Building permits, zoning and septic rules in Matanuska-Susitna Borough, Alaska

At a glance

Building permit

Not required borough-wide; required inside Palmer, Wasilla and Houston city limits¹

Zoning

No comprehensive zoning, but a mandatory borough land-use permit and several Special Land Use Districts apply²³

Septic permits

Alaska DEC regulates septic; systems outside the prescriptive categories need prior approval⁴⁵

Floodplain building

Borough permit required before building, filling or grading in a designated flood hazard area⁶

Driveway permit

Required for a new or changed access point connecting to a borough road⁷

Homeowner septic installation

Available after DEC training and testing for one system at an owner-occupied home⁸

RV or tiny home living

Not confirmed either way; check the borough's land-use permit and Special Land Use District rules for the specific parcel³²

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 Matanuska-Susitna Borough, Alaska?

Matanuska-Susitna Borough has no borough-wide residential building permit, because neither the State of Alaska nor the borough has adopted the International Residential Code¹. The borough did adopt the 2021 International Building, Fire, Fuel Gas and Mechanical Codes for commercial-type construction, but that adoption does not create a residential building permit for a typical house¹⁹. Inside the borough's incorporated cities of Palmer, Wasilla and Houston, a residential building permit is required, so a parcel's exact location relative to those city limits changes the answer¹. Alaska's State Fire Marshal reviews plans for commercial and larger construction statewide, but residential housing that is a three-plex or smaller is exempt from that state review, and the Central Mat-Su Fire Service Area has been deferred to handle any state fire plan review locally rather than the state office¹⁰.

Who handles zoning and land use in Matanuska-Susitna Borough, and how do you reach them?

The borough's Permit Center, part of Development Services, is the public's main point of contact for building and land-use activity, reachable at 907-861-7822 or [email protected] from the borough building at 350 E. Dahlia Ave in Palmer³. The Permit Center issues driveway permits, land-use applications, address requests, and code-compliance referrals, and it runs an online permit portal for submitting applications³. A separate Core Area conditional-use permit is required for certain commercial, industrial, or higher-density residential projects between Palmer and Wasilla, reviewed to make sure they support the borough's growth goals³. If a parcel's unique conditions make it hard to meet the applicable zoning rule, the borough allows a request for a variance through the same office³.

Does Matanuska-Susitna Borough have zoning?

Matanuska-Susitna Borough has no comprehensive, Euclidean-style zoning ordinance covering the whole borough, but Development Services administers a mandatory borough-wide land-use permit and several distinct Special Land Use Districts with their own conditional-use requirements². Those districts include the Chickaloon SPUD, aligned with the Chickaloon comprehensive plan, the Glacier View Special Planning and Use District, the Denali State Park SPUD, and similar districts around Sutton, Talkeetna, and Nancy Lake, each requiring its own conditional-use permit for certain kinds of development³. Alaska law requires a first, second, or home-rule borough like Matanuska-Susitna to provide planning, platting, and land-use regulation on an areawide basis, which is the statutory basis for the borough's land-use permit and its Special Land Use Districts even without a single countywide zoning map¹¹. A manufactured home still needs the borough's applicable land-use or conditional-use approval for its specific location, even where no residential building permit applies²³.

How do septic permits work in Matanuska-Susitna Borough?

Alaska Department of Environmental Conservation rules govern septic systems in Matanuska-Susitna Borough⁴. Systems outside the state's prescriptive categories need DEC approval before construction, while qualifying prescriptive systems may proceed through the required notice and documentation process⁵. An approved homeowner may install one septic system at the homeowner's own owner-occupied residence after completing DEC training and passing the test; certification lasts one year, the fee is $275, and construction records are due within 90 days⁸. Engineered systems are observed during construction by the responsible engineer, while systems installed without prior plan approval require photographs and a Documentation of Construction form; the available rules do not establish a routine government inspection for every system¹². Only about 1.1% of borough soils rate without severe limits for a conventional drain field, so obtain a site-specific soil evaluation before settling on a system or budget¹³.

Can you live in an RV or tiny home on your land in Matanuska-Susitna Borough?

This guide could not confirm a specific Matanuska-Susitna Borough rule that allows or bars living in an RV or tiny home on your own land outside the cities, so check with the Permit Center about the borough's land-use permit and whether the parcel sits inside a Special Land Use District before you count on it³². Alaska's rule limiting a camp or occupiable structure on state land to 14 days without a permit, and requiring it to be removable within 48 hours, applies to state-owned land, not to privately owned land in the borough, so it does not answer this question for a private parcel¹⁴. A manufactured home brought onto private land still needs whatever land-use or conditional-use approval the borough requires for that specific location and district²³. Because Matanuska-Susitna has no residential building code outside Palmer, Wasilla and Houston, a small structure on unincorporated land skips the building-permit question entirely, but it does not skip the borough's land-use permit or any applicable Special Land Use District review¹².

