Safe rooms for new construction and tornado rebuilds

We design and build tornado safe rooms into new homes and homes being rebuilt after the May 16, 2025 tornado. When the walls are open, a closet, pantry, laundry or bathroom can be built as a safe room to FEMA P-361 and ICC 500 criteria — reinforced walls and ceiling, a tested door, and an anchored foundation — with far less disruption than adding one later. For homes being rebuilt in the City of St. Louis, Executive Order 90 directs city departments to expedite permits for tornado-damaged property. The time to decide is before the framing goes up.

Site visit before any price · Free itemized written quotes · Test reports and door labels with every unit · Permits named on the quote

Why now is the right time

For rebuilds. A home being rebuilt or substantially repaired after the 2025 tornado is a home with its walls and foundation accessible. Adding a safe room during the rebuild is design and materials, not demolition.

For new homes. A safe room in the plan costs less and looks better than a steel box added to a finished garage.

Where the safe room goes

The best rooms are ones you'd build anyway:

• Walk-in closet — the classic choice; it's interior, small and used daily.
• Pantry or laundry — near the kitchen, reachable in seconds.
• Interior bathroom — has plumbing, which is useful for a long wait; harder to reinforce around fixtures.
• Basement corner — for basement homes, with the water caveats in our flood guide.

Wherever it goes, it has to be reachable by everyone in the house quickly, including anyone with limited mobility.

What makes it a safe room and not a closet

• Walls of reinforced concrete, concrete-filled masonry, insulated concrete forms, or engineered steel-and-wood assemblies tested to the criteria.
• A ceiling designed for debris impact and uplift, not just the floor above.
• A foundation or anchorage that holds the room down — a separate footing or a thickened, reinforced slab section.
• A tested, labeled door and hardware. FEMA requires safe room doors to be "tested, listed, and labeled."
• Ventilation to the standard.
• Design to FEMA P-361 / P-320 criteria and ICC 500, with documentation.

Codes and permits

Model residential codes reference ICC 500 for storm shelters; building one is your choice. In practice, a designed-in safe room goes on the building permit drawings and is inspected like the rest of the house.

• City of St. Louis: 2018 International Residential Code. For tornado-damaged properties, Executive Order 90 (signed August 25, 2025) directs the Building Commissioner and Cultural Resources Office to expedite permits, with one year of flexibility in historic districts and three-year extensions for permits and approvals. Check the City's STL Recovers hub for current programs.
• Unincorporated St. Charles County: its 2021 residential code requires a permit for every storm shelter — the small-structure exemption explicitly excludes them.
• St. Louis County and its municipalities: rules vary; see permits.

Builder's checklist

Bring this to your builder or architect:

1. Mark the safe room on the floor plan before framing drawings are finished.
2. Confirm the design basis: FEMA P-320 prescriptive plan, FEMA P-361 criteria, or an engineer's design to ICC 500.
3. Size it at 3 square feet per person for a home tornado safe room (FEMA), plus room for wheelchairs, pets and guests.
4. Detail the foundation: footing or thickened slab, reinforcing, anchors.
5. Specify a door assembly that's been tested and labeled; order it early.
6. Plan ventilation, lighting and an outlet.
7. Keep plumbing and ductwork from penetrating the walls and ceiling except as designed.
8. Put it on the permit drawings and schedule the inspection.
9. Keep the documentation — test reports, door labels, inspection — with the house records.

What it costs

A built-in safe room adds the cost of reinforced walls, a ceiling, a tested door and foundation work. HomeGuide's national guide (written February 2024) puts installed safe rooms at $4,500–$14,000. The added cost is lowest when the room replaces framing you'd have built anyway. Those numbers come from published sources, not from us. See the cost guide.

Money for rebuilds

Missouri offers homeowners no safe room grant or rebate. The federal disaster declaration for the 2025 storms (FEMA-4877-DR) funded Individual and Public Assistance; Hazard Mitigation money in Missouri goes through local governments and other eligible applicants, not directly to households. Our grants, rebates and financing guide explains what exists and how a city or county could create a program.

How we work with your builder

Depending on the design, the safe room can be built as part of your builder's project to an engineer's or FEMA's prescriptive design, or a tested steel safe room can be installed for the builder to frame around. Your quote says which, and who does what.

Our installation crew is a Missouri construction contractor that installs storm shelters as a dedicated part of its business.

For the full set of shelter options and how they compare, see the complete St. Louis storm shelter guide; for the City's recovery orders and the tornado record, see our page on the 2025 tornado.

Frequently asked questions

Can any closet become a safe room? Only if it's built as one — reinforced walls and ceiling, foundation, tested door. A regular closet isn't a shelter.

Is a safe room required in new homes? No. The residential code sets the standard a shelter must meet if you build one; it doesn't require one.

Does Executive Order 90 pay for a safe room? No. It speeds permits for tornado-damaged property in the City; it doesn't fund construction.

Can I add a safe room to a rebuild that's already framed? Often, if walls and the slab are still accessible. Earlier is easier.

Get a quote

Send the floor plan if you have one, and tell us what stage the build or rebuild has reached. Get a quote.