Bolthole Index

Calvert County, Maryland

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

53Index Score / 100
#11 of 24 in Maryland

Calvert County, Maryland requires a building permit before covered construction starts, and the Division of Inspections and Permits issues the permit12. The county has adopted building codes and parcel-specific zoning, while Environmental Health Services administers septic permits and permits new individual wells3456.

At a glance

Building permit
Required before work starts for construction subject to the Calvert County Building Code1
Zoning
Yes - the applicable ordinance and residential setbacks depend on the parcel and district47
Septic
Calvert County Health Department Environmental Health Services issues septic permits5
Wells
Environmental Health Services permits new individual wells; only licensed well drillers may apply6
Owner-builder exemption
Yes, from the county's building-contractor license - a proper permit is still required8
Minimum lot size
District-specific: as low as 1 acre (clustered/RND) up to 25 acres in the Farm and Forest District910
Driveway/road access
County grading permit required for a driveway onto a county road; MDOT SHA permit required onto a state highway1112
Tiny home
A qualifying manufactured home is conditional in specified districts; other tiny-home classifications remain unconfirmed13

Who to call

Building permits

Calvert County Division of Inspections and Permits

Building, electrical, plumbing and grading permits, inspections and certificates of occupancy for unincorporated Calvert County

410-535-2155

inspections.permits@calvertcountymd.gov

County Administration Building, 3rd Floor, 150 Main Street, Prince Frederick, MD 20678

Online permits →

Zoning

Calvert County Department of Planning & Zoning

Zoning administration, the Planning Commission, Board of Appeals, subdivision review and the building code, including the Division of Inspections & Permits

410-535-2348

PZ@calvertcountymd.gov

County Administration Building, 3rd Floor, 150 Main St., Prince Frederick, MD 20678

Septic permits

Calvert County Health Department - Environmental Health Services

Septic (on-site sewage disposal) permits, site evaluations, subdivision review and septic-installer licensing for Calvert County

(410) 535-5400

975 Solomons Island Road North, PO Box 980, Prince Frederick, MD 20678

Well permits

Calvert County Health Department - Environmental Health Services (Well Water)

Well construction permits, site evaluations for new wells, replacement-well applications and potability certificates

(410) 535-5400

975 Solomons Island Road North, PO Box 980, Prince Frederick, MD 20678

Roads & driveways

Calvert County Department of Public Works

Grading permits for driveway entrances connecting to county roads

410-535-2204

public.works@calvertcountymd.gov

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 Calvert County means bringing your own water and power. The kit we’d start with:

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

Yes. Construction work in unincorporated Calvert County that is subject to the Calvert County Building Code needs a permit approved, paid for and issued before work starts1. Calvert County adopted the International Building Code and International Residential Code as its building code, with local amendments3. Calvert County publishes permit-fee schedules, but the amount varies with permit type, floor area, inspection count and project details; the worksheet is only an estimate, so obtain the official amount from a Permit Coordinator14. Calvert County exempts owners building their own dwelling on their own property from the county building-contractor license, but proper building permits remain required; ask Inspections and Permits whether Maryland home-builder registration applies to your project8. Inside North Beach, covered work requires a town building permit, and new construction also requires a county building permit15. Septic systems inside North Beach remain under Calvert County Health Department Environmental Health Services16.

Who is the Calvert County building department, and how do you reach them?

The Calvert County Division of Inspections and Permits issues building, grading, electrical, plumbing and gas permits and performs field inspections2. The division sits within the Department of Planning & Zoning, which administers the zoning ordinance, subdivision regulations and building code17. Applications may be submitted through the Encompass portal, in person, by drop box or by mail; incomplete or inaccurate applications are rejected18. Calvert County residential inspections generally require at least 24 hours' notice; requests after 3:00 p.m. may miss the following day19. Required stages include checks before concrete, backfill, insulation and wall covering, and at completion; foundation location surveys must be approved before a framing inspection19. Plumbing and electrical work need separate permits and inspections, and concealed work may have to be exposed19.

Does Calvert County have zoning?

Calvert County zoning rules apply to unincorporated land and depend on the parcel and district134. Calvert County's current Zoning Ordinance took effect March 1, 2025, and separate materials are listed for the Dunkirk, Huntingtown, Lusby, Owings, Prince Frederick, Solomons and St. Leonard areas204. Minimum lot area for a single-family home ranges from 1 acre to 25 acres by district and development pattern91021. FFD and RD detached homes have front setbacks of 100 feet from listed Maryland routes, 25 feet from interior subdivision roads and 60 feet from other roads, plus 10-foot side and 35-foot rear setbacks2223. RCD and RND use those same distances, while WCD uses 25-foot front, 6-foot side and 20-foot rear setbacks; roadway-buffer rules may modify them24. Chesapeake Beach and North Beach administer their own zoning; septic systems remain with Calvert County Health Department Environmental Health Services25265. We could not confirm a minimum dwelling size or building-height limit; ask Planning & Zoning about the parcel17.

How do septic and well permits work in Calvert County?

