Chapter 297.
    • Additional lot-size requirements may apply under state health rules or other county law or regulation.
    “Figure VI-1 Agricultural Conservation Zone Figure VI-2 Rural Residential Zones Figure VI-3 Village Zones Figure VI-4 Development District Residential Zones”
  • SetbacksDistrict specific (with conditions)

    Permitted uses in the Charles County Agricultural Conservation (AC) Zone, subject to the applicable use row in Figure VI-1.

    • The applicable setback depends on the use and zoning district; this claim is limited to the AC Zone row for all other permitted uses.
    • The schedule is marked Supp 15, Jul 2025; that revision notation is not treated as an effective date.

    front setback for all other permitted uses in AC Zone: >= 75 feet · side setback for all other permitted uses in AC Zone: >= 40 feet · total side setbacks for all other permitted uses in AC Zone: >= 80 feet · rear setback for all other permitted uses in AC Zone: >= 50 feet

    “Minimum Yard Requirements (feet) [...] Front Side Total Rear [...] All other permitted uses 3 acres 150 200 120 75 40 80 50 40 3”
    2 more reviewed findings on this topic
    • Specified — Accessory uses and structures in Charles County agricultural, rural, and residential zones.
      “No agricultural or residential accessory use or structure shall be established within six feet of any side or rear lot line [...]”
    • Specified — All structures in the Charles County Planned Manufactured Home Park (PMH) Zone.
      “All structures shall be set back at least 75 feet from the boundary of the PMH or 100 feet [...] whichever is greater.”
  • Lot coverageDistrict specific (with conditions)

    Impervious surface coverage on lots subject to Charles County zoning regulations

    • Impervious surfaces include buildings, roads, sidewalks, patios, parking areas, and other concrete or asphalt areas.
    • The maximum impervious surface ratio is the ISR established in the applicable Schedule of Zone Regulations in Articles VI through VIII.

    impervious surface ratio: zone schedule

    “Impervious surfaces (surfaces that do not absorb rain, including all buildings, roads, sidewalks, patios, parking areas and any other areas paved in concrete or asphalt) shall not occupy more than the established impervious surface ratio (ISR) contained in the Schedule of Zone Regulations (Articles VI through VIII).”
  • Building heightDistrict specific (with conditions)

    Buildings in Charles County zoning districts

    • Maximum building height is established by the applicable zoning district schedule.
    • Height rules are subject to other requirements of Chapter 297.
    • Exceptions apply to specified structures and uses, including houses of worship, private schools, hospitals, high-rise apartment dwellings, towers, steeples, flagpoles, antennas, and certain roof structures.
    “General regulations. Minimum lot area, area per dwelling unit, building setback from adjacent lot lines, lot width, front yard, side yard, rear yard and maximum building height, as displayed in Figure VI-1, shall apply subject to other requirements of this chapter.”
  • Living in an RVLimited

    Occupancy of trailer coaches or recreational vehicles for dwelling or sleeping purposes in Charles County.

    • Outside a duly licensed trailer park, occupancy is limited to no more than 10 days in any month unless written permission is obtained from the Board of County Commissioners following inspection and approval by the Charles County Sanitary District.
    • Recreational vehicle parks are permitted with conditions in the CC and CV Zones and by special exception in the AC and RC Zones.
    • A recreational vehicle park must be at least 10 acres, provide required water and sewage facilities, meet service-building, fire-protection, setback, screening, and site-plan requirements, and may not use a mobile recreation vehicle or camping trailer as a permanent residence.
    • Vehicles in a recreational vehicle park may not be used for more than three consecutive months.

    maximum occupancy outside licensed trailer park: <= 10 days per month (Except in a duly licensed trailer park or with written Board of County Commissioners permission after Sanitary District inspection and approval.) · maximum use in recreational vehicle park: <= 3 consecutive months (The park owner must keep arrival and departure logs.)

