FAQ
Getting started
Can I tour the factory?
Yes. Our team in the area is small, so give us some notice to set up a tour. Spec homes and a sales office are coming soon, so stay tuned.
How do I talk to someone?
Call 208-970-6904 or send the form and we'll reach out.
How do I get pricing?
Start with our floor plans, then send us the form. Building several units? We offer volume pricing on multi-unit projects, so give us a call.
Where are you located?
Our factory is at 3791 East 49th North, Idaho Falls, Idaho 83401.
How long have you been in business?
Mountain Valley Prefab started in 2021. In 2025, Sven Heistad bought the company, and we've been building the team ever since. Read our story on the About page.
Are you affiliated with Zip Kit Homes?
Yes. Zip Kit Homes is our sister company, and Sven owns both. MVP is building its own team and standing on its own two feet, but we're grateful for everything the Zip Kit team does to support us.
Where we build
Where do you deliver?
Utah, Idaho, Montana and Wyoming. We're working to reach more areas.
What if I'm outside your area?
Check out our sister company, Zip Kit Homes. They ship panelized home kits to many more states.
Do you have dealers or partners?
Our only partner right now is Zip Kit Homes. We're actively looking for partners in other states. Interested in becoming one? Send us the form with your location and experience.
Plans and customizing
Can I customize a plan?
Yes, within what a module allows. At the end of the day, every module has to fit on a truck. Call us to talk through changes. Use your architect or ours: bring your own, or we'll bring one in and handle it behind the scenes.
Do you build fully custom homes?
Not as modular. For a fully custom home, check out our sister company, Zip Kit Homes.
Where can I see the plans?
Every plan has its own page with specs and floor plans. Call us to talk about modifications.
Are these manufactured homes?
No. Our homes are built to the same building codes as site-built homes (IRC and IBC), not the HUD code used for manufactured homes.
Are your homes green?
All-electric, built tight and insulated for mountain winters.
The build
How much is done in the factory?
About 95%. Units arrive finished inside and out. The last 5% happens on your site: excavation and foundation, utility hookups, crawlspace insulation and plumbing, the electrical meter base, fire sprinkler connections, setting the modules, siding and roofing stitch-up where modules meet, and stairs and railings between levels.
What's your lead time?
It depends on the projects already in line. Typically 3 to 4 months after your permit and state approval. Call us to confirm current timing.
What's the inspection process?
In the factory, state-certified or approved third-party inspectors check the work. On site, your local building inspectors handle it, and we coordinate with your building official.
What foundation do you need?
A crawlspace or a basement. Either way, there needs to be access to the utilities underneath.
Who provides the crane?
You do. Our crew sets the modules, and your crane does the heavy lifting.
What does my site need?
Good access for semi-trucks, wide loads and a crane. We'll review your site on satellite maps first, and visit in person when needed.
How do you handle snow and wind?
Every project is engineered for its location, including snow loads, wind and seismic requirements.
Can you be our general contractor?
We don't offer general contracting at this time. Give us a call and we'll talk through your project.
Payment and warranty
Do you work with banks?
Your lender usually works directly with you, and we're happy to talk with your bank if they need anything from us.
What does shipping cost?
It's quoted by distance from our Idaho Falls factory.
Do you offer a warranty?
Yes, a standard 1-year builder's warranty covering manufacturing and quality defects.
Rentals and development
Can I use the units as short-term rentals?
Rules are set by each town and county, so check with your local building and zoning office. Once you know what's allowed, our revenue calculator can help you run the numbers.
How many units can you build for one project?
Anything from a single home to multi-phase projects. Westgroup is 24 units across four phases.