Mat-Su Borough Zoning Guide for Home Buyers

The Matanuska-Susitna Borough — commonly called the Mat-Su — is the fastest-growing region in Alaska and one of the most complex for real estate buyers to navigate due to its unique land use landscape. Unlike Anchorage, which operates with a comprehensive zoning code, much of the Mat-Su Borough consists of unzoned land where individual property owners have significant latitude over what they build and how they use their land — but also far less protection from what their neighbors do.

Understanding Mat-Su Borough zoning — and the absence of it in many areas — is essential before buying real estate here.

Mat-Su Borough: A Patchwork of Zoned and Unzoned Land

The Mat-Su Borough encompasses roughly 24,695 square miles — larger than the state of West Virginia. It contains the cities of Palmer and Wasilla (which have their own municipal zoning), as well as vast stretches of borough land with varying levels of zoning and land use regulation.

Within Palmer city limits: Palmer has its own comprehensive zoning code covering residential, commercial, and industrial uses. Purchasing within Palmer means operating under the city’s zoning rules, which are relatively conventional.

Within Wasilla city limits: Wasilla also has its own zoning regulations. Much of Wasilla is mixed-use in character, with commercial and residential uses in close proximity.

Mat-Su Borough outside city limits: This is where things get complex. The borough itself has adopted zoning in some areas — particularly around the Knik Arm corridor, Lakes and Trails area, and certain agricultural protection zones — but large swaths of the borough, particularly in outlying areas, have no formal zoning.

What “Unzoned” Means in the Mat-Su

In unzoned areas of the Mat-Su Borough, there is no land use ordinance controlling whether a neighbor can operate a commercial business, keep livestock, run a gravel pit, or build a large structure next to your home. This cuts both ways:

Freedom you gain: You can typically use your property in ways that would be restricted in a municipality — a home-based business, agricultural use, outbuildings, accessory dwelling units, and recreational equipment storage.

Protection you lose: You cannot object to neighboring land uses on zoning grounds. Your neighbor can legally operate a truck repair shop, keep chickens and pigs, or run a gravel extraction operation if the use is otherwise legal.

The Mat-Su has addressed some of these issues through:

Platting and subdivision covenants: Many Mat-Su subdivisions have deed restrictions that provide private regulation of land use even without zoning. These are enforceable through civil action.
Nuisance ordinances: State and borough nuisance laws apply everywhere
Building codes: The Borough has adopted building code requirements even in unzoned areas
Agricultural buffering ordinances

Before buying in an unzoned area, review any applicable subdivision plat for CC&Rs (covenants, conditions and restrictions) and talk to neighbors about current land use in the vicinity.

The Mat-Su Borough Title Plot Plan Requirement

When purchasing a home in the Mat-Su Borough, lenders typically require a title commitment and may require a boundary survey or plot plan to confirm the legal description matches the physical property. This is especially important in rural Mat-Su because:

Many older parcels have irregular legal descriptions (metes and bounds)
Encroachments from neighboring properties or roads are not uncommon
Well and septic setback requirements depend on accurately knowing property lines

A survey is not always required for every purchase, but budget for this possibility on rural properties.

Mat-Su Agricultural Zoning and the Farming Heritage

The Mat-Su Valley has deep agricultural roots — the original Palmer Colony farmsteads established in the 1930s form part of the borough’s identity. The borough has designated Agricultural Protection Districts in some areas that restrict subdivision and non-agricultural development.

If you’re buying near these zones or on agricultural land, verify:

Whether the property is in an agricultural protection area
What rights-of-way or easements for agricultural activities may affect the land
Whether surrounding agricultural operations could affect residential use (noise, dust, odor, equipment traffic)

How Zoning Affects Financing in the Mat-Su

Lenders and appraisers do factor zoning and land use into their underwriting decisions for Mat-Su properties:

Mixed-use areas: A home located adjacent to commercial or industrial land use may face scrutiny in the appraisal regarding marketability and value.

Agricultural/commercial mix: If a property is part of a larger tract used for agricultural or commercial purposes, classification as residential for loan purposes must be clearly established.

Unpermitted structures: Outbuildings and additions without permits are common in rural Mat-Su. Lenders and appraisers must evaluate whether unpermitted structures affect value — and FHA/VA appraisers flag unpermitted additions as required conditions in some cases.

Mobile and manufactured homes: Many Mat-Su rural parcels have manufactured homes. Financing these requires that they meet HUD standards and are properly affixed to a permanent foundation.

Due Diligence Checklist for Mat-Su Real Estate Purchases

Before making an offer in the Mat-Su:

Check the borough GIS mapping tool to confirm zoning status (zoned or unzoned)
Review plat documents for subdivision covenants
Visit the property at different times of day — observe neighboring land use
Confirm well location, setbacks, and water test results
Confirm septic system type, age, and last inspection date
Check for any recorded easements (utility, road, conservation)
Verify building permit history for all structures
Confirm driveway access to a maintained road (borough-maintained vs. private road maintenance)

Buying land or a home in the Mat-Su Valley? Premier Mortgage (NMLS# 1168048) works with buyers on Mat-Su rural purchases, including manufactured homes and rural property financing.

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Frequently Asked Questions

Is most of the Mat-Su Borough unzoned?

Large portions of the Mat-Su Borough outside the cities of Palmer and Wasilla are unzoned or only partially regulated for land use. The borough has zoned specific areas including some residential corridors, agricultural protection zones, and commercial nodes, but rural parcels far from city limits frequently have no formal zoning.

Can my neighbor run a business in an unzoned Mat-Su area?

Yes, in many cases. Without zoning to restrict commercial use, neighbors in unzoned Mat-Su areas can operate home-based businesses, agricultural operations, and some commercial activities as long as state and borough nuisance and environmental laws are followed. Subdivision covenants (CC&Rs) may restrict this in platted subdivisions. Review the plat documents before purchasing.

Do I need a survey to buy a Mat-Su property?

Surveys are not universally required, but they are strongly recommended for rural and larger parcels, properties with shared driveways or access easements, or any parcel where the legal description is complex. Lenders may require a survey or plot plan for rural properties. Title insurance companies may also require surveys for certain properties.

How does Mat-Su zoning affect mortgage approval?

Lenders evaluate land use and zoning during appraisal. Properties in unzoned areas with mixed neighboring uses may face closer appraisal scrutiny for marketability. Manufactured homes, agricultural parcels, and properties with unpermitted structures receive additional underwriting review. Working with a lender experienced in Mat-Su rural purchases avoids surprises.

What are Mat-Su Borough CC&Rs and how do I find them?

CC&Rs (Covenants, Conditions, and Restrictions) are recorded with subdivision plats and run with the land. They provide private-law land use regulation in lieu of zoning. Find CC&Rs through the Matanuska-Susitna Borough’s online recording database or by reviewing your title commitment, which should identify recorded restrictions on the property.