    “Use and occupancy limitations for trailer coaches; exception. It shall be unlawful for any person to maintain or use any trailer coach which is occupied for dwelling or sleeping purposes at any place within Charles County for a period of more than 10 days in any month, except in a duly licensed trailer park or upon obtaining written permission from the Board of County Commissioners following inspection and approval by the Charles County Sanitary District.”
  • Camping on your landLimited

    Temporary camping and campground use in Charles County.

    • Campgrounds and camps are permitted by special exception in the WCD, AC and RC Zones.
    • The minimum site area is 10 acres.
    • Required standards include at least 150 feet of frontage unless waived by the Board, campsite setbacks, a maximum average density of 15 campsites per acre of developed campground, minimum 900-square-foot campsites excluding parking, and one automobile parking space per campsite or equivalent central parking.
    • Recreational vehicle parks are separately permitted with conditions or by special exception in specified zones and are subject to water, sewage, fire, setback, screening, and site-plan requirements.

    minimum campground area: >= 10 acres · minimum campground frontage: >= 150 feet (The Board may waive the frontage requirement if ingress and egress facilities are adequate.) · maximum campground density: <= 15 campsites per acre of developed portion (The density includes service roads, toilet facilities, and service buildings.) · minimum campsite area: >= 900 square feet (Parking space is excluded.)

    “4.02.240 Campgrounds and camps. This use is permitted by special exception in the WCD, AC and RC Zones, provided that the following standards are met:”
  • Manufactured homesLimited

    Occupancy of Class B manufactured homes as single-family residences in Charles County.

    • Class B manufactured homes are permitted by special exception only in the RR and RL Zones.
    • A continuous permanent masonry foundation must be installed under the structure, except for required ventilation and access.
    • Other manufactured-home types and locations remain subject to the applicable County Zoning Code, building-code, and health requirements.
    “3.01.500 Single-family detached residential: Class B manufactured home. A Class B manufactured home is permitted by special exception in the RR and RL Zones, provided that a continuous permanent masonry foundation, except for the required ventilation and access, is installed under the structure.”
  • Accessory dwellingsLimited

    Accessory apartments, including units in a principal dwelling or accessory building, in Charles County.

    • The use is permitted with conditions in the HVC, HVG, HVR, AC, RC, RR, RV, RL, RM, RH, RO, MX, TOD, WCD, CER, CMR and CRR Zones.
    • An accessory apartment may be located in the principal dwelling or an accessory building.
    • The minimum floor area is 300 square feet; an accessory apartment in a principal dwelling may not exceed 50% of that dwelling's gross floor area; an accessory-building apartment may not exceed 50% of the accessory structure and may have no more than two bedrooms.
    • No more than one accessory apartment is permitted per existing single-family dwelling.
    • Before issuance of a zoning permit, the proposed water-supply and sewage-disposal method must be approved by the County Department of Health.
    • Off-street parking is required under Article XX.

    minimum accessory-apartment floor area: >= 300 square feet · maximum floor-area share in principal dwelling: <= 50 percent of gross floor area · maximum floor-area share in accessory structure: <= 50 percent of accessory structure · maximum bedrooms in accessory-building apartment: <= 2 bedrooms · maximum accessory apartments per existing single-family dwelling: <= 1 apartment

    “3.01.700 Single-family detached residential: primary residence with accessory apartment. This use is permitted with conditions in the HVC, HVG, HVR, AC, RC, RR, RV, RL, RM, RH, RO, MX, TOD, WCD, CER, CMR and CRR Zones, subject to the following requirements:”
  • Who permits septicMixed (with conditions)

    On-site sewage disposal systems and individual wells in Charles County; implementation is through the county health department/local approving authority under Maryland's delegated program.