Calvert County Health Department Environmental Health Services administers the local septic process under authority delegated by the Maryland Department of the Environment5. A Sanitary Construction Permit is required for on-site sewage disposal installations and must be obtained by a Calvert County licensed septic installer27. No part of a system can be covered or used until it is inspected and approved, and a Calvert County plumbing inspector must check the sewer line within 5 feet of the house before covering28. Alternative systems that distribute treated effluent to soil may be permitted, but they require design by a qualified third-party soil consultant, state co-review and a recorded agreement before the permit application; this does not confirm that composting toilets or other non-OSDS sanitation methods are allowed29. The county's soil data rates 0% of its soils as free of severe limits for a conventional drain field, so make the site evaluation an early contingency30. Environmental Health also evaluates sites and issues permits for new individual wells, and only licensed well drillers may apply6.

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

We could not confirm permission for long-term RV living on private land in unincorporated Calvert County; ask Planning & Zoning before planning to live in an RV while building17. Calvert County does allow one recreational vehicle or manufactured home as temporary shelter when a residence is made unlivable by a fire or other disaster not intentionally caused by the owner, but a Zoning Officer permit is required and an extension is needed beyond 6 months31. One manufactured home may occupy a buildable lot where that use is permitted with conditions, provided the unit has a permanent continuous foundation, pitched roof, wood-or-masonry appearance and current HUD-standard construction32. A tiny home can use that path only if it qualifies as a manufactured home, and building-permit and well or septic review also apply13. Ask Planning & Zoning how a site-built or modular tiny home is classified17. Farm campgrounds are separate: on a qualifying farm of at least 20 acres, only tents are allowed, while RVs and travel trailers are prohibited33.

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

  1. Call the Department of Planning & Zoning to confirm the zoning district, minimum lot area, and setbacks that apply to the parcel17.
  2. If the lot isn't on public sewer, contact Environmental Health Services for a septic site evaluation before you finalize house plans - the soil ratings flag severe limits for conventional drain fields3430.
  3. If the lot needs a well, have a licensed well driller apply to Environmental Health Services for the required new-well permit6.
  4. Submit a complete building-permit application to the Division of Inspections and Permits through Encompass, in person, by drop box or by mail; wait until the building permit is issued before applying for electrical or plumbing permits18.
  5. If the driveway will connect to a county road, get a grading permit from the Department of Public Works; if it connects to a state highway, get an access permit from MDOT's State Highway Administration first3512.
  6. Schedule required inspections in sequence, giving at least 24 hours' notice and requesting by 3:00 p.m. for possible next-business-day scheduling19.
  7. Do not occupy the new home until all building, grading, electrical and plumbing finals are approved and the Division of Inspections and Permits has issued the Certificate of Occupancy36.

What should you check before buying land in Calvert County?

Check whether the parcel sits in a Special Flood Hazard Area before you buy - all development there needs a permit, and a new structure or a major improvement can trigger extra documentation37. If the parcel is near the Chesapeake Bay shoreline, check whether it falls in the Critical Area, where lot coverage is generally capped at 15%38. On a larger tract, note that Calvert's subdivision rules only allow major subdivisions on individual septic systems in Tier III growth areas, while Tier IV areas are limited to minor subdivisions39. Clearing or grading a tract of 40,000 square feet or more can trigger forest-conservation requirements, though several project types can qualify for an exemption40. The nearest city of 100,000 or more people is about 33 miles from the county center, and the typical property-tax bill runs about $3,858 a year at an effective rate near 0.9%414243.

Watch-outs

  • Calvert County's Zoning Ordinance was substantially rewritten effective March 1, 2025; anything you read about RV occupancy, tiny homes, minimum dwelling size or building height from before that date may be out of date - confirm current rules with the Department of Planning & Zoning1720.
  • Calvert County allows one attached or detached accessory dwelling with a single-family home where the use is permitted with conditions; size, owner-occupancy, access and Critical Area rules apply44.

Sources

  1. Inspections and Permits, quoted and re-checked
  2. Calvert County Division of Inspections and Permits (calvertcountymd.gov)
  3. Building Code Adoption, quoted and re-checked
  4. calvertcountymd.gov, quoted and re-checked
  5. Guidelines for the Installation and Inspection of On-site Sewage Disposal Systems, quoted and re-checked
  6. Well Water, quoted and re-checked
  7. Article 4: Agricultural Districts - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  8. Building Contractor's License, quoted and re-checked
  9. Article 4: Agricultural Districts - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  10. Article 5: Rural Residential Districts - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  11. Calvert County Road and Site Development Ordinance, quoted and re-checked
  12. Access Management/Permits - MDOT SHA (Maryland statewide rule), quoted and re-checked
  13. Calvert County Zoning Ordinance — September 2025 Update, quoted and re-checked
  14. Inspections & Permits Fees FY2026, quoted and re-checked
  15. Town of North Beach: Chapter 49: Construction Standards (Calvert County), quoted and re-checked
  16. Town of North Beach: Septic Systems (Calvert County), quoted and re-checked
  17. Calvert County Department of Planning & Zoning (calvertcountymd.gov)
  18. Inspections and Permits | Calvert County, MD - Official Website, quoted and re-checked
  19. Application for Residential Building Permit, quoted and re-checked
  20. Zoning Ordinance Update, quoted and re-checked
  21. Article 6: Residential Districts - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  22. ecode360.com, quoted and re-checked
  23. Article 6 Residential Districts, Calvert County Zoning Ordinance, quoted and re-checked
  24. Article 5 Rural Residential Districts, Calvert County Zoning Ordinance, quoted and re-checked
  25. Town of Chesapeake Beach: Chapter 290: Zoning - Town of Chesapeake Beach, MD (Calvert County), quoted and re-checked
  26. Town of North Beach: Guidelines & Approval Process for Zoning Permits (Calvert County), quoted and re-checked
  27. Guidelines for the Installation and Inspection of On-site Sewage Disposal Systems, quoted and re-checked
  28. Guidelines for the Installation and Inspection of On-site Sewage Disposal Systems, quoted and re-checked
  29. Guidelines for the Installation and Inspection of On-site Sewage Disposal Systems, quoted and re-checked
  30. 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
  31. Article 18: Uses, Calvert County Zoning Ordinance, quoted and re-checked
  32. Article 18: Uses - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  33. Article 18: Uses, Calvert County Zoning Ordinance, quoted and re-checked
  34. Calvert County Health Department - Environmental Health Services (calverthealth.org)
  35. Calvert County Department of Public Works (calvertcountymd.gov)
  36. Inspections and Permits, quoted and re-checked
  37. Floodplain Management, quoted and re-checked
  38. Article 22: Critical Area - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  39. Article 31: Subdivision - Zoning Ordinance, Calvert County, MD, quoted and re-checked
  40. Forest Conservation, quoted and re-checked
  41. Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
  42. Median property tax bill: Bolthole Index county data
  43. Effective property tax rate: Bolthole Index county data
  44. Article 18: Uses - Zoning Ordinance, Calvert County, MD, quoted and re-checked

