Bolthole Index

Washtenaw County, Michigan

Building permits, zoning and land rules in Washtenaw County, Michigan

45Index Score / 100
#78 of 83 in Michigan

Washtenaw County, Michigan requires a building permit before construction, and which office issues it depends on the township or city: the county Building Department inspects structures, but townships and cities may use their own enforcing agency123. Zoning is set by each township or city, not by the county4. Septic permits for every address, township or city alike, come from Washtenaw County Environmental Health before any system is installed56.

At a glance

Building permit
Required; the enforcing office depends on your township or city173
Zoning
Check the parcel's township or city; a complete countywide determination was not confirmed4
Septic permit
Required before installation; handled by Washtenaw County Environmental Health65
Owner-builder exemption
A person building a home for their own use and occupancy on their own property may qualify for the state licensing exemption; it does not remove the building permit8
Certificate of occupancy
Required before you use or occupy new or altered construction9
Tiny house on wheels
Local land-use approval is unconfirmed; ask the township or city before buying10
Median property tax bill
$5,505 a year, at an effective rate of about 1.6%1112
Population density
About 518 people per square mile countywide13

Who to call

Building permits

Washtenaw County Building Department

Building inspections and building-code enforcement where Washtenaw County is the designated enforcing agency; applicants should confirm jurisdiction for their township or city.

Septic permits

Washtenaw County Environmental Health Department

Soil evaluations and permits for domestic wells and onsite sewage systems in Washtenaw County.

734-222-3800

705 N Zeeb Rd, Ann Arbor, MI 48103

Roads & driveways

Washtenaw County Road Commission

Right-of-way permits, including residential and commercial driveway applications, for work in road right-of-way under Road Commission jurisdiction.

(734) 327-6642

555 N. Zeeb Road, Ann Arbor, MI 48103

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

Going off-grid in Washtenaw 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 Washtenaw County, Michigan?

Yes. Washtenaw County, Michigan requires a building permit before construction or remodeling begins1. Residential work follows the Michigan Residential Code, while the current Michigan Building Code took effect April 9, 20257. The enforcing agency depends on the parcel's jurisdiction, so the county is not automatically the permit office for every township or city3. A new or altered building subject to Michigan's construction code cannot be occupied until the code official issues a certificate of occupancy9. A person erecting a residence for their own use and occupancy on their own property may qualify for Michigan's residential-builder licensing exemption, but that exemption concerns licensing and does not eliminate any applicable building-permit requirement8. The Washtenaw County Building Department inspects commercial and residential structures for compliance with the State Building Code where the county is the enforcing agency142.

Who issues building permits in Washtenaw County, and how do you reach them?

Confirm the enforcing agency for the parcel before applying, because building-code jurisdiction varies across Washtenaw County3. Washtenaw County has a Building Department that inspects commercial and residential structures for State Building Code compliance where the county is the enforcing agency142. A township, city or another enforcing agency may receive the application elsewhere in the county, so identify the municipality from the parcel record and ask that municipality who issues its building permits before preparing plans3. Zoning approval is a separate local step: ask the parcel's township or city whether zoning approval must precede the building-permit application4. Septic and well questions do not move with building jurisdiction; Washtenaw County Environmental Health is the countywide contact for onsite sewage permitting5.

Does Washtenaw County have zoning?

Zoning is administered at the township or municipal level in Washtenaw County, and the county planning department keeps township ordinances and maps on file4. Michigan law allows counties, townships, cities and villages to establish zoning districts, but the statewide framework does not identify the district or rules for a particular parcel15. A complete countywide zoning determination was not confirmed, so do not infer that land is unrestricted from a county-level search. Ask the parcel's township or city about minimum lot size, setbacks, building height, lot coverage, accessory dwellings and agricultural uses before designing the project. Bridgewater Township's zoning ordinance sets setbacks by district, including its AG district, so the dimensions must come from the township's current ordinance16.

How do septic permits work in Washtenaw County?