    • Maryland Department of the Environment provides technical assistance, direction, and interpretation of COMAR requirements to county health departments and local approving authorities.
    • The county health department is identified by Charles County's inspection page as the Health Department contact for required inspections.
    “Charles County Department of Health Division of Environmental Health Services [...] Septic System Installation Permit Application”
  • Subdividing landRegulated (with conditions)

    Subdivision of land in Charles County

    • Subdivisions not meeting the minor-subdivision definition are major subdivisions.
    • Major subdivisions must comply with Article IV processing and approval requirements.
    • Minor subdivisions are limited by the creation of no more than five lots from a parcel existing June 15, 1976, or seven lots from a parcel, residue, or remainder existing December 31, 2012, subject to the ordinance text and exceptions.
    • A minor subdivision also cannot involve extension of a public water or sewer system as part of private development or off-site drainage improvements serving other proposed lots.

    minor subdivision lot threshold for parcel existing June 15, 1976: <= 5 lots (subject to § 278-17 and its stated qualifications) · minor subdivision lot threshold for parcel, residue, or remainder existing December 31, 2012: <= 7 lots (subject to § 278-17 and its stated qualifications)

    “All subdivisions of land that do not conform to the definitions established in § 278-17 for minor subdivisions shall be considered as major subdivisions. The processing and approval of all major subdivisions are to comply with Article IV of these regulations.”
  • Driveway accessLimited

    Work associated with driveway access within a Charles County right-of-way.

    • A county permit is required before work within a County right-of-way.
    • The FY2027 fee schedule lists a $67 permit application fee for blanket permits and driveway access permits.
    • The cited rule does not establish that every private driveway, regardless of right-of-way involvement, requires this permit.

    driveway access permit application fee: 67 USD (FY2027 fee schedule)

    “No person shall do any work within a County right-of-way without first obtaining a permit from the County.”
  • Building in a floodplainRequired

    All development in areas designated as floodplain on the FEMA Flood Insurance Rate Maps for Charles County, including grading, filling, clearing, dredging, extraction, storage, subdivision, and construction or improvement of structures or buildings.

    • All necessary permits must be obtained before development can take place.
    • Proposed development should not increase flooding or create a dangerous flooding situation, especially on another person's property.
    • Structures must be constructed to minimize flood damage.
    • Activity outside the floodplain but within a natural or man-made watercourse also requires a permit.
    • Structures required to be elevated must have an Elevation Certificate.
    • Substantial-improvement and substantial-damage determinations may require market-value documentation and detailed itemized cost estimates prepared by a licensed contractor.

    substantial improvement threshold: >= 50 percent of current market value (For additions, renovations, or alterations in the mapped 100-year floodplain)

    “A building permit is required for all development in areas designated as a floodplain on the Flood Insurance Rate Maps for Charles County.”
  • Permit feesPublished (with conditions)

    County Planning and Growth Management building, trade, zoning, critical-area, development-services, and related permit fees during the FY2027 fee period.

    • The adopted fee schedule states a period from July 1, 2026 through June 30, 2027.
    • Fees vary by permit type, review type, inspection type, project size, square footage, construction cost, and other listed parameters.

    new construction/additions/alterations/change of occupancy permit application fee: 120 USD · other building/zoning/critical area permit application fee: 60 USD · trade permit application fee: 28 USD each (Electrical, plumbing, or mechanical) · residential building permit plan review: per 0.19 USD per sq. ft.; $139 minimum · commercial building permit plan review: per 0.19 USD per sq. ft.; $222 minimum · driveway access permit application fee: 67 USD (Listed with blanket permits)

    “Permit Application Fee for New Construction, Additions, Alterations, or Change of Occupancy $120 Permit Application Fee for All other Building/Zoning/Critical Area Permit Types $60 Trade Permit Application Fees (Electrical/Plumbing/Mechanical) $28 Each”

Maryland rules that apply here

  • Septic permitRequired

    Construction, alteration, increased flow, or changed wastewater character for an on-site sewage disposal system in Charles County, Maryland, where an on-site system is used.