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.

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Compared with neighboring counties

Like all 6 of its neighbors, Calvert County has countywide zoning.

RuleCalvert CountySt. Mary's CountyCharles CountyPrince George's CountyTalbot CountyAnne Arundel CountyDorchester County
Building permitRequiredRequiredLimitedRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Health Dept.County Health Dept.County Dept. of HealthCounty Health Dept.County Health Dept.County Dept. of HealthCounty Health Dept.

County locator

Calvert County in Maryland

53
County map
Calvert County highlighted among the Maryland counties · colored by Index score

How Calvert County scores

Seclusion25100% ev.
Self-Sufficiency68100% ev.
Admin Boringness42100% ev.
Durability83100% ev.
Property Autonomy43100% ev.
Carry Cost45100% 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 →

$491kTypical home
0.9%Property tax
$11,544Land / acre
45.7"Annual rain
2.1% of yrsSevere drought
4.3 / yr (+4.1)Mid-century 100°F days
13.4 daysMid-century dry spell
2.2" (+7%)Mid-century 1-day rain
1.44×Wildfire change factor
100%Forward climate coverage
$1,856Home insurance / yr
3.4% / yrInsurance growth
0.28%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
108,680People within 30 min
9,212,066People within 2 hr
157,662Radius comparison (15 mi)
444.3People / sq mi
1.2%Federal land
61.8%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
66.6%Wooded land
107.1 tonsBiomass / forest ac
57°FAvg temp

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Cities and towns in Calvert 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.

Answers from the rulebook for Calvert County

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

Calvert County rules

  • Building permitRequired

    Building work requiring a Calvert County building permit, including residential construction in county-administered areas

    • Permits must be applied for and obtained before starting work.
    • Permits are not valid until an inspector approves the application, payment is received, and the permit is issued.
    • Properties within the Town of North Beach or Chesapeake Beach may have additional municipal requirements before application submittal to Calvert County Inspections & Permits.
    “Permits MUST be applied for and obtained PRIOR to starting work.”
  • Owner-builder exemptionAvailable (with conditions)

    A property owner constructing the owner's own dwelling on the owner's own property in Calvert County.

    • The property owner must construct the owner's own dwelling on the owner's own property.
    • Proper permits are required.
    • The builder must also be licensed and registered as a Maryland Home Builder; a license number is required before a permit application will be accepted.
    • MHIC licenses are required for home improvement contractors.

    Maryland Home Builder requirement date: 2001-01-01

    “Property owners may construct their own dwelling on their own property without a license (with proper permits).”
    One more reviewed finding on this topic
    • Available (with conditions) — A property owner constructing the owner's own dwelling on the owner's own property in Calvert County.
      “Property owners may construct their own dwelling on their own property without a license (with proper permits).”
  • Building code adoptedAdopted (with conditions)

    Commercial and residential building construction, repair, and demolition regulated by the Calvert County Building Code.

    • The Calvert County Board of County Commissioners adopted the 2018 International Building Code and 2018 International Residential Code.
    • The adoption became effective July 1, 2022.
    • The county code establishes application and permit-issuance requirements, application and permit time limits, notices of violations, and violation penalties.
    • The county Code Requirements page identifies local amendments to the IBC/IRC and states that fire codes and life-safety codes are administered by the Office of the State Fire Marshal.

    adopted commercial building standard: 2018 International Building Code · adopted residential building standard: 2018 International Residential Code · effective date: 2022-07-01 · local amendments copy fee: 5 USD (Local Amendments to IBC/IRC)

    “The BOCC voted to adopt the IBC and the IRC as the Calvert County Building Code, effective July 1, 2022.”
  • InspectionsRequired

