Modular Homes in Montana: Builders, Prices, and State Rules (2026)

A factory built home in Montana costs roughly $55 to $140 per square foot installed, depending on whether you buy a manufactured home or a true modular one. Most of what sells in the state is manufactured housing built to the federal HUD code, not modular housing built to the International Residential Code. That single distinction decides how you finance the home, what foundation it sits on, and how well it holds value. Montana adds two more variables that buyers in flatter states never think about: the snow load your roof has to carry, and whether your parcel sits in a wildfire zone that insurers have started to avoid. This guide names the builders, gives real Montana price ranges, and walks through the codes, climate, and loans that matter before you sign anything.

Most pages that rank for this search belong to a dealer or a factory selling its own inventory. This one does not. Prefab Market does not take placement fees from any builder named below.

What modular homes cost in Montana

A manufactured home in Montana runs about $55 to $80 per square foot installed. A true IRC modular home costs more, closer to $90 to $140 per square foot, because it is built to the same standard as a site built house and has to sit on a permanent foundation.

Home type	Cost per square foot, installed	Worked example
Manufactured (HUD code)	$55 to $80	A 1,200 sq ft home from about $90,000 to $145,000 with basic site work
Modular (IRC code)	$90 to $140	A 1,500 sq ft home from about $135,000 to $210,000
Panelized mountain style	$100 to $150 or more	Higher because of cold climate specification

For context, recent Montana cost estimates put a new manufactured home near $190,000, a new modular home near $262,000, and a comparable site built home around $407,000. So a modular home lands well below stick built construction, and a manufactured home well below that again. See our national modular home price ranges for how Montana compares to the rest of the country.

The per square foot figure is only the home. On rural Montana parcels, the site work is where budgets drift, and it often costs more than people expect:

• Land clearing and grading: $5,000 to $15,000
• Foundation: $8,000 to $35,000 or more for a full permanent foundation
• Septic system: $3,500 to $15,000 for a conventional system, $10,000 to $20,000 or more for an aerobic or alternative one
• Well: $10,000 to $30,000 or more, depending on how deep the drillers have to go
• Utility connections: $6,500 to $30,000 or more, with the high end for lots a long way from existing power lines

On raw land, those add ons easily reach $40,000 to $100,000, which on a smaller home can exceed the cost of the house itself. A home leaving the KIT factory and set on a lot near Billings costs less to deliver than the same home trucked into a remote parcel in the northwest corner of the state. Distance from the factory is a line item, not a rounding error, and it splits the state in two: buyers in eastern Montana around Billings draw on different nearby dealers than buyers in the west around Missoula and Kalispell.

Modular and manufactured homes are not the same thing

Montana dealers use the two words loosely. The state and your lender do not. A modular home is built in sections at a factory to the International Residential Code, the same code as a stick built house, then trucked to the site and assembled on a permanent foundation. Once it is set, Montana treats it as real property for financing, taxes, and zoning, and it appreciates like any other house on owned land.

A manufactured home is built on a steel chassis to the federal HUD code, a national standard that does not change from state to state, and carries a HUD data plate. If it stays on a chassis and is titled as personal property, you finance it with a chattel loan. If it goes on a permanent foundation and is titled as real estate, it qualifies for the same mortgages a modular home does. The term mobile home only applies to units built before 1976 under the old rules. Do not let a salesperson use it for a new home.

The practical gap is money. A chattel loan on a manufactured home typically runs a few percentage points above a conventional mortgage and pays off over a shorter term. Montana’s Department of Labor and Industry administers both home types: its Building Codes Program issues factory built building permits for modular homes and runs the HUD 309 installation inspections for manufactured homes. Read the full difference between modular and manufactured homes before you commit, and see how Montana fits the wider picture of modular homes across the United States.

Modular and manufactured home builders in Montana

Montana has no large modular factory of its own. It is served by manufacturers in Idaho and Nebraska, a network of retail dealers, and one local specialist in mountain style panelized homes. The table below covers the builders and dealers that show up across the state, with the product type each one actually makes or sells.

