How to Build Your Own Home in Billings, MT: A Local's Guide

Last reviewed and updated October 14, 2026

Is it cheaper to build or buy a home in Billings, MT? For most buyers right now, buying a resale home in Billings costs less than building: Billings homes sold for a median $385,000 from October 2025 through September 2026 (Billings MLS), while the national average cost just to construct a typical new single-family home was about $162 per square foot in NAHB's 2024 survey, before land.

Here is what I am seeing on the ground: buyers are leaning toward resale because building costs more. In my work as a Real Estate Broker with The Morales Group at Engel & Völkers Billings, I still help clients weigh a build, because the right lot and floor plan can be worth the premium. This guide lays out the numbers and steps so you can make that call with real figures.

What does it cost to build a house in Billings?

The cost to build in Billings depends on the lot, the size, the finish level and the builder, so the only number you can plan on is an itemized bid for your project. As a national reference, the National Association of Home Builders' Cost of Constructing a Home 2024 survey (published January 20, 2025) put the average construction cost of a typical new single-family home at $428,215, or about $162 per square foot for 2,647 finished square feet.

Those are national averages from 41 builders, not Billings figures. In the same survey, construction was 64.4% of the average sales price and the finished lot was 13.7%, which is a reminder that land and site work sit on top of the per-square-foot number.

What is usually left out of a builder's per-square-foot price?

• The lot itself
• Site work: excavation, grading, drainage and the driveway
• Utility connections, or a well and septic system outside city service
• Design, engineering, permit and inspection fees
• Landscaping, window coverings and some appliances
• Construction loan interest and fees
• A contingency for overruns

Ask every builder for a written scope that says what is and is not included before you compare bids.

Is it cheaper to build or buy in Billings?

Buying is usually cheaper in Billings when a resale home already meets your needs, because you pay one price for a finished house, lot, utilities and landscaping. Single-family homes in Billings sold for a median $396,000 across 1,627 sales from October 2025 through September 2026, according to the Billings MLS. Compare a builder's full project cost, including land and site work, against what finished homes sell for in the area where you want to build:

Source: Billings MLS, residential sales closed October 1, 2025 through September 30, 2026. These medians mix new and older homes. Full detail is in my Billings real estate market report, and you can see what specific price points buy in the average cost of a home in Billings.

What do new homes in Billings sell for?

New homes in Billings sell for more than the overall market: the 430 homes built in 2024 or later that sold as new construction from October 25, 2024 to October 9, 2026 closed at a median $449,809, and new single-family homes at a median $476,900 across 339 sales (Billings MLS, homes built 2024 or later and sold as new construction, closings October 25, 2024 to October 9, 2026). That premium over the overall Billings median lines up with what I described above about buyers leaning toward resale.

Source: Billings MLS, homes built 2024 or later and sold as new construction, closings October 25, 2024 to October 9, 2026; my analysis of the export, excluding likely resales. Price per square foot here is the sale price of the finished home and lot, not a construction cost.

The same data shows how builders sell: 72% of new builds closed at or above their original list price, and 40% closed with seller concessions such as rate buy-downs, closing-cost credits or upgrade credits, with a median concession of $10,000 when one was given. A buyer comparing a finished new home with a custom build should ask about concessions, because that is where builders tend to negotiate.

Building can still make sense when no resale home has the layout, lot or features you need, or when you plan to stay long enough that new systems and a design built for you matter more than the upfront premium. If you want new construction without the custom process, look at new home developments in Billings.

What should you check before buying a lot near Billings?

Before buying a lot near Billings, confirm zoning, legal access, utility service and soil and drainage, because each one changes what you can build and what the site work will cost. The biggest cost swing is utilities: a lot with city water and sewer at the property line is a different project from a parcel that needs a well and a septic system.

• Zoning and covenants: confirm the zoning allows your plan and read any recorded covenants.
• Utilities: confirm water, sewer, power and gas availability and connection costs in writing.
• Well and septic: outside city service, budget for a well, a septic system and the permits for both. My guide to water and septic before buying acreage near Billings covers what to test.
• Access and floodplain: confirm legal road access and whether any part of the lot is in a mapped floodplain.

How do building permits work in Billings?

Inside Billings city limits, building permits run through the City of Billings Web Portal (cityview.billingsmt.gov), where you can apply for building permits, estimate fees, upload submittals and check the status of inspections. The City of Billings Building Division lists an initial plan review time of 4 to 7 business days for residential plans (single-family and duplex), counted once a complete plan is submitted and any special issues such as variances or subdivisions have been addressed (Building Division FAQ, read October 14, 2026). Incomplete submissions and revisions add time, so confirm current timing with the Building Division before you set a construction start date.

Outside city limits, check with Yellowstone County planning and zoning before you design, and plan for well and septic permits where the lot is not on city service. Rules differ between the city, the county and the towns around Billings, so confirm the requirements for the specific parcel.

How does Billings weather affect a build schedule?

Billings winters affect when you can pour foundations and do exterior work, so the season you break ground in shapes the whole schedule. Ask each builder for a written schedule that shows how they handle winter months. For what Billings winters actually look like, see weather in Billings for homebuyers.

How do you choose a custom home builder in Billings?

Choose a Billings builder by checking recent finished homes, references from recent clients, and how clearly the bid spells out what is included. Specifically:

• Confirm the builder's Montana construction contractor registration and insurance.
• Tour homes the builder finished in the last few years and talk to those owners.
• Get an itemized bid and a written schedule, and ask how change orders are priced.
• Ask what the warranty covers and for how long, in writing.

Frequently asked questions

Is it cheaper to buy or build a house in Billings?

Buying a resale home is usually cheaper in Billings when one meets your needs. Billings homes sold for a median $385,000 from October 2025 through September 2026 (Billings MLS), while building adds land, site work and construction costs that averaged about $162 per square foot nationally for construction alone in NAHB's 2024 survey.

Is $300,000 enough to build a house in Billings?

At the national average construction cost of about $162 per square foot in NAHB's 2024 survey, $300,000 covers roughly 1,850 square feet of construction before the lot, site work, utilities and fees. Billings bids vary, so get itemized bids for your plan and lot before you set a budget.

Do I need a permit to build a home in Billings?

Inside Billings city limits, new homes need City of Billings building permits, which you can apply for through the City of Billings Web Portal. Outside city limits, check with Yellowstone County planning and zoning and plan for well and septic permits where the lot is not on city service.

Do I need a permit to build a shop or garage in Yellowstone County?

It depends on where the parcel is. Inside Billings city limits, check with the City of Billings Building Division. Outside the city, check zoning with Yellowstone County planning before you build, and confirm any setback, access or septic requirements for the specific parcel.

If you are relocating and deciding between building and buying, start with my guide to moving to Billings, then download the Billings relocation guide.

This article provides general real estate information and is not legal, architectural, engineering or zoning advice. Zoning and development feasibility depend on the specific property, the current regulations, permits, utilities and private restrictions. Confirm an intended use with the City of Billings Planning Division and the appropriate licensed professionals before relying on it in a purchase or development decision.

Gene Hauck is a Real Estate Broker, REALTOR® with The Morales Group at Engel & Völkers Billings, 1921 1st Ave N, Billings, MT 59101. Montana license RRE-BRO-LIC-135399. 406-861-4844.