    Residential building construction subject to a Calvert County building permit

    • After issuance of a building permit, inspections must be requested at least 24 hours in advance.
    • Inspections must be requested by 3:00 p.m. to be scheduled for the following day; delays may occur.
    • Required inspections include, but are not limited to, inspections before footings or slabs are poured, before foundation walls are backfilled, before framed walls are insulated, before interior and exterior walls are covered, and upon completion of construction.
    • Separate permits and inspections are required for plumbing and electrical work.
    • Work covered or concealed before a required inspection may have to be exposed.
    • Grading inspections are performed by the Department of Public Works, Project Management Division.

    inspection request lead time: >= 24 hours · inspection scheduling request deadline: 3:00 p.m. (Requests after 3:00 p.m. may not be scheduled for the following business day)

    “Required inspections shall include, but are not limited to: (1) before footings or slabs are poured”
    One more reviewed finding on this topic
    • Required — Residential building construction after issuance of a building permit in Calvert County.
      “Required inspections shall include, but are not limited to: (1) before footings or slabs are poured (2) before foundation walls are backfilled (Foundation Location Surveys must be submitted and approved prior to calling for a framing inspection) (3) before framed walls are insulated (Certifications are required for engineered floor and roof system) (4) before interior walls are covered, and (5) upon completion of construction. Depending on construction methods and sequence, additional inspections may be required.”
  • Certificate of occupancyRequired

    A new single-family dwelling in Calvert County

    • All building, grading, electrical, and plumbing final inspections must be completed and approved before occupancy.
    • The Certificate of Occupancy permit must be issued by the Division of Inspections and Permits before the dwelling is occupied.
    “a Certificate of Occupancy permit is issued by the Division of Inspections and Permits.”
    One more reviewed finding on this topic
    • Required — A new single-family dwelling in Calvert County.
      “A new single-family dwelling shall not be occupied until all building, grading, electrical and plumbing final inspections are completed and approved AND a Certificate of Occupancy permit is issued by the Division of Inspections and Permits.”
  • County-wide zoningPresent (with conditions)

    Countywide land-use zoning administered under the Calvert County Zoning Ordinance.

    • The ordinance became effective March 1, 2025.
    • The ordinance was approved by the Calvert County Board of County Commissioners at a public hearing on February 18, 2025.
    • The ordinance regulates land uses and is administered, enforced, and amended under authority described on the county page.
    “The Zoning Ordinance is designed to regulate land uses, many aspects of land use can impact adjoining properties, neighborhoods, public facilities and overall County development.”
  • Local zoningVaries (with conditions)

    Aggregate local zoning controls across Calvert County, including county zoning and separately identified town-center or community zoning ordinances.

    • The county page separately lists zoning ordinances for Dunkirk, Huntingtown, Lusby, Owings, Prince Frederick, Solomons, and St. Leonard.
    • The applicable ordinance may depend on the specific town center, community, or parcel.
    • This aggregate claim does not assert that Calvert County administers each separately listed local ordinance.
    “Dunkirk Master Plan & Zoning Ordinance [...] Huntingtown Master Plan & Zoning Ordinance [...] Lusby Master Plan & Zoning Ordinance”
  • Zoning districtsPublished (with conditions)

    Published zoning districts and zoning information for county-regulated areas; incorporated Chesapeake Beach and North Beach are separately governed and excluded from the county GIS zoning dataset.

    • The county zoning GIS dataset states that it went into effect March 1, 2025.
    • Chesapeake Beach and North Beach are not included in the county zoning dataset and have separate governments and zoning regulations.
    • Right-of-way polygons in the GIS layer are not zoning districts.
    • The county zoning page provides links to the zoning ordinance, zoning map, town-center plans, GIS zoning map, and zoning-verification process.
    “This dataset shows the delineation of Zoning Districts in Calvert County, MD. This zoning dataset went into effect March 1, 2025. The municipalities of Chesapeake Beach and North Beach are not included in the zoning dataset. There are some polygons that are assigned a right-of-way (ROW) classification, but ROW is not a zoning district.”
  • Minimum lot sizeDistrict specific (with conditions)

    Single-family detached residential lots in the Rural Community District, Rural Neighborhood District, and Waterfront Community District.

    • RCD minimum lot area is 3 acres in a non-cluster subdivision and 1 acre in a clustered subdivision.
    • RND minimum lot area is 1 acre.
    • WCD minimum lot area is not specified (N/A).
    • The minimum lot area shall not be less than that required to satisfy all requirements of the Health Department.
    • Front roadway buffer requirements of Section 25-2.B.4 may modify these requirements.
    • Transfer Zone Density requires purchase of Transferable Development Rights.

    RCD minimum lot area, non-clustered subdivision: 3 acres · RCD minimum lot area, clustered subdivision: 1 acre · RND minimum lot area: 1 acre

    “Minimum Lot Area[2] | 3 acres in non-cluster subdivision 1 acre in clustered subdivision | 1 acre | N/A [...] [2] | Minimum lot area shall not be less than that required to satisfy all requirements of the Health Department. [3] | Front roadway buffer requirements of Section 25-2.B.4 apply and may modify these requirements.”
    2 more reviewed findings on this topic
    • District specific (with conditions) — Single-family detached residential lots in the Farm and Forest District (FFD).
      “Minimum Lot Area[1] | 25 acres in non-clustered subdivision 1 acre in clustered subdivision [...] [1] | Minimum lot area shall not be less than that required to satisfy all requirements of the Health Department. [2] | Front roadway buffer requirements of Section 25-2.B.4 apply and may modify these requirements.”
    • District specific (with conditions) — Single-family detached residential lots in the Residential District (RD).
      “Minimum Lot Area[2] | 10,000 sf with sewer 1 acre without sewer [...] [2] | Minimum lot area shall not be less than that required to satisfy all requirements of the Health Department. [3] | Front roadway buffer requirements of Section 25-2.B.4 apply and may modify these requirements.”
  • SetbacksDistrict specific (with conditions)

    Single-family detached residential setbacks in Calvert County's FFD, RCD, RND, WCD, and RD zoning districts.