Builder	Type	Where they serve	Notes
KIT Custom Homebuilders	Manufacturer, modular and manufactured	Statewide through dealers, built in Caldwell, Idaho	The most widely distributed maker in Montana, with five authorized dealers from Missoula to Helena to Billings.
Great Homes Inc	Retail dealer	Missoula	Sells KIT manufactured homes. Ranks first organically for this search.
River Bend Homes	Retail dealer	Billings, Belgrade, Helena	KIT sales centers carrying manufactured, modular, and tiny homes. Also serves Idaho.
Patty Seaman Homes	Retail dealer	Kalispell	One of the larger manufactured and modular dealers in northwest Montana.
BonnaVilla	Manufacturer, modular and manufactured	Statewide through retailers, built in Aurora, Nebraska	Offers both home types across more than 100 models. Sold in Montana through Basin Creek Homes in Butte and others.
Majestic Homes Inc	Retail dealer	Montana, South Dakota, Wyoming, North Dakota	Sells modular and manufactured homes.
Stratford Building Corporation	Manufacturer, IRC modular	Montana, Idaho, Wyoming, Washington, Alaska, Oregon, built in Rathdrum, Idaho	A true IRC modular maker, established 1994, with an ADU line of five floor plans from 450 to 840 sq ft.
Whisper Creek Homes	Panelized and mountain specialist	Mountain Montana, based in Hamilton	Panelized log and timber frame systems, 45 models from 252 to 6,352 sq ft. Built for cold climate winters, assembled on site by a general contractor. Not a standard modular maker.

One name to understand correctly. DCStructures ranks near the top for Montana modular and prefab searches, but it builds timber frame barn kits, not modular homes. The $40 to $84 per square foot figure on its Montana page covers the structural kit only: engineered plans, prefabricated framing lumber, windows, doors, siding, and hardware. By the company’s own account the complete turnkey cost runs three to five times that, which works out to roughly $120 to $420 per square foot once a contractor pours the foundation and assembles and finishes the building. These are post and beam structures put up on site from a kit, not HUD code or IRC modular homes, and they do not qualify for modular financing.

Most dealers quote on request rather than list prices, so the fastest way to compare is to send the same brief, square footage, bedroom count, finish level, and your county, to two or three of them at once. Then check whether each quote is for a manufactured or a modular home, because that changes the loan you can use. Buyers near the Idaho line have more options if they also look at the dealers on our Idaho guide, since River Bend Homes and Stratford Building Corporation serve both states.

Montana building codes and where you can place a home

The Building Codes Program inside Montana’s Department of Labor and Industry regulates factory built homes. Modular homes are built to the 2021 International Residential Code, which Montana adopted in June 2022, and the state plans to move to the 2024 family of codes in mid 2026. A modular home is inspected to that code, and once it is on a permanent foundation it is treated as a site built house for every official purpose. The state is also drafting in the newer code cycle, so confirm the current edition with your builder.

Manufactured homes answer to the federal HUD code rather than the state code. When a manufactured home is installed in Montana, the licensed installer has to certify the work under 24 CFR Part 3286 and notify the State Building Codes Bureau, which sends an inspector before anyone moves in. No factory built building can be sold in Montana unless its components meet Title 50, Chapter 60 of the Montana Code Annotated. The program takes questions at [email protected] or (406) 841-2056. For the full federal picture, read our explainer on the HUD code, and the guide to permits and zoning before you choose a lot.

Zoning is local, and Montana is broadly permissive. A large share of the state’s unincorporated rural land has no local zoning at all, so state rules apply and manufactured homes are generally allowed. Where local zoning exists, agricultural parcels usually permit them, though some residential zones do not, and some jurisdictions set minimum lot sizes or appearance standards such as a minimum width or roof pitch. Faster growing areas like Bozeman in Gallatin County run stricter frameworks than the eastern plains counties, where regulation is minimal. With 56 counties and very different rules across them, confirm the zoning classification and any deed restrictions with the county planning department before you buy.

What Montana’s climate adds to the price

Two things separate a Montana build from a build in a milder state, and both reach the bill. The first is snow. Montana law sets a minimum design roof snow load of 30 pounds per square foot statewide, but 24 of the 56 counties, among them Flathead, Gallatin, and Beaverhead, are classed as Case Study zones where a licensed engineer has to work out the load for each specific site. In parts of northwest Montana that figure can run past 60 to 70 pounds per square foot. The HUD code sets its own regional roof load zones for manufactured homes, so the single most important question to ask a dealer is whether the model you want is rated for your county’s load. In a Case Study county that is not optional. Montana State University publishes a free Ground Snow Load Finder at snowload.montana.edu that returns the ground load for any parcel by latitude and longitude.

