Your shelter. Built by you.
Built strong enough to outlast anything, and comfortable enough to call home.
Viking Tunnel.
12 ft wide. About 9 ft at the peak. Easy enough to install yourself.
Learn to build it.
Step-by-step videos from Dave.
What does it cost?
Doing it yourself saves the most.
About half
Be your own contractor.
Hire help only for the parts you need. Our videos walk you through the rest.
$100,000+
Hire it all out.
A contractor-built shell around 500 sq ft usually starts here.
Your price depends on size, soil, water table, power, well, and how far you are from a concrete plant. Want something small? A 12 x 20 ft storm shelter is a great DIY project.
Tunnel or Quonset?
Both work. Here’s the difference.
Viking Tunnel
Up to 12 ft wide. About half the cost of a Quonset form. The easiest to put up yourself.
Either one is just the form. The strength comes from spray foam, then shotcrete with steel fiber or rebar, built to an engineer’s specs.
$360 per arch.
Plus shipping. Ships in about 6 weeks.
Nationwide.
Washington State. Remote help worldwide.
About 10 builds. 20 years.
None has ever leaked.
Before you call Dave.
Have these answers ready and we can help fast.
- Do you own the land yet?
- Does it have power, water, and a road big trucks can reach?
- How big do you want to build?
- What’s your budget?
- Have a topo map of the property? Send it.
Preliminary drawings and DIY guidance. Final design must be reviewed and stamped by a licensed engineer for your site and state. The builder is responsible for site conditions, permits and code compliance.