    • For FFD, RCD, RND, and RD, front setbacks are 100 feet from specified Maryland routes, 25 feet from interior subdivision roads, and 60 feet from all other roads.
    • For WCD, front setbacks are 25 feet from all listed road categories.
    • Side and rear setbacks vary by district as stated in the parameters.
    • Front roadway buffer requirements of Section 25-2.B.4 may modify the listed requirements.

    FFD front setback from MD 2, 4, 2/4, 260, 261, 263, 231: 100 feet · FFD front setback from interior subdivision roads: 25 feet · FFD front setback from all other roads: 60 feet · FFD side setback: 10 feet · FFD rear setback: 35 feet · RCD/RND front setback from listed Maryland routes: 100 feet · RCD/RND front setback from interior subdivision roads: 25 feet · RCD/RND front setback from all other roads: 60 feet · RCD/RND side setback: 10 feet · RCD/RND rear setback: 35 feet · WCD front setback: 25 feet · WCD side setback: 6 feet · WCD rear setback: 20 feet · RD front setback from listed Maryland routes: 100 feet · RD front setback from interior subdivision roads: 25 feet · RD front setback from all other roads: 60 feet · RD side setback: 10 feet · RD rear setback: 35 feet

    “Front Setback: MD 2, 4, 2/4, 260, 261, 263, 231 | 100' | 100' | 25' Front Setback: Interior Subdivision Roads | 25' | 25' | 25' Front Setback: All Other Roads | 60' | 60' | 25' Side Setback | 10' | 10' | 6' Rear Setback | 35' | 35' | 20'”
    3 more reviewed findings on this topic
    • Specified — Single-family detached residential development in the FFD.
      “Front Setback: MD 2, 4, 2/4, 260, 261, 263, 231 | 100' Front Setback: Interior Subdivision Roads | 25' Front Setback: All Other Roads | 60' Side Setback | 10' Rear Setback | 35'”
    • District specific (with conditions) — Single-family detached residential development in the RCD, RND, and WCD districts.
      “Front Setback: MD 2, 4, 2/4, 260, 261, 263, 231 | 100' | 100' | 25' Front Setback: Interior Subdivision Roads | 25' | 25' | 25' Front Setback: All Other Roads | 60' | 60' | 25' Side Setback | 10' | 10' | 6' Rear Setback | 35' | 35' | 20'”
    • Specified — Single-family detached residential development in the RD.
      “Front Setback: MD 2, 4, 2/4, 260, 261, 263, 231 | 100' Front Setback: Interior Subdivision Roads | 25' Front Setback: All Other Roads | 60' Side Setback | 10' Rear Setback | 35'”
  • Lot coverageDistrict specific (with conditions)

    Lots and parcels within the Chesapeake Bay Critical Area and other Critical Area classifications governed by Article 22.

    • In general, lot coverage is limited to 15% of a lot or parcel.
    • A parcel or lot existing on or before December 1, 1985 in the Chesapeake Bay Critical Area and one-half acre or less is limited to 25%.
    • For lots one acre or less, coverage is measured across the entire parcel being subdivided, and individual lots may exceed 15% if the entire parcel does not exceed 15%.
    • Lot coverage limits do not apply to a manufactured home community in residential use on or before December 1, 1985 in the Critical Area.
    • There is no allowable by-right percentage of lot coverage within the 100-foot buffer; exceptions require applicable regulatory authorization.
    • Additions or alterations require a grading exception, grading permit, or building permit, subject to stated pervious-material and grandfathering provisions.

    general lot coverage limit: 15 percent of lot or parcel · pre-December 1, 1985 lot or parcel one-half acre or less: 25 percent (Chesapeake Bay Critical Area)

    “In general, lot coverage is limited to 15% of a lot or parcel. [...] If a parcel or lot existed on or before December 1, 1985 in the Chesapeake Bay Critical Area and is one-half acre or less in size, then the lot coverage is limited to 25% of the lot or parcel.”
  • Living in an RVTemporary only (with conditions)

    One recreational vehicle used as a temporary shelter on the premises of a residence whose livability was destroyed by an owner-unintentional fire or other disaster.

    • The residence must have been rendered unlivable by fire or another disaster.
    • The disaster must not have been intentionally caused by the owner.
    • A permit from the Zoning Officer is required.
    • The permit is for one manufactured home or recreational vehicle.
    • The use is temporary; if it exceeds six months, the Zoning Officer may approve an extension.

    maximum initial temporary-use period: <= 6 months (The Zoning Officer may approve an extension if the temporary use exceeds six months.) · number of manufactured homes or recreational vehicles: 1 vehicle or home

    “In case of fire or other disaster that was not intentionally caused by the owner and that destroys the livability of a residence, the Zoning Officer may issue a permit for one manufactured home or recreational vehicle to serve as a temporary shelter on the premises. If such temporary use exceeds six months, the Zoning Officer may approve an extension of such timeframe.”
  • Camping on your landLimited

    Tent camping on a farm property in districts where the Article 18 use table permits Campground, Farm by the applicable conditional or special-exception designation.