Building a home in Matanuska-Susitna Borough: the steps, in order

1. Confirm whether the parcel is inside Palmer, Wasilla, or Houston city limits; if so, contact that city's own building department, since a residential building permit is required there but not borough-wide¹.
2. Check with the Permit Center whether the parcel sits inside a Special Land Use District (Chickaloon, Glacier View, Denali State Park, Sutton, Talkeetna, Nancy Lake) or the Core Area between Palmer and Wasilla, since those add their own conditional-use permit³.
3. Apply for the borough's land-use permit through Development Services before starting work³².
4. Determine with DEC whether the septic design qualifies for the prescriptive route or needs prior approval, and arrange the required construction documentation⁵¹².
5. Get a borough driveway permit for any new driveway or changed access point connecting to a borough road⁷.
6. Obtain a utility permit for water, sewer, gas, electric, or telecom infrastructure installed, maintained, or changed within a borough public right-of-way; that rule does not establish mandatory public water or sewer connection for a private home¹⁵.
7. If the site is in a designated flood hazard area, get a floodplain development permit from the borough's Floodplain Administrator before any building, filling, grading, or utility work there⁶.

What to check before you buy land in Matanuska-Susitna Borough, Alaska

At about 4.7 people per square mile, Matanuska-Susitna Borough is sparsely populated for a county-level jurisdiction of over 115,000 people, reflecting how much of the borough is remote rather than built up around Palmer and Wasilla¹⁶¹⁷. About 49.2% of the borough's land sits at 15% slope or less and 27.9% is wooded, figures that vary widely across a borough this large, so check the specific parcel's terrain and vegetation rather than relying on the borough average¹⁸¹⁹. About 19.2% of the borough is federal land, a meaningful share to check against a parcel's boundary before you assume adjoining land is open for use²⁰. Only about 1.1% of the borough's soils rate without severe limits for a conventional septic drain field, so budget for an engineered or alternative system and get a site evaluation early in your purchase timeline¹³. The borough's effective property tax rate runs about 1.1% of assessed value with a median annual property tax bill around $3,512, so factor that into a rural Alaska budget alongside the roughly $410,373 typical home value the market shows here²¹²²²³.

Watch-outs

• A parcel's building-permit answer in Matanuska-Susitna Borough depends entirely on whether it sits inside Palmer, Wasilla, or Houston city limits; the borough itself has adopted no residential building code, so confirm city limits before assuming either answer¹.
• Matanuska-Susitna Borough's land-use rules are not a single zoning map: a parcel inside the Chickaloon, Glacier View, Denali State Park, Sutton, Talkeetna, or Nancy Lake Special Land Use Districts, or inside the Core Area between Palmer and Wasilla, faces its own conditional-use permit on top of the borough's general land-use permit³.
• This guide could not confirm Matanuska-Susitna Borough's rule, if any, on living in an RV or tiny home on privately owned land outside the cities; do not assume the state's 14-day rule for camping on state-owned land applies to your own parcel¹⁴³.

Sources

1. MSB - Adopted Building Codes 2021 Code Cycle (2026 county census)
2. MSB - Development Services (2026 county census)
3. Matanuska-Susitna Borough Development Services, Permit Center (matsu.gov)
4. Options for Installing or Upgrading a Septic System, quoted and re-checked
5. Engineered Wastewater Disposal Systems, quoted and re-checked
6. Matanuska-Susitna Borough Floodplain Administrator (matsu.gov)
7. Development Services, quoted and re-checked
8. Options for Installing or Upgrading a Septic System, quoted and re-checked
9. CDBG-DR Public Action Plan | 2022 Typhoon Merbok FEMA Disaster No. 4672 (Alaska statewide rule), quoted and re-checked
10. Building Plan Review – Alaska Department of Public Safety (Alaska statewide rule), quoted and re-checked
11. Alaska Title 29 (Alaska statewide rule), quoted and re-checked
12. Engineered Wastewater Disposal Systems, quoted and re-checked
13. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
14. Lands Section Permitting – Alaska Division of Mining, Land, and Water (Alaska statewide rule), quoted and re-checked
15. Development Services, quoted and re-checked
16. Population density: Bolthole Index county data
17. County population: Bolthole Index county data
18. Share of land at 15% slope or less: Bolthole Index county data
19. Wooded share of land: Bolthole Index county data
20. Federal land share: Bolthole Index county data
21. Effective property tax rate: Bolthole Index county data
22. Median property tax bill: Bolthole Index county data
23. Typical home value (Zillow): 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.