Building permits, zoning and land rules in Aroostook County, Maine

At a glance

Building permit

LUPC generally requires one for a new house, camp or addition in its service area¹

Zoning

LUPC zones the unorganized territory; organized towns set their own⁵

Septic permits

Required before new, expanded or replacement system work begins⁴

Owner-builder exemption

A narrow contract-law exemption only; it does not waive building permits⁶

RV / temporary camping

Personal campsites use LUPC's residential permit process; long-term RV living is unconfirmed⁷

Manufactured homes

Must be allowed on any lot where a single-family home is allowed⁸

Accessory dwelling units

Municipalities must allow at least one per single-family lot, min 190 sq ft⁹

LUPC building permit fee

$0.15-$0.20 per square foot of footprint, plus $100 for a special exception¹⁰

Who to call

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 Aroostook County, Maine?

In the unorganized and deorganized parts of Aroostook County served by the Land Use Planning Commission, building a new house or camp or expanding a residential structure generally requires an LUPC permit; qualifying accessory structures are the stated exception¹. Organized towns handle their own permits, so the parcel's location determines the first office to contact². Maine's Uniform Building and Energy Code applies to most construction statewide, but log homes, manufactured housing, post-and-beam or timber-frame construction, and crop-storage warehouses and silos are excluded from the cited MUBEC requirements¹¹. Municipalities with more than 4,000 residents must enforce MUBEC through inspections, while smaller municipalities may choose to enforce it¹². In a municipality with more than 2,000 inhabitants, a finished building may also need a certificate of occupancy before anyone moves in¹³.

Who handles building and zoning permits in Aroostook County?

Aroostook County's website directs owners in an organized municipality to that municipality and owners in unorganized territory to the Land Use Planning Commission¹⁴. The LUPC Caribou office is the local contact for building permits and zoning in its service area¹⁴. Applications are submitted electronically or by mail to LUPC's Augusta office; incomplete applications may be returned, and an application for a project needing a new or expanded septic system must include a signed HHE-200 form¹⁵. LUPC also regulates residential and nonresidential subdivisions in its territory through a subdivision permit application, while municipal subdivision rules may apply outside that territory¹⁶. The Aroostook County Commissioners' Office is the general county contact for questions that do not fit those state or municipal channels¹⁷. Septic applications and inspections are handled by a town or by the Local Plumbing Inspector assigned to unorganized territory³.

Does Aroostook County have zoning?

Zoning in Aroostook County depends on the parcel: organized towns administer their own land-use rules, while the Land Use Planning Commission applies districts and standards in unorganized territory². LUPC's Chapter 10 contains the land-use districts and the standards tied to them¹⁸. Aroostook County's own countywide zoning role could not be confirmed; Maine law allows a county to ask LUPC to develop regional zoning for some or all commission territory in that county, but it does not create independent general county zoning authority¹⁹. Organized towns administer shoreland zoning for construction and clearing within 75 feet of streams and within 250 feet of ponds, lakes, rivers, tidal areas and certain freshwater wetlands². Manufactured homes must be allowed wherever single-family homes are allowed, although reasonable design standards may still apply⁸. A single countywide minimum home size, lot size, setback, height or lot-coverage rule could not be confirmed; ask the town or LUPC Caribou office for the parcel's district standards¹⁴.

How do septic permits work in Aroostook County?

A permit is required before installing, expanding or replacing a septic system or any of its components in Aroostook County; normal maintenance and repair are excepted²⁰. A licensed site evaluator normally prepares a non-engineered application after a site evaluation, while a professional engineer or licensed site evaluator may prepare an engineered-system application²⁰. The site needs passing soils and must meet applicable setbacks²⁰. A town or the Local Plumbing Inspector assigned to unorganized territory examines the application, issues the permit and performs the local inspection work³. The system must pass a site-preparation inspection before installation and another inspection before final backfilling²⁰. Work cannot begin before the inspector issues the permit, and work must commence within 24 months after issuance⁴. The scheduled fee for a complete non-engineered system is $250, plus 25% and a $15 water-quality surcharge²⁰. Only 3.5% of county soils avoid severe limitations for a conventional drain field, so make the site evaluation a pre-purchase priority²¹.

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

A countywide rule allowing long-term RV or tiny-home occupancy in Aroostook County could not be confirmed. In LUPC territory, a nonpublic, noncommercial personal campsite is covered by the residential building-permit application, and zoning, wastewater, floodplain and access requirements may still apply⁷. LUPC's separate minor-campground rule defines transient occupancy as no more than 150 days in a calendar year, but that rule does not by itself authorize permanent RV living on a private parcel²². Manufactured housing has a clearer path: qualifying manufactured homes must be allowed on lots where single-family homes are allowed, subject to applicable permits and reasonable design standards⁸. Maine also requires at least one accessory dwelling unit on a qualifying single-family lot, with a minimum size of 190 square feet and proof of adequate water and wastewater service before occupancy⁹. For a short-term rental in LUPC territory, the use must be in a subdistrict allowing dwellings or residential campsites and the operator must file a notice with LUPC²³. Ask the town or LUPC Caribou office about the proposed occupancy before buying or placing a unit¹⁴.