    • The property must be a farm property of at least 20 acres.
    • No more than 10 designated campsites are permitted.
    • No more than six people are permitted per campsite.
    • Campsites must be at least 300 feet from adjoining properties and roads.
    • Only tent camping is permitted; recreational vehicles and travel trailers are prohibited.
    • No permanent structures are permitted except tent platforms and cooking grills.
    • Temporary restrooms and potable water must be provided within 75 feet of the campsites.
    • Shower/bath facilities, electricity, and telephone lines are prohibited in conjunction with the campground.
    • If there is no direct access to a public road, an administrative variance is required unless the Department of Planning & Zoning determines that there are no affected property owners.

    minimum farm-property size: >= 20 acres · maximum designated campsites: <= 10 campsites · maximum people per campsite: <= 6 people · minimum campsite setback from adjoining properties and roads: >= 300 feet · maximum distance to temporary restrooms and potable water: <= 75 feet

    “Only tent camping is permitted (recreational vehicles and travel trailers are prohibited); and”
  • Tiny homesLimited

    Occupancy of a tiny home that qualifies under the Calvert County Zoning Ordinance as a manufactured home on an individual lot or parcel, in areas governed by the county ordinance.

    • The county zoning ordinance applies within Calvert County except the incorporated territory of any municipality.
    • The outside-Town-Center use table identifies Manufactured Home on Individual Lot or Parcel as C (Permitted with Conditions) in the HD, APD, FFD, RCD, RND, WCD, and RD columns; the cited table does not establish authorization in the other listed districts.
    • One manufactured home is permitted per buildable lot or parcel.
    • The unit must have a permanent and continuous foundation.
    • The unit must have a pitched roof.
    • The exterior walls must have the appearance of wood or masonry, regardless of actual composition.
    • The unit must be constructed to the latest HUD standards at the time of installation.
    • Mobile-home construction requires a building permit, and properties served by well or septic require Environmental Health Department review.
    • The ordinance does not define the term tiny home; this claim applies only if the proposed tiny home fits the ordinance's manufactured-home category.
    “Manufactured Home on Individual Lot or Parcel C C C C C C C Sec. 18-5.N [...] One manufactured home is permitted per buildable lot or parcel; and 2. The unit shall have a permanent and continuous foundation; and 3. The unit has a pitched roof; and 4. The exterior walls of the unit shall have the appearance of wood or masonry, regardless of their actual composition; and 5. The unit is constructed to the latest HUD standards at the time of installation on the lot or parcel.”
  • Manufactured homesLimited

    A manufactured home located on an individual lot or parcel in a zoning district where the use is listed as permitted with conditions.

    • Only one manufactured home is permitted per buildable lot or parcel.
    • The unit must have a permanent and continuous foundation.
    • The unit must have a pitched roof.
    • The exterior walls must have the appearance of wood or masonry, regardless of actual composition.
    • The unit must be constructed to the latest HUD standards at the time of installation on the lot or parcel.

    manufactured homes per buildable lot or parcel: 1 home

    “One manufactured home is permitted per buildable lot or parcel; and”
  • Accessory dwellingsLimited

    An accessory dwelling attached to or detached from a single-family detached dwelling on the same lot or parcel in a zoning district where the use is listed as permitted with conditions.

    • Only one accessory dwelling, attached or detached, is permitted on a lot or parcel with a single-family dwelling.
    • The accessory dwelling must be no greater than 75% of the gross floor area of and clearly subordinate to the single-family dwelling.
    • A detached accessory dwelling cannot exceed 1,500 square feet of enclosed gross floor area, including enclosed porches.
    • An attached accessory dwelling is limited to no more than 40% of the total gross floor area of the building unless located within the basement; if located in the basement, it may consist of the entire basement.
    • An owner of the lot or parcel must occupy at least one dwelling unit on the premises except for temporary absences determined by the Zoning Officer.
    • The accessory dwelling must have adequate vehicular access as determined by the Department of Public Works.
    • Only one kitchen is permitted within the accessory dwelling.
    • If located in the Critical Area, the provisions for accessory apartments in Article 22 apply.

    accessory dwellings per lot or parcel with a single-family dwelling: 1 dwelling · maximum accessory-dwelling gross floor area relative to single-family dwelling: <= 75 percent (must also be clearly subordinate) · maximum detached accessory-dwelling enclosed gross floor area: <= 1500 square feet (including enclosed porches) · maximum attached accessory-dwelling gross floor area: <= 40 percent (does not apply in the basement, where the accessory dwelling may consist of the entire basement)

    “Only one accessory dwelling, either attached or detached, is permitted on a lot or parcel with a single-family dwelling; and”
  • Who permits septicCounty

    On-site sewage disposal systems in Calvert County.

