Modular steel bunkers

Build it
one cube
at a time.

Every CUBE Bunker is made of 10 x 10 ft steel cubes that join on any side. Two cubes make a starter shelter; eight make a home for sixteen. Engineered and built in Utah by Styrkholm, installed by a CUBE Bunker dealer near you.

Design yours in 3D Find a dealer
  • 10 x 10ft per cube, outside
  • 2 to 8cubes, or any shape
  • $251,900complete, from
Entry Kitchen Dining Bunks DeconUtilityMedical Bunks

Holm 8, roof off: two bunk rooms, medical, kitchen, bath, utility, decontamination and the entry.

The line

Seven sizes.
One cube.

The number is the cube count. Each model comes in the shapes that fit real lots, and every one can grow.

Bunks EntryHolm 22 cubes · 10 x 20 ft · sleeps 4From $251,900See the Holm 2 Bunks Kitchen EntryHolm 33 cubes · 10 x 30 ft · sleeps 6From $353,100See the Holm 3 Bunks KitchenUtility EntryHolm 44 cubes · 10 x 40 ft · sleeps 8From $429,400See the Holm 4 Kitchen Living Bath Entry BunksHolm 55 cubes · L · sleeps 10From $561,300See the Holm 5 Dining Kitchen Bunks Entry BathUtilityHolm 66 cubes · 20 x 30 ft · sleeps 12From $620,800See the Holm 6 Dining Kitchen Bunks Decon Bath EntryUtilityHolm 77 cubes · 20 x 30 + side room · sleeps 14From $703,300See the Holm 7 Bunks Dining Bunks KitchenMedical EntryUtility DeconHolm 88 cubes · 20 x 40 ft · sleeps 16From $766,800See the Holm 8 CommsUtility Kitchen Decon Dining Entry Bedroom Storage Bunks Food and water BunksMedicalCustomAny number of cubes, any shapePriced cube by cubePlan a custom layout

The Builder

Drag in a room.
It snaps on.

Pick a size, drag rooms onto the 3D model and turn it with your finger. The Builder adds the exterior door to the entry, the emergency exit to the far bunk room, a mate kit at every joint and an end cap on every other wall, then prices it all.

EntryDeconUtilityCommsKitchenDiningLivingBunksBedroomBathMedicalFood and waterStorageWorkshop
Open the 3D Builder
Dining Kitchen Bunks Entry BathUtility

How it is built

From the plant
to your land.

Fabricated under one roof, delivered on a flatbed, set by crane and sealed in days rather than months of pouring concrete on site.

  1. DesignLay out your cubes in the Builder and send it for a quote.
  2. Site visitSoil, water table, depth and access, checked on your land.
  3. EngineeringStamped drawings for your layout and your state.
  4. FabricationEach cube welded, finished and tested in Utah.
  5. Set and sealExcavate, crane each cube in, bolt the mate kits, backfill.
  6. HandoverSystems commissioned and your household trained.
How it works

Compared

28 of 32.

We lined CUBE Bunker up against the best-known shelter makers using their own published pages: price, construction, delivery, installation, systems and buying. CUBE Bunker checks 28 of 32 boxes. The next closest checks 7.

See the comparison
28CUBE Bunker
7Atlas Survival Shelters
7Rising S Company
5American Safe Room

Dealers

Install CUBE Bunkers
in your territory.

We are appointing dealers state by state: excavation and site contractors, builders and preparedness businesses with an installation crew. You get a protected territory, wholesale pricing, training at the Utah plant and the leads this site brings in from your area.

Apply to be a dealer

Already shopping?

Talk to a dealer.

Tell us where the bunker will go. We connect you with the dealer for your area, or Styrkholm handles it directly until one is appointed.

Find a dealer