York County, Maine has no county building permit and no county zoning: each town or city handles building permits, inspections and land-use rules12. MUBEC inspections are mandatory in municipalities with more than 4,000 residents, while smaller municipalities may choose enforcement3. Septic uses state rules, but the town's Local Plumbing Inspector reviews the application, issues the permit and handles inspections4.
At a glance
- Building permit
- No county permit; requirements and inspections depend on the municipality13
- Zoning
- No county zoning; each municipality zones through its Code Enforcement Officer2
- Septic permits
- Required before new, expanded or replacement-system work; issued by the town Local Plumbing Inspector under state rules45
- Accessory dwelling
- At least one ADU must be allowed on a qualifying lot with a single-family home6
- Manufactured homes
- Must be allowed wherever other single-family homes are allowed7
- Certificate of occupancy
- Required before moving in, in towns of more than 2,000 inhabitants8
- Septic soils
- Only 4.2% of the county's soils are free of severe limits for a conventional drain field9
- RV living
- Not confirmed countywide; ask the municipality's Code Enforcement Officer2
Who to call
Septic permits
Maine CDC, Subsurface Wastewater Program
Statewide septic (subsurface wastewater) rules, forms and fee schedule; the permit itself is issued by the town's Local Plumbing Inspector
11 State House Station, Augusta, Maine 04333
Also useful
Deeds, plats and other recorded land documents for York County, and a free property fraud alert service
45 Kennebunk Road, Alfred, ME 04002
Building permits
City of Biddeford Code Enforcement Office (example: the county's largest city)
Building, plumbing and electrical permits, inspections, zoning, shoreland zoning and floodplain rules inside the City of Biddeford only
205 Main Street, Biddeford, ME 04005
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in York County, Maine?
It depends on the municipality, because York County, Maine issues no residential building permit of its own; each town or city administers building requirements1. MUBEC inspections are mandatory in municipalities with more than 4,000 residents, while smaller municipalities may choose to enforce the code3. A municipality can use its own building officials, an agreement with another jurisdiction or qualified third-party inspection reports10.
In municipalities of more than 2,000 inhabitants, a new building may not be occupied until the building official issues a certificate of occupancy8. A septic permit is still required before new, expanded, replacement or component installation work begins, apart from normal maintenance and repair5. Call the municipality where the parcel sits and ask its Code Enforcement Officer which building permit, inspection and occupancy steps apply2.
Who issues building permits in York County, and how do you reach them?
In York County, Maine the building department is the town or city Code Enforcement Officer, not a county office21. For example, the City of Biddeford, the county's largest city, runs a Code Enforcement Office at 205 Main Street that issues building, plumbing and electrical permits; call (207) 284-9236 or email [email protected]11. Biddeford charges $15 per $1,000 of value plus a $60 application fee, residential permits typically take 10 to 14 days, and inspections must be booked 48 hours ahead11. Other towns set their own fees and timelines, and Biddeford's office has no authority outside the city1.
The county government's main land office is the York County Registry of Deeds at 45 Kennebunk Road in Alfred (207-324-1576), where deeds and plats are recorded and where you can sign up for free property fraud alerts12.
Does York County, Maine have zoning?
Not at the county level. Land use and zoning in York County are set by each municipality and administered by its Code Enforcement Officer2. Lot sizes, setbacks, RV occupancy and rules for a primary tiny home therefore depend on the municipality. Biddeford, for example, administers its own shoreland zoning ordinance11.
York County municipalities must allow at least one accessory dwelling unit on a qualifying lot where a single-family dwelling is the principal structure6. The statewide minimum for an ADU is 190 square feet unless the state building-code board adopts a different minimum, and a municipality may set a maximum size13. That minimum applies to ADUs, not every dwelling13. Manufactured and qualifying modular homes must be allowed where other single-family homes are allowed, subject to permitted local design rules7.
How do septic permits work in York County?
York County septic systems follow Maine rules and forms, while each municipality's Local Plumbing Inspector examines applications, issues permits and performs or coordinates inspections4. New, expanded and replacement systems—and installation of individual components—need a permit before work begins, except for normal maintenance and repair5. Applications generally need a site evaluation prepared by a licensed site evaluator or professional engineer, and work must begin within 24 months after issuance5.