The second is fire. Montana has no mandatory statewide wildfire building code, only a voluntary standard local governments can adopt. But the state ranks among the highest in the country for homes in the Wildland Urban Interface, and western Montana, the Flathead Valley, the Bitterroot Valley, and the Missoula area, carries serious exposure. The cost shows up in insurance rather than construction. Through 2025 and 2026, insurers have been declining cover or raising premiums sharply in high risk Montana fire zones, sometimes by more than the cost of the mitigation work that would reduce the risk. Before you commit to a parcel in a fire prone area, get an insurance quote in writing. It can change the math more than the price of the home.

Rural infrastructure is the third cost the climate compounds. Montana has one of the lowest population densities in the country, and many parcels have no existing utilities. Western Montana adds steeper foundation work and higher snow loads on top. Eastern Montana around Billings offers flatter ground and easier site prep, but utility runs to a remote lot can still be long and expensive. Read our guide to foundation types before you settle on a site, because the right foundation depends on both the frost depth and the home you are buying.

How to finance a modular or manufactured home in Montana

A modular home on a permanent foundation is financed like any other house. It qualifies for conventional Fannie Mae and Freddie Mac loans, FHA, VA, and USDA. A manufactured home reaches the same options only when it is on a permanent foundation and titled as real property. Off the foundation and titled as personal property, it falls to a chattel loan with a higher rate and a shorter term. Start with the overview of financing options for modular homes, then match it to your situation.

The programs that matter most for Montana:

• USDA. No down payment in eligible rural areas, which cover most of Montana outside Billings, Missoula, Bozeman, and Great Falls. The Guaranteed loan runs through approved lenders for moderate income buyers. The Direct loan carries a deeper subsidy for low and very low income families, with a rate of 5.125 percent for qualifying borrowers as of June 2026. The USDA manufactured home program operates in Montana, and a qualifying home must be new, on a permanent foundation, and titled as real estate. See the detail on a USDA loan for a modular home.
• FHA. Low down payment financing for the home and land together. A manufactured home must be on a permanent foundation, built after 1976, and HUD certified. See FHA loans for manufactured homes.
• VA. No down payment for eligible Montana veterans and service members, on a home that is permanently affixed. See VA loans for manufactured homes.
• Chattel loans. For manufactured homes on leased land or personal property titles. Expect a few points above a mortgage rate and a 15 to 20 year term.

USDA is the differentiator for rural Montana, because so much of the state qualifies as eligible rural land. The catch worth planning for is that USDA, FHA, and VA all require a permanent foundation, which in Montana means digging below the frost line. That is one more reason the foundation line in your budget is rarely small.

Common questions from Montana buyers

How much does a modular home cost in Montana? A true modular home runs about $90 to $140 per square foot installed, so a 1,500 square foot home lands near $135,000 to $210,000 before site work. A manufactured home costs $55 to $80, putting a 1,200 square foot home around $90,000 to $145,000. Rural site work can add $40,000 to $100,000 on top.

Can I put a manufactured home on rural land in Montana? In most of the state, yes. Much of Montana’s rural land has no local zoning, and agricultural parcels usually allow manufactured homes where zoning does exist. Bozeman and other growing areas are stricter, so confirm with the county before buying.

What snow load does my roof need? At least 30 pounds per square foot statewide, but 24 counties are Case Study zones where an engineer sets the site specific figure, and northwest Montana can run past 60 to 70. Confirm the model’s rating with the dealer before you order.

Which loans work for a Montana buyer? Conventional, FHA, VA, and USDA all work for a modular home or a manufactured home on a permanent foundation titled as real estate. Most of rural Montana is USDA eligible. A home on a rented lot or a personal property title is limited to a chattel loan.

Compare floor plans and specs across the Prefab Market directory to set your expectations, then take a shortlist of square footage, bedroom count, finish level, and your county to two or three of the Montana builders above. Ask each one whether the quote is for a manufactured or a modular home, what snow load it is rated for, and which loan it qualifies for. Those three questions save more money than any negotiation.