Washtenaw County Environmental Health handles onsite sewage permitting, and a sewage permit is required before a system may be installed56. A soil evaluation is required before building a home that will not use a municipal or centralized sewage-treatment facility6. Septic permits stay with the county even where a township or city runs building permits and zoning. Installations and repairs must be performed by people certified by the county Environmental Health Division5. The office is at 705 North Zeeb Road, Ann Arbor, Michigan 48103, phone 734-222-380017. Michigan requires household sanitary sewage to go to a municipal sewer or an onsite septic system18. Only about 12 percent of Washtenaw County soils lack severe limits for a conventional drain field, so make the soil evaluation an early purchase contingency rather than assuming a standard system will fit19. We could not confirm the county's inspection stages or permit fees; ask Environmental Health before scheduling work.

Can you live in an RV or place a tiny home on your land in Washtenaw County?

We could not confirm a countywide rule allowing RV occupancy, temporary camping or tiny-home occupancy on private land in Washtenaw County. Ask the parcel's township or city zoning office before buying land or moving a unit onto it, because local zoning districts and regulations control parcel-level land use415. Michigan guidance for tiny houses proposed as resort cabins says a tiny house is not treated as a recreational unit merely because it is on wheels, and that local zoning, building, electrical, plumbing and health approvals apply in that setting10. That resort guidance does not establish permission to occupy a tiny house or RV on an ordinary private parcel. If the site will use septic, Washtenaw County requires the sewage permit before installation and requires a soil evaluation for a home without municipal or centralized sewer service6.

Building a home in Washtenaw County: the steps, in order

  1. Identify the parcel's township or city and confirm which agency enforces the building code there3.
  2. Ask that local zoning office which approvals, setbacks and dimensional rules apply4.
  3. If the home will not use municipal or centralized sewer service, obtain the required soil evaluation and apply to Washtenaw County Environmental Health for the sewage permit before installation6.
  4. Submit the building-permit application to the enforcing agency before construction begins13.
  5. Ask the road authority whether the proposed entrance needs approval; the Washtenaw County Road Commission requires a right-of-way permit for work in road right-of-way under its jurisdiction20.
  6. Use installers certified by Washtenaw County Environmental Health for septic installation or repair5.
  7. Complete the required inspections21, then request a certificate of occupancy before using a new or altered building covered by Michigan's construction code9.

What to check before you buy land in Washtenaw County, Michigan

Before making an offer, identify the parcel's township or city and obtain its zoning map and dimensional rules; a complete countywide answer for minimum lot size, setbacks and permitted uses was not confirmed415. Make septic feasibility a contingency when municipal or centralized sewer service is unavailable, because a county soil evaluation is required and only about 12 percent of Washtenaw County soils lack severe limits for a conventional drain field619. Confirm the building-code enforcing agency because jurisdiction changes by municipality3. Ask the applicable road authority about driveway access; the verified county-road permit statement applies specifically to Freedom Township20. The median property-tax bill is $5,505 a year at an effective rate of about 1.6 percent, useful context when comparing raw-land carrying costs1112. We could not confirm countywide private-well, floodplain-development or land-division requirements, so ask the township or city and the relevant county office before closing.

Watch-outs

  • Do not assume one building department covers all of Washtenaw County: building-code jurisdiction depends on the township or city3.
  • We could not confirm a countywide right to occupy an RV or tiny home on private land; ask the parcel's township or city zoning office before buying or moving a unit onto the site4.
  • A septic permit is required before installation, and installation or repair must be done by someone certified by Washtenaw County Environmental Health65.