    • A permit from the Approving Authority is required before construction or attempted construction of an on-site sewage disposal system.
    • An application must include a site plan identifying soil evaluations, percolation and other test locations, the proposed design and treatment methods, existing and proposed improvements, proposed and existing wells serving the property, relevant data for wells or disposal systems within 100 feet of the property line, and any additional information requested by the Approving Authority.
    • The Approving Authority may issue a permit only if it determines that the site and proposed design can safely dispose of sewage and conform with applicable laws and regulations.
    • An on-site sewage disposal permit may not be issued unless the project conforms with the approved county water and sewerage plan.
    • The permit is valid for no more than 2 years from issuance and may be renewed at the Approving Authority's discretion; additional testing or evaluations may be required before renewal.
    • Charles County Department of Health Environmental Health Services performs its functions under Maryland Department of the Environment and Maryland Department of Health authority and reviews onsite sewage-disposal plans.

    permit validity: <= 2 years (May be renewed at the discretion of the Approving Authority; additional testing or evaluations may be required before renewal.) · nearby well or disposal-system data area: <= 100 feet of the property line (Relevant datum must be included in the application site plan.)

    “A person may not construct or attempt to construct an on-site sewage disposal system without first receiving a permit from the Approving Authority.”
    One more reviewed finding on this topic
    • Required — Construction or alteration of an onsite sewage disposal system, and construction or alteration of structures served or to be served by such a system, statewide in Maryland.
      “A person may not construct or attempt to construct an on-site sewage disposal system without first receiving a permit from the Approving Authority.”
  • Septic inspectionRequired

    Installed on-site sewage disposal systems in Charles County before the system is covered or used.

    • No part of an on-site sewage disposal system may be covered or used until inspected and approved by the Approving Authority or an approved third party.
    • If hydrologic or geologic problems exist, or construction may adversely affect the sewage system, the Approving Authority may require installation, inspection, and approval before issuance of the building permit.
    • Property-transfer inspections are separately subject to Maryland licensing requirements for the inspector.
    “No part of an on-site sewage disposal system may be covered or used until it has been inspected and approved by the Approving Authority or a third party approved by the Approving Authority.”
    One more reviewed finding on this topic
    • Required — Any onsite sewage disposal system before it is covered or used statewide in Maryland.
      “No part of an on-site sewage disposal system may be covered or used until it has been inspected and approved by the Approving Authority or a third party approved by the Approving Authority.”
  • Off-grid sanitationLimited

    Off-grid human-waste disposal on property in Charles County without water under pressure.

    • If water under pressure is unavailable, all human body wastes must be disposed of in approved privies or portable units subject to COMAR 26.04.02.08.
    • Sewage may be disposed of only under an approved on-site sewage disposal permit or another method approved by the Approving Authority.
    • A privy or portable unit must comply with the applicable requirements of Regulation .08.
    • Holding tanks are limited: they may address an existing system failure when community sewer is unavailable and on-site repair protective of public health is not possible, but may not serve new construction or add capacity for a change in use.
    • Holding tanks must hold at least seven days of effluent, be watertight, and have an acceptable maintenance contract and pumping schedule.

    holding tank minimum effluent capacity: >= 7 days (Subject to the holding-tank provisions and Approving Authority approval.)

    “If water under pressure is not available, all human body wastes shall be disposed of in approved privies or portable units subject to Regulation .08 of this chapter.”
  • Well permitRequired

    Well construction in Charles County, Maryland, including potable and non-potable supply, geothermal, irrigation, geotechnical/environmental, and industrial wells regulated by Maryland's well-construction program.

    • A well may not be constructed until the Approving Authority issues a permit to drill it, except under the emergency procedure in COMAR 26.04.04.06.
    • The Approving Authority may issue a well-construction permit only to a person licensed by the State Board of Well Drillers as a master well driller.
    • A licensed well driller submits the permit application to the local County Approving Authority.
    • A separate permit is required for each well, except that the Approving Authority may permit a well cluster under one permit.
    • A potable-water well requires a Certificate of Potability before it is put into service.
    • A permit is not required for reworking or repairing an existing well without deepening. Deepening an identified well does not require a permit except in areas of known water-quality problems; a completion report is required. If the identification number cannot be provided, the well driller must apply for a permit.
    • Charles County Department of Health Environmental Health Services reviews onsite water-well construction under Maryland Department of the Environment and Maryland Department of Health authority.

    permit validity: 12 months (May be extended in 6-month increments upon written request by the well driller.)