    • The County Health Department Division of Environmental Health administers the local process.
    • The guidelines state that Maryland Department of the Environment regulations are enforced by Environmental Health through delegated authority by MDE.
    “The following information is adopted in these guidelines directly from the Calvert County Code of Ordinances Chapter 110 Article II which addresses licensing of septic installers in Calvert County. Septic contractor/installer’s license 1. Sewage Disposal Installers. a. No person shall construct, remodel, or repair any individual sewage disposal system except under the supervision of a sewage disposal installer in possession of a valid license issued by the Health Officer for that purpose.”
  • Septic permitRequired

    All installations of on-site sewage disposal systems in Calvert County.

    • The permit must be obtained by a Calvert County licensed septic installer.
    • A Sanitary Construction Permit must be issued before installation of any OSDS.
    • For replacement systems, a Site Evaluation application and fee must first be submitted; a separate Sanitary Construction Permit application and fee follows a satisfactory site evaluation.
    • Minor repairs of existing systems are exempt from permitting, including adding tank risers, replacing blocked or crushed pipe sections totaling 10 feet or less, replacing a distribution box, and sealing existing tank risers; the work must be conducted by a licensed septic installer.
    • Permits and approved plans are valid for 2 years after issuance.

    permit validity: 2 years (after permits are issued)

    “all installations of on-site sewage disposal systems in Calvert County.”
  • Septic inspectionRequired

    Installation of on-site sewage disposal systems in Calvert County.

    • No part of an OSDS may be covered or used until inspected and approved by the Approving Authority or an approved third party.
    • All work must be completed and left uncovered before inspection by a Licensed Environmental Health Specialist.
    • Inspection requests must be emailed to Environmental Health clerical staff no later than 9:30 a.m. on the requested inspection day.
    • A Calvert County plumbing inspector must inspect the sewer line within 5 feet of the dwelling before covering.
    • Pump systems require a pump test; BAT systems require a BAT test and manufacturer representative startup.
    • Re-inspection fees apply when installation deficiencies require remedy and re-inspection, including covering system components before inspection.

    inspection request deadline: 9:30 a.m. (on the day inspection is requested)

    “completed and left uncovered prior to inspection”
  • Off-grid sanitationLimited

    Alternative onsite sewage disposal systems serving property without connection to public sewer, where the proposed system distributes treated effluent to soil.

    • The County Health Department may permit alternative systems, but will not permit one if it believes the system threatens public health or the environment.
    • Alternative systems must be designed by a third-party qualified soil consultant and submitted for co-review with MDE.
    • An Innovative and Alternative Agreement must be signed by the property owner, MDE, and Environmental Health Director and recorded with Land Records before a Sanitary Construction Application may be submitted.
    • A licensed septic installer must submit the system for permitting.
    • This source does not establish authorization for composting toilets or other sanitation methods outside permitted OSDS.
    “Alternative systems could be an adaptation of a conventional system design or an entirely different way of distributing treated effluent to the soil. The Calvert County Health Department will not permit the installation of an alternative system if we believe that it presents a threat to public health or the environment. Some types of alternative systems that may be permitted by EH would be modified or marginal sand mound systems, alternative trench systems with low pressure distribution, absorption beds, bottomless sand filters and drip dispersal systems. Alternative systems must be designed by a third-party qualified soil consultant and a proposal submitted for co-review with MDE.”
  • Well permitRequired

    New individual water wells in Calvert County.

    • Calvert County Environmental Health issues well permits and conducts site evaluations for new wells.
    • Applications for well construction permits are accepted only from licensed well drillers.
    • A potability certificate is also part of the County Environmental Health program.
    “Site evaluations for new wells and issue well permits”
  • Agricultural exemptionConditional

    Agricultural-use development activities seeking exemption from Calvert County forest-conservation requirements.

    • The Forest Conservation Act and Article 20 apply to covered applications on units of land or areas 40,000 square feet or greater.
    • Several development projects may be exempt, but the source does not state that all agricultural activity is exempt.
    • Some exemptions require a Declaration of Intent to be filed at the end stage of the project.
    • The county provides a Declaration of Intent—Agricultural Use Activity form and a Forest Conservation Exemption Request.

    forest-conservation applicability threshold: >= 40000 square feet (units of land or areas subject to subdivision, site plan, project plan, grading permit, sediment control, or vegetation removal approval)

    “Several types of development projects may be exempt from meeting the requirements for forest conservation. [...] Some exemptions require that a Declaration of Intent be filed at the end stage of the project. Declaration of Intent-Agricultural Use Activity (ENV-2-DOI-D02)”
  • Subdividing landRegulated (with conditions)

    New subdivisions and extensions or revisions of recorded subdivisions in unincorporated Calvert County, excluding incorporated towns.

    • The regulations do not apply to division of land for purposes other than building development, including agricultural land preservation; portions not used for building development; court-ordered subdivisions; or conveyances to governmental or quasi-governmental agencies for public use.
    • Final subdivision plat approval is required before issuance of building permits.
    • In Tier IV areas, only minor subdivisions are permitted; major subdivisions on individual onsite septic systems are permitted only in Tier III areas and require Planning Commission review and approval.
    • The subdivision article was amended September 30, 2025; no effective date for that amendment was stated in the opened source.

    major subdivision threshold: >= 8 new residential lots or other divisions from a parcel of record (as of October 1, 2012) · minor subdivision threshold: <= 7 residential lots or other divisions from a parcel of record (as of October 1, 2012) · minimum bond or guarantee: 125 percent of estimated completion cost (when bonded with the Department of Planning & Zoning)

    “Under the authority of the Land Use Article of the Maryland Annotated Code, the following regulations governing the subdivision of land are hereby established for all areas of Calvert County except those within Incorporated Towns of the County. [...] These regulations apply to all new subdivisions and to extensions and revisions of recorded subdivisions, except for:”
  • Driveway accessRequired

    Commercial, industrial, and residential driveway entrance connections to county roads.