Sources

  1. Washtenaw County Building & Construction (2026 county census)
  2. Building & Construction, quoted and re-checked
  3. Building Permit Information (Michigan statewide rule), quoted and re-checked
  4. Washtenaw County Ordinances (2026 county census)
  5. Installing a Septic System in Washtenaw County, quoted and re-checked
  6. Installing a Septic System in Washtenaw County, quoted and re-checked
  7. Code Books, quoted and re-checked
  8. Frequently Asked Questions – Residential Builder, quoted and re-checked
  9. Certificate of Occupancy Request (Michigan statewide rule), quoted and re-checked
  10. michigan.gov (Michigan statewide rule), quoted and re-checked
  11. Median property tax bill: Bolthole Index county data
  12. Effective property tax rate: Bolthole Index county data
  13. Population density: Bolthole Index county data
  14. Washtenaw County Building Department (washtenaw.org)
  15. Michigan Zoning Enabling Act (Michigan statewide rule), quoted and re-checked
  16. 2004 Aug 3 :: Bridgewater Township :: ZONING AMENDMENT REFERENDUM, quoted and re-checked
  17. Washtenaw County Environmental Health Department (washtenaw.org)
  18. Disposal of residential wastewater such as swimming pool water (Michigan statewide rule), quoted and re-checked
  19. 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
  20. Washtenaw County Road Commission (wcroads.org)
  21. MCL 125.1512, Inspection of construction (Michigan statewide rule), quoted and re-checked

Written October 10, 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, Washtenaw County requires a building permit for a home.

RuleWashtenaw CountyLivingston CountyLenawee CountyWayne CountyMonroe CountyJackson CountyIngham County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesNoYesNoNoYes
Septic permitsCounty Dept. of Public HealthCounty Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.

County locator

Washtenaw County in Michigan

45
County map
Washtenaw County highlighted among the Michigan counties · colored by Index score

How Washtenaw County scores

Seclusion13100% ev.
Self-Sufficiency64100% ev.
Admin Boringness46100% ev.
Durability85100% ev.
Property Autonomy77100% ev.
Carry Cost63100% 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 →

$426kTypical home
1.6%Property tax
$7,616Land / acre
33.7"Annual rain
1.9% of yrsSevere drought
2 / yr (+2)Mid-century 100°F days
11.3 daysMid-century dry spell
1.36" (+7.3%)Mid-century 1-day rain
1.68×Wildfire change factor
100%Forward climate coverage
$1,335Home insurance / yr
-0.3% / yrInsurance growth
1.43%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
349,461People within 30 min
8,650,376People within 2 hr
354,894Radius comparison (15 mi)
517.8People / sq mi
1.5%Federal land
96.2%Land at 15% slope or less
12.3%Soils rated "not limited" for septic (strict USDA rating)
53,564 acWorkable land screen
45.8%Wooded land
59.2 tonsBiomass / forest ac
48.4°FAvg temp

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Cities and towns in Washtenaw County

Inside a city, town or township here, that government usually sets zoning and may issue its own building permits; the county’s rules above cover land outside them.

Not yet researched: Ann Arbor Township · Ann Arbor · Augusta Township · Village of Barton Hills · Bridgewater Township · Dexter Township · Freedom Township · Lima Township · Lodi Township · Lyndon Township · Manchester Township · Salem Township · Saline · Saline Township · Sharon Township · Superior Township · Sylvan Township · Webster Township · York Township · Ypsilanti Township · Ypsilanti

Answers from the rulebook for Washtenaw County

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

Washtenaw County rules

  • InspectionsRequired

    Commercial and residential structures inspected by the Washtenaw County Building Department.

    • Inspections are provided to ensure compliance with the State Building Code.
    • The county page separately directs users to determine what inspections are required for a building permit.
    “To help to protect the health, welfare, and safety of the citizens and visitors of Washtenaw County, the Washtenaw County Building Department provides inspections of commercial and residential structures to ensure compliance with the State Building Code.”
  • Who permits septicCounty

    Onsite sewage permitting and related environmental-health administration in Washtenaw County.

    • Sewage system installations and repairs must be performed by individuals certified by the Washtenaw County Environmental Health Division.
    “Sewage system installations and repairs must be performed by individuals certified by the Washtenaw County Environmental Health Division.”
  • Septic permitRequired

    Installation of a sewage system in Washtenaw County.