    “A well may not be constructed until the Approving Authority has issued a permit to drill the well, except as provided in Regulation .06 of this chapter.”
    One more reviewed finding on this topic
    • Required — Construction of any well in Maryland, including wells serving private or non-community water supplies.
      “A well construction permit is required for any well that is constructed in the State of Maryland.”
  • Mandatory utility hookupConditional

    Residential and other establishments statewide in Maryland, particularly properties governed by COMAR 26.04.02, concerning use of individual water or sewerage systems and connection to community systems.

    • Except as authorized by the Department, a person may not construct or install an on-site sewage disposal system to serve property already connected to a community sewerage system.
    • If a community sewerage system is adequate and economically available to the building served, the Approving Authority may require connection.
    • An individual water supply or sewerage system may be allowed where a community system is unavailable or not required only if the Department finds the individual system adequate and safe before the community system is scheduled to be available.
    • The individual system must be constructed in the most economical and convenient way to permit future connection, and the person must guarantee connection when the county governing body sets a time, including by posting a bond or making another arrangement the Department considers necessary and adequate.
    • The Secretary may order connection when a public water or sewerage system is directly available and the existing private system is or could become prejudicial to health or the environment.
    “The Approving Authority may require a connection to the community sewerage system.”
    One more reviewed finding on this topic
    • Sewer (with conditions) — Properties in Charles County where a community sewerage system is adequate and economically available.
      “Except as authorized by the Department, a person may not construct or install an on-site sewage disposal system to serve a property that is already connected to a community sewerage system. If a community sewerage system is adequate and economically available to the building to be served, the Approving Authority may require a connection to the community sewerage system.”
  • Permit processPublished (with conditions)

    Nontidal wetland and nontidal waterway construction permit applications administered by the Maryland Department of the Environment.

    • Applications may be submitted online through the Environmental Service Center.
    • Applicants may pay associated fees and track application status online.
    • The Joint Federal/State Application for alteration of a floodplain, waterway, tidal wetland, or nontidal wetland is identified as revised October 2022.
    • Effective July 1, 2025, applicants for Dam Safety and Small Pond Approvals must include Appendix B with the Joint Permit Application.
    • Application review fees increased effective July 17, 2026.
    “Nontidal wetlands and nontidal waterway construction applications can be submitted online through our Environmental Service Center. You can submit your application, pay any associated fees, and track the status of your application.”
  • county zoning authorityGeneral

    Maryland counties adopting and enforcing zoning and planning laws, including for unincorporated county territory within the county's jurisdiction.

    • The authority is exercised through local laws and remains subject to other public general law, public local law, and any applicable State-government regulatory authority.
    • The statute states that the State policy is that planning and zoning controls are implemented by local government.
    “A county may enact local laws relating to zoning and planning to protect and promote public safety, health, morals, and welfare, including: [...] It is the policy of the State that planning and zoning controls shall be implemented by local government.”
  • county building authorityLimited

    Maryland counties requiring building permits and adopting or enforcing building codes for residential construction in unincorporated areas.

    • Local Government Article § 13-901 applies to all counties except Anne Arundel County, Baltimore City, Baltimore County, Cecil County, Charles County, Howard County, Prince George’s County, Queen Anne’s County, and Worcester County.
    • Under § 13-901(c), covered county governing bodies may regulate building construction, adopt and enforce building codes, require building permits, impose permit and inspection fees, and inspect buildings and structures.
    • Section 13-902 applies only to Calvert, Caroline, Dorchester, Frederick, Harford, Kent, and Worcester Counties.
    • Under § 13-902(c), a building or housing code generally does not apply to a building on a farm or premises devoted solely to agricultural uses, except that it applies in Calvert County to dwellings on which construction began after July 1, 1979 and in Frederick County to residential buildings or buildings constructed for human habitation regardless of location or auxiliary use.
    • Kent County must adopt a building code and housing code; Calvert, Caroline, Dorchester, Frederick, Harford, and Worcester Counties may adopt them.
    • A building code adopted under § 13-902 must require a building permit before a building is built or improved and include standards for structural safety, fire prevention, lighting, ventilation, and proper access.
    • Later amendments to codes incorporated by reference are not effective in Caroline, Frederick, Harford, Kent, and Worcester Counties until incorporated into the county code.
    • Separate county-specific provisions apply to Cecil, Charles, Queen Anne’s, and St. Mary’s Counties, including the Charles County exemption for farm buildings and other outbuildings costing less than $2,500.
    • The Maryland Building Performance Standards apply statewide to each building or structure for which a building permit application is received by a local jurisdiction on or after August 1, 1995.