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

1. Confirm whether the parcel is in an organized town or LUPC-served territory; that decides who handles building and zoning².
2. Ask the town or LUPC Caribou office which district standards and permits apply to the proposed house, campsite or subdivision¹⁴¹⁶.
3. For an LUPC project, submit the application to the Augusta office by email or mail, include a signed HHE-200 when new or expanded septic is proposed, and wait for the permit before starting construction¹⁵²⁴.
4. Budget the LUPC structure fee of $0.15 per square foot of footprint in a Commission-approved subdivision or $0.20 elsewhere, plus $100 for a special exception when required¹⁰.
5. Have the septic site evaluated, obtain the disposal-system permit, and schedule both required inspections²⁰.
6. Use Maine's decision tree to determine whether development in a mapped flood area needs a Flood Hazard Development Permit²⁵.
7. In an organized municipality, confirm MUBEC inspection and certificate-of-occupancy requirements with the local building official before construction¹²¹³.

What to check before you buy land in Aroostook County

Aroostook County is sparsely settled, with about 10.1 people per square mile, and the nearest city of 100,000 or more is about 287 miles from the county's center²⁶²⁷. About 87.9% of the county is wooded and 92.2% of its land has a slope of 15% or less²⁸²⁹. Soil is the sharper building constraint: only 3.5% of county soils avoid severe limitations for a conventional septic drain field, so obtain a site evaluation before committing to a homesite²¹. Confirm whether the parcel is in an organized town or LUPC territory, then identify its zoning district, shoreland status and flood exposure before closing²²⁵. Aroostook farmland averages about $2,403 an acre, while the typical home value is about $173,857³⁰³¹. The effective property-tax rate is about 1.2%, the median annual property-tax bill is about $1,611, and the typical annual home-insurance premium is about $1,036³²³³³⁴. A countywide private-well permit rule and general driveway-access rule could not be confirmed; ask the town or LUPC Caribou office which authority handles the parcel¹⁴.

Watch-outs

• Building and zoning authority changes at the organized-town boundary: contact the municipality inside an organized town and the Land Use Planning Commission in its service area²¹⁴.
• Maine's owner-builder provision (Title 10, section 1489) only lets a homeowner and contractor exempt their construction contract from certain consumer-protection terms; it does not waive a building permit, inspection or certificate of occupancy that otherwise applies³⁵⁶.
• A countywide rule allowing indefinite RV living on unimproved land could not be confirmed; ask the town or LUPC Caribou office before using an RV as a residence⁷¹⁴.

Sources

1. LUPC: Building Permit Application Assistance, quoted and re-checked
2. Laws & Ordinances: Be Woods Wise, quoted and re-checked
3. Subsurface Wastewater Unit, quoted and re-checked
4. Subsurface Wastewater System Permitting, quoted and re-checked
5. Maine Land Use Planning Commission (DACF) (2026 county census)
6. Title 10, §1489: Exemption (Maine statewide rule), quoted and re-checked
7. Building Permit Application Form, quoted and re-checked
8. Maine Revised Statutes Title 30-A, §4358: Regulation of manufactured housing (Maine statewide rule), quoted and re-checked
9. Maine Revised Statutes Title 30-A, §4364-B: Accessory dwelling units (Maine statewide rule), quoted and re-checked
10. Maine Land Use Planning Commission Building Permit Application (Maine statewide rule), quoted and re-checked
11. Division of Building Codes and Standards, quoted and re-checked
12. Title 10, §9724: Application, quoted and re-checked
13. Title 25, §2357-A: No occupancy without certificate; appeal (Maine statewide rule), quoted and re-checked
14. Maine Land Use Planning Commission - Caribou (Northern Regional) Office (aroostook.me.us)
15. LUPC: Building Permit Application Assistance, quoted and re-checked
16. LUPC Application Forms, quoted and re-checked
17. Aroostook County Administration / Commissioners' Office (aroostook.me.us)
18. Land Use Districts and Standards - Chapter 10 (Maine statewide rule), quoted and re-checked
19. Title 12, §685-C: Miscellaneous provisions (Maine statewide rule), quoted and re-checked
20. Subsurface Wastewater System Permitting, quoted and re-checked
21. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
22. Maine Revised Statutes Title 12, §682: Definitions (Maine statewide rule), quoted and re-checked
23. Operating a Short-Term Rental in the Commission’s Service Area, quoted and re-checked
24. Maine Land Use Planning Commission Building Permit Application (Maine statewide rule), quoted and re-checked
25. Floodplain Ordinances & Permit Forms (Maine statewide rule), quoted and re-checked
26. Population density: Bolthole Index county data
27. Distance to the nearest metro area: Bolthole Index county data
28. Wooded share of land: Bolthole Index county data
29. Share of land at 15% slope or less: Bolthole Index county data
30. Farmland value per acre (USDA census): Bolthole Index county data
31. Typical home value (Zillow): Bolthole Index county data
32. Effective property tax rate: Bolthole Index county data
33. Median property tax bill: Bolthole Index county data
34. Typical home insurance premium: Bolthole Index county data
35. Title 10, §1489: Exemption (2026 county census)

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.