    • A soil evaluation is required before building a home not served by a municipal or centralized sewage treatment facility.
    “Find information about obtaining a sewage permit, which is a requirement before you may install a sewage system.”
  • County-wide zoningPresent

    Zoning is in force but administered at the township/municipal level; the county Department of Planning keeps township zoning ordinances and maps on file.

    Washtenaw County Ordinances ↗Scouted from the county site, not yet independently re-checked

Michigan rules that apply here

  • Building permitRequired

    Construction of a building or structure in Michigan, subject to exceptions in the Michigan construction code.

    • The owner, or the owner's builder, architect, engineer, or agent, must submit a written application to the appropriate enforcing agency before construction.
    • The application must use the commission-prescribed form, include the established enforcing-agency fee, contain a detailed affidavit-verified statement of specifications, include complete scaled plans, and include a site plan showing dimensions and locations of proposed and existing buildings or structures on the premises.
    • The act states 'Except as otherwise provided in the code'; specific exemptions require separate verification.
    “Except as otherwise provided in the code, before construction of a building or structure, the owner, or the owner's builder, architect, engineer, or agent, shall submit an application in writing to the appropriate enforcing agency for a building permit.”
  • Owner-builder exemptionAvailable (with conditions)

    A person erecting a residential structure for the person's own use and occupancy on the person's property in Michigan, including Washtenaw County.

    • The exemption applies to the person’s own use and occupancy on the person’s property.
    • The quoted statutory definition concerns residential-builder licensure; it does not eliminate any applicable building-permit requirement.
    • The same official FAQ states that a person working on one undertaking or project with an aggregate contract price under $600 may also qualify for a separate licensing exemption, but that exemption does not apply when contracts are divided to evade the act.
    “except for the person's own use and occupancy on the person's property.”
    One more reviewed finding on this topic
    • Available (with conditions) — Michigan residential-builder licensing when an individual erects a residential structure or combination residential and commercial structure for the individual's own use and occupancy on the individual's property.
      “or a person who erects a residential structure or combination residential and commercial structure except for the person's own use and occupancy on the person's property.”
  • Building code adoptedAdopted (with conditions)

    Construction, alteration, relocation, demolition, use, and occupancy of buildings and structures statewide in Michigan, including residential requirements administered under the Michigan Residential Code.

    • The current Michigan Building Code is the 2021 edition and is effective April 9, 2025.
    • The rule adopts the International Building Code by reference with Michigan amendments and exceptions.
    • The adopted rule excludes sections 104.2, 104.3, 104.8, 104.8.1, 104.10, 105.3, 105.3.1, 105.3.2, 105.6, 109.2 to 109.6, 111.2, 111.3, 113.2, 113.3, 113.4, 114.1, 114.2, 114.3, 114.4, 115.1 to 115.4, 423.5, 423.5.1, 423.5.2, 903.2.8.4, 2902 to 2902.6, Table 2902.1, section 3005.5, the definition of agricultural building in section 202, and the definition of recreational vehicle in Appendix G.
    • The rule also incorporates IECC 2021, IEBC 2021, IMC 2021, IPC 2021, IPSDC 2021, and NFPA 70 2023 as listed in chapter 35.
    • Residential requirements are contained in the Michigan Residential Code.
    • The code may be purchased from the International Code Council through the bureau website at a cost of $144.00 as of the time of adoption of the amendatory rules.

    building code edition: 2021 Michigan Building Code (Michigan amendments and listed exceptions apply) · effective date: 2025-04-09

    “The provisions of the international building code, 2021 edition, including appendices F, G, and H, except for [...] govern the construction, alteration, relocation, demolition, use, and occupancy of buildings and structures, and, with exceptions noted, the international building code is adopted by reference in these rules.”
    2 more reviewed findings on this topic
    • Adopted — Michigan construction codes applicable in Washtenaw County.
      “2021 Michigan Building Code -Current Code-Effective April 9, 2025”
    • Adopted — Building construction, alteration, occupancy, and maintenance in Washtenaw County under Michigan law.
      “The Michigan Building Code controls all matters concerning the construction, alteration, addition, repair, removal, demolition, use, location, occupancy, and maintenance of all buildings and structures and their service equipment. Presently, provisions for one- and two-family dwellings are included in the Michigan Residential Code.”
  • Certificate of occupancyRequired

    A new building or altered building subject to the Michigan construction code.