A system must pass a site-preparation inspection before installation and another inspection before final backfilling; notify the Local Plumbing Inspector at least 24 hours before it is ready14. Only 4.2% of York County soils are free of severe limits for a conventional drain field, so complete the site evaluation before buying9. Primitive systems using graywater and an alternative toilet are recognized options, but installation still requires the applicable wastewater permit15.
Can you live in an RV or tiny home on your land in York County?
We could not confirm a countywide rule for living in an RV or using a tiny home as the primary dwelling in York County; ask the municipality's Code Enforcement Officer before buying2. Maine's campground rule covers qualifying commercial campgrounds and does not answer whether a household may occupy an RV on its own lot16.
An ADU has a clearer route: at least one must be allowed on a qualifying lot with a single-family home, subject to shoreland zoning, building and municipal requirements6. The 190-square-foot minimum is specifically for an ADU, not a blanket minimum for every tiny home13. Before an ADU can be certified for occupancy, the owner must verify adequate water and wastewater service; a septic connection requires verification by the Local Plumbing Inspector, while a well requires potable-water access and acceptable domestic-use testing17.
Building a home in York County: what are the steps, in order?
- Call the town or city Code Enforcement Officer to confirm zoning, setbacks and the local building-permit process21.
- Hire a licensed site evaluator or professional engineer for the required septic site evaluation and design5.
- Apply to the Local Plumbing Inspector and wait for the septic permit before starting covered work45.
- Apply for the municipal building permit and confirm how MUBEC inspections will be performed3.
- Use Maine's decision tree to determine whether flood-prone development needs a Flood Hazard Development Permit18.
- Notify the Local Plumbing Inspector at least 24 hours before each required septic inspection and do not backfill before the final inspection14.
- Obtain a certificate of occupancy before moving in where the municipality has more than 2,000 inhabitants8.
What should you check before you buy land in York County?
Start with soils: only 4.2% of York County's soils rate well for a conventional drain field, so a passing site evaluation is worth more than a view9. Pull the deed and any recorded plats at the York County Registry of Deeds12.
York County is heavily wooded, with 82.4% forest cover, and mostly gentle: 88.8% of the land slopes 15% or less1920. It gets about 49 inches of precipitation a year, so ask about wet soils and drainage21. Land is not cheap here: farmland averages $7,643 an acre and a typical home is valued around $537,2242223. The effective property tax rate is about 1%, with a median bill of $3,691 a year2425.
Watch-outs
- York County, Maine rules differ in every town: a parcel's zoning, RV and minimum-lot rules come from the town ordinance, so call that town's Code Enforcement Officer before you buy2.
- York County municipalities with more than 4,000 residents must conduct MUBEC enforcement, while smaller municipalities may choose it; confirm the inspection path with the local code office3.
- Only 4.2% of York County's soils are free of severe limits for a conventional drain field, so make any land purchase contingent on a licensed site evaluator's test pits9.
- The York County Registry of Deeds offers free email alerts when a document is recorded in your name, a cheap guard against property fraud12.
Sources
- Maine Uniform Building and Energy Code (MUBEC) Ch. 1 (2026 county census)
- MRS Title 30-A Ch. 187 Planning and Land Use Regulation (2026 county census)
- Title 10, §9724: Application, quoted and re-checked
- Subsurface Wastewater System Permitting, quoted and re-checked
- Subsurface Wastewater System Permitting, quoted and re-checked
- Title 30-A, §4364-B: Accessory dwelling units, quoted and re-checked
- Maine Revised Statutes Title 30-A, §4358: Regulation of manufactured housing (Maine statewide rule), quoted and re-checked
- Title 25, §2357-A: No occupancy without certificate; appeal (Maine statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Maine Uniform Building and Energy Code — Chapter 1: Administrative Procedures (Maine statewide rule), quoted and re-checked
- City of Biddeford Code Enforcement Office (example: the county's largest city) (biddefordmaine.org)
- York County Registry of Deeds (yorkcountymaine.gov)
- Title 30-A, §4364-B: Accessory dwelling units, quoted and re-checked
- Subsurface Wastewater System Permitting, quoted and re-checked
- Subsurface Wastewater System Permitting, quoted and re-checked
- Maine Revised Statutes Title 22, §2491: Definitions (Maine statewide rule), quoted and re-checked
- Title 30-A, §4364-B: Accessory dwelling units, quoted and re-checked
- Floodplain Ordinances & Permit Forms (Maine statewide rule), quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Annual precipitation: Bolthole Index county data
- Farmland value per acre (USDA census): Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 29, 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.