    • A county grading permit is required for driveway entrance construction connecting to county roads.
    • Bonding is required for commercial and industrial entrance construction in the amount of 125% of the approved materials and construction cost estimate.
    • Bonding for residential driveway entrance construction may be required in circumstances deemed necessary by the Director.
    • Driveway entrances onto a state right-of-way require a state highway access permit from MSHA before final approval of the county grading permit.

    commercial and industrial entrance surety: 125 percent of approved materials and construction cost estimate

    “Commercial, industrial, and residential driveway entrance construction grading permits shall be required for all commercial, industrial, and residential driveway entrance connections to county roads.”
  • Building in a floodplainRequired

    All development within Calvert County Special Flood Hazard Areas, including new structures and improvements exceeding 50% of fair market value.

    • The permit requirement applies within Special Flood Hazard Areas (SFHAs), including Zones A, AE, AH, AO, AR, A99, V, and VE.
    • Additional documents may be required for a new structure or an improvement greater than 50% of fair market value.
    • The county identifies floodplain regulations in Section 24 of the Calvert County Zoning Ordinance.
    • The county page states that older versions of FEMA Form FF-206-FY-22-152 are not accepted.

    improvement threshold for listed additional documents: > 50 percent of fair market value

    “All development in a SFHA requires a permit. Additional documents may be required if you’re building a new structure or improving your existing structure greater than 50% of its fair market value:”
  • Permit feesPublished (with conditions)

    County Inspections and Permits and related Planning and Zoning fee schedules for county-administered permits.

    • The FY2026 fee package is effective July 1, 2025.
    • The worksheet calculates an estimate only and is not a guaranteed total; applicants must contact a Permit Coordinator for the official amount.
    • Fees vary by permit type, floor area, inspection count, and other project characteristics.

    residential application fee: 25 USD · residential finished floor permit fee: 0.12 USD/sq ft · residential unfinished floor permit fee: 0.06 USD/sq ft · commercial new construction permit: 450 USD (up to 10 inspections)

    “To estimate your fees, mark in the "Appl(icant)" column to confirm which documents you have submitted. The fees to be included for that item are noted in the columns to the right.”
  • Permit processPublished (with conditions)

    County-administered building, grading, electrical, plumbing, and gas permit applications and inspections in Calvert County; properties within the Town of North Beach or Chesapeake Beach require checking the municipality's website for additional information before submitting to Calvert County Inspections & Permits.

    • Permits must be applied for and obtained before starting work.
    • Permits are not valid until an inspector approves the application, payment is received, and the permit is issued.
    • Incomplete or inaccurate applications will be rejected.
    • Building permits for projects must be approved, paid for, and issued before electrical and plumbing permit applications are submitted.
    • Applications may be submitted online through the Encompass portal, in person, by drop box, or by mail.
    • In-person and drop-box submissions are listed as available Monday through Friday, 8 a.m. to 4 p.m.; the I&P office is closed for staff development from 8 to 10 a.m. on the first and third Thursday of each month.
    • Inspections must be requested online or by telephone and before 3 p.m. to be scheduled for the following business day.
    • For properties within the Town of North Beach or Chesapeake Beach, the county directs applicants to check the municipality's website for additional information before application submission.
    “Incomplete or inaccurate applications will be rejected [...] Permits are NOT valid until an inspector has approved the application, payment has been received, and the permit issued. Permits MUST be applied for and obtained PRIOR to starting work.”

Maryland rules that apply here

  • 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.”
  • 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.

  • Minimum dwelling size — A countywide minimum total floor area for a dwelling in the unincorporated territory of Calvert County.
  • Building height — Building-height requirements in Calvert County zoning districts.
  • Short-term rentals — Short-term rental use in Calvert County, including county-regulated areas outside incorporated municipalities and town centers.

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.

Living off-grid in Calvert County, Maryland

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

Calvert County scores 53/100 on the Bolthole Index, a solid county profile. Its strengths: mixed durability signals and strong self-sufficiency basics: 45.7″/yr rainfall plus 66.6% wooded land. Watch-outs: about 108,680 people within a 30-minute drive.

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

Calvert County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Calvert County Health Department - Environmental Health Services (On-Site Sewage Disposal). 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 Calvert County?

Living in an RV on your own land in Calvert County is allowed on a temporary basis only: One recreational vehicle used as a temporary shelter on the premises of a residence whose livability was destroyed by an owner-unintentional fire or other disaster. The residence must have been rendered unlivable by fire or another disaster. The disaster must not have been intentionally caused by the owner. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Calvert County, Maryland?

Land in Calvert County runs about $11,544 per acre, based on the latest county data.

What is the water situation in Calvert County?

Calvert County gets about 45.7" of rain a year, with severe drought in roughly 2.1% of years.

How remote is Calvert County?

A representative private-land location has about 108,680 people within a 30-minute drive and 9,212,066 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 Calvert compares in Maryland

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