    • The building or altered building may not be used or occupied until the code official issues a Certificate of Occupancy.
    • The permit holder or authorized agent must submit a written request after project completion.
    • The request must include applicable building, electrical, mechanical, plumbing, boiler, elevator, plan-review, and school fire-services project numbers.
    • The certificate cannot be issued until all fees are paid, permits are finaled, and permitted work is completed in accordance with the permit, code, and applicable laws and ordinances.
    • If an electrical, mechanical, plumbing, boiler, elevator, plan-review, or Fire Services project is not required, the request must state “not applicable.”
    “A new building or a building that is altered shall not be used or occupied until a Certificate of Occupancy is issued by the code official.”
  • Zoning districtsPartial

    Michigan's statutory zoning framework for counties, townships, cities, and villages; this does not identify the actual zoning districts adopted by each local government.

    • Actual zoning districts and district regulations are local and must be checked in the applicable county, township, city, or village ordinance.
    • The cited act's stated effective date is July 1, 2006.
    “to provide for the establishment in counties, townships, cities, and villages of zoning districts;”
  • Off-grid sanitationLimited

    Residential sanitary sewage disposal in Michigan without connection to a municipal sanitary sewer.

    • Sanitary sewage from toilets, sinks, showers, washing machines, and dishwashers must be directed to a municipal sanitary sewer or an onsite septic system.
    • An onsite septic system is subject to the EGLE-coordinated permitting and local-health-department permitting and inspection framework.
    • The source does not establish a statewide authorization for untreated discharge or arbitrary off-grid sanitation methods.
    “All sanitary sewage [...] must be directed to municipal sanitary sewer or to an onsite septic system.”
  • Well permitLimited

    Drilling a water well in Michigan under county ordinances administered by local health departments.

    • Before drilling, the applicable county ordinance requires either obtaining a well permit from the local health department or notifying the local health department.
    • Local ordinances differ from county to county, so specific requirements must be confirmed with the local health department.
    • Permit conditions may address well placement, minimum depth, minimum capacity, and other conditions.
    • The cited page separately states that permits are required before drilling or performing major repairs, but the express notification alternative means a permit is not invariably required in every case.
    “All Michigan counties have ordinances requiring that a well permit be obtained from the local health department (or the local health department be notified) before the well is drilled.”
  • Mandatory utility hookupConditional

    Buildings and premises in Michigan that have plumbing fixtures or drainage piping.

    • Connection must be to a public sewer where available, or otherwise to an approved private sewage disposal system.
    • Plumbing work cannot begin until the appropriate enforcing agency issues a permit.
    • Local requirements may apply to water service and building sewer installation.
    “Every building in which plumbing fixtures are installed [...] shall be connected to a public sewer, where available, or an approved private sewage disposal system.”
  • Agricultural exemptionConditional

    Building-permit exemption for shade cloth structures constructed for nursery or agricultural purposes under Michigan Building Code Part 4.

    • The exemption applies to shade cloth structures constructed for nursery or agricultural purposes.
    • Service systems are excluded from the exemption.
    • The exemption does not authorize work violating the building code or other laws or ordinances of the jurisdiction.
    “Exemptions from permit requirements of the code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of the code or any other laws or ordinances of this jurisdiction. Permits shall not be required for any of the following: [...] (x) Shade cloth structures constructed for nursery or agricultural purposes, not including service systems.”
  • Subdividing landRegulated (with conditions)

    Subdivision plat review and administration under Michigan's Land Division Act statewide.