    building permit before building is built or improved: true (Required in a building code adopted under Local Government Article § 13-902.) · Charles County farm-building or outbuilding cost exemption: < 2500 USD (The Charles County building code does not apply to farm buildings or other outbuildings costing less than $2,500.) · Maryland Building Performance Standards application date: >= 1995-08-01 (Applies to building permit applications received on or after this date.)

    “This section applies to all counties except: [...] The governing body of a county may: (1) regulate the construction of buildings and signs; (2) adopt a building code; (3) provide for enforcement of the code; (4) require permits for the construction of buildings and signs; (5) impose permit and inspection fees; (6) provide for inspection of buildings and structures;”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Tiny homes — Occupancy of a tiny home as a dwelling in Charles County, Maryland.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Water rights & wells in Charles County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Maryland’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellExempt — no permit or water right

Individual domestic use is exempt from the Maryland water appropriation permit (COMAR 26.17.06); a well-construction permit is still required, and non-domestic/large withdrawals (>10,000 gpd) need an appropriation permit.

Limit: individual domestic use exempt from appropriation permit

Maryland MDE — Water Appropriation Permits ↗
  • Coastal Plain Water Management Strategy Areaslocalized of county

    MDE delineates five Water Management Strategy Areas (Annapolis Neck, Kent Island, Indian Head, Waldorf, Ocean Pines) where declining heads or saltwater intrusion trigger heightened permit scrutiny; once an aquifer hits 80% of available drawdown no additional water-supply pumping is allowed. Individual domestic use is exempt.

    Maryland MDE — Water Management Strategy Areas ↗

Regulated-riparian state (large uses permitted). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Maryland state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Charles County, Maryland

Is Charles County a good place to live off-grid or homestead?

Charles County scores 51/100 on the Bolthole Index, a solid county profile. Its strengths: mixed durability signals and workable self-sufficiency basics: 43.9″/yr rainfall and 73.4% wooded land. Watch-outs: about 108,675 people within a 30-minute drive.

Do you need a building permit in Charles County, Maryland?

Charles County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Charles County Department of Health, Environmental Health Division (under Maryland Department of the Environment). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Charles County?

Living in an RV on your own land in Charles County is limited to specific cases: Occupancy of trailer coaches or recreational vehicles for dwelling or sleeping purposes in Charles County. Outside a duly licensed trailer park, occupancy is limited to no more than 10 days in any month unless written permission is obtained from the Board of County Commissioners following inspection and approval by the Charles County Sanitary District. Recreational vehicle parks are permitted with conditions in the CC and CV Zones and by special exception in the AC and RC Zones. Confirm with the county before relying on it.

How much does land cost in Charles County, Maryland?

Land in Charles County runs about $7,951 per acre, based on the latest county data.

What is the water situation in Charles County?

Charles County gets about 43.9" of rain a year, with severe drought in roughly 1.3% of years. On water rights, Charles County lies in the Coastal Plain Water Management Strategy Areas — MDE delineates five Water Management Strategy Areas (Annapolis Neck, Kent Island, Indian Head, Waldorf, Ocean Pines) where declining heads or saltwater intrusion trigger heightened permit scrutiny; once an aquifer hits 80% of available drawdown no additional water-supply pumping is allowed. Individual domestic use is exempt..

How remote is Charles County?

A representative private-land location has about 108,675 people within a 30-minute drive and 10,658,330 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Charles compares in Maryland

Compare side-by-side →See all 24 Maryland counties ranked →