    • The Office of Land Survey and Remonumentation administers applicable Land Division Act provisions.
    • Staff conducts final reviews of plat maps for compliance with the Act.
    • Final plats are authorized for submission to the Register of Deeds for proper recordation.
    “The Office of Land Survey and Remonumentation administers the applicable provisions of the Land Division Act, 1967 PA 288 in order to ensure the orderly development of subdivisions in the State of Michigan. Staff conducts final reviews of plat maps to ensure compliance with the Act and authorizes final plats to be submitted to the Register of Deeds for proper recordation.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision plat review and recordation in Michigan.
      “The Office of Land Survey and Remonumentation administers the applicable provisions of the Land Division Act, 1967 PA 288 in order to ensure the orderly development of subdivisions in the State of Michigan. Staff conducts final reviews of plat maps to ensure compliance with the Act and authorizes final plats to be submitted to the Register of Deeds for proper recordation.”
  • Driveway accessRequired

    Commercial and residential driveways constructed or reconstructed within Michigan state highway right-of-way and access to state trunkline highways.

    • An individual permit application package must be submitted through CPS.
    • The package includes the Drainage Design Checklist for Accessing State Trunklines (Form 2484), traffic analysis if applicable, traffic impact study if applicable, and preliminary local planning commission review if appropriate.
    • A driveway constructed or reconstructed after August 6, 1969, is not lawful unless a permit has been obtained.
    • A commercial driveway permit application requires a bond; a residential driveway permit does not require a bond.
    • If accessing a state trunkline highway, the driveway permit is required in addition to the local governmental agency building permit.
    • If upgrading a driveway or only building a new driveway, a driveway permit may be all that is necessary.

    Driveway permit effective date threshold: 1969-08-06 (Driveways constructed or reconstructed after this date require a permit to be lawful) · Commercial driveway bond: true (Residential driveway permit does not require a bond)

    “Applicants must submit an individual permit application package through the Construction Permit System (CPS) with the following: Drainage Design Checklist For Accessing State Trunklines (Form 2484) Traffic Analysis, if applicable Traffic Impact Study, if applicable Preliminary review by the local planning commission, for compliance with local long-range development plans, if appropriate A driveway constructed or reconstructed after August 6, 1969, is not lawful unless a permit has been obtained.”
  • Building in a floodplainRequired

    Alteration or occupation of the 100-year floodplain of a Michigan river, stream, or drain regulated under Part 31.

    • The Part 31 permit requirement applies to rivers, streams, or drains with a drainage area of 2 square miles or greater.
    • A Part 31 EGLE permit is not required for alterations within floodplains of the Great Lakes, inland lakes, or watercourses with drainage areas less than 2 square miles, although other NREPA reviews may still be necessary.
    • Construction and fill may be permitted in non-floodway portions if local ordinances and building standards are met and compensating excavation is provided equal to the volume of fill placed in the floodplain.
    • New residential construction is specifically prohibited in the floodway.
    • The minimum residential elevation standard is one foot above the 100-year flood elevation, and some communities or counties may impose a higher standard.

    Minimum drainage area for Part 31 floodplain authority: >= 2 square miles (Part 31 does not apply below this threshold) · Lowest-floor elevation: >= 1 foot above 100-year flood elevation (Some communities and counties may require a higher elevation)

    “The Floodplain Regulatory Authority deals with the floodplains of rivers, streams, or drains which have a drainage area that is 2 square miles or greater. A permit is not required from EGLE, under Part 31, for alterations within the floodplains of the Great Lakes, inland lakes, or watercourses which have a drainage area less than 2 square miles.”
  • Permit processPublished

    Michigan Bureau of Construction Codes boiler, building, electrical, elevator, mechanical, and plumbing permit processing.

    • Permits may be obtained online through the LARA Accela portal.
    • Permits may also be obtained by mail, but LARA states that applying by mail may cause delays.
    “The Inspections Division is responsible for issuing boiler, building, electrical, elevator, mechanical, and plumbing permits. Permits can be checked and obtained expeditiously online at: https://aca-prod.accela.com/lara/ . Additionally, permits can be obtained via mail; however, applying by mail may cause delays in the applications process.”
  • Campground & park staysLimited

    Tiny houses, including tiny houses built on wheels, proposed as resort cabins or similar occupancy in Michigan.

    • The source distinguishes tiny houses from recreational units and states they cannot be treated as recreational units even if built on wheels.
    • The tiny house must be built as a resort rather than a campground.
    • Local health department permitting for wells, septic tanks, and drainfields is required as applicable.
    • Local zoning, building, electrical, and plumbing permits and final approvals are required under local authorities.
    • The source does not establish statewide zoning permission or a statewide right to occupy a tiny house.
    “Local zoning, building, electrical, plumbing permits and final approvals under local authorities.”
    3 more reviewed findings on this topic
    • Limited — RV occupancy as part of a Michigan campground consisting of five or more recreational units used for temporary living quarters.
      “requires a campground license when five or more recreational units (i.e., tents, campers, RVs) are placed on a parcel or tract of land”
    • Limited — Temporary camping in a Michigan temporary campground.
      “A temporary campground license issued by the local health department (LHD) having jurisdiction is required prior to operating a temporary campground.”
    • Limited — Occupancy of RVs and other recreational units as temporary living quarters in a Michigan campground offering sites to the public or members of an organization, where 5 or more recreational units are involved.
      “A campground owner shall ensure that a site is occupied by not more than 8 persons and by not more than 1 recreational unit.”
  • county building authorityGeneral

    Michigan counties serving as building-code enforcing agencies for residential construction in unincorporated areas, subject to the Statewide Jurisdiction List and local/state jurisdiction assignments.

    • Before construction, a written building-permit application must be submitted to the appropriate enforcing agency.
    • A permit is also required when use or occupancy changes.
    • Ordinary repairs do not require a permit, but the stated structural, egress, plumbing, electrical, mechanical, and public-health/safety limitations apply.
    • The Michigan Building Code and Michigan Residential Code govern construction; county enforcement applies only where the Statewide Jurisdiction List designates county jurisdiction.
    “If COUNTY is indicated, that unit of government receives code enforcement services from a county enforcing agency.”

Inside cities and towns in Washtenaw County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • SetbacksDistrict specific (with conditions)

    Bridgewater Township zoning districts, including the AG district, under the township zoning ordinance amendment described in the official county elections archive.

    • The source is an official archive summary of a 2004 referendum and does not provide the numeric setback dimensions or the complete current ordinance text.
    • The source states that the ordinance changes setback standards; applicable setbacks therefore require checking the current Bridgewater Township zoning ordinance.
    “existing 75-foot front yard setback standard in the AG (General Agriculture) zoning district.”

Set by your township or city, not the county

In Michigan, zoning is adopted by each township or city, so Washtenaw County has no county-wide answer on these. Find your township or city in the list of places on this page, or call its clerk or zoning administrator.

  • Minimum dwelling size
  • Minimum lot size
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Short-term rentals

Still unanswered

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

  • Local zoning — Local zoning across Washtenaw County municipalities and townships.
  • Septic inspection — Inspections for septic and well projects in Washtenaw County.
  • Permit fees — Building, septic, well, and related permit fees in Washtenaw County.

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 Washtenaw County, Michigan

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

Washtenaw County scores 45/100 on the Bolthole Index, a marginal county profile. Its strengths: mixed durability signals and a stronger property-autonomy legal backdrop. Watch-outs: about 349,461 people within a 30-minute drive.

Do you need a building permit in Washtenaw County, Michigan?

Washtenaw County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Washtenaw County Department of Public Health, Environmental Health Division. 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.

How much does land cost in Washtenaw County, Michigan?

Land in Washtenaw County runs about $7,616 per acre, based on the latest county data.

What is the water situation in Washtenaw County?

Washtenaw County gets about 33.7" of rain a year, with severe drought in roughly 1.9% of years.

How remote is Washtenaw County?

A representative private-land location has about 349,461 people within a 30-minute drive and 8,650,376 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 Washtenaw compares in Michigan

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