Check your garage's fire separation
Annual · typically July
Why it matters
An attached garage is the highest-fire-risk room you own, and the builders knew it: the shared wall and ceiling got thicker drywall, and the door into the house is supposed to be solid and self-closing. That assembly is a timer — designed to hold a garage fire out of the house long enough for everyone to leave. The annual check is about finding where the timer's been quietly disabled.
What skipping it costs
$0–$100,000
Garages are where houses keep their fire starters — fuel, solvents, chargers, the car itself. The wall and door between garage and house are built to buy you roughly 20 minutes of escape time. Every hole punched for a cable and every propped-open door hands those minutes back.
Two ways to get it done
Do it yourself
You'll need: Flashlight, Fire-rated caulk or foam for penetrations (~$10), Self-closing hinges if missing (~$15–$25/pair).
- The door: close it and let go. It should swing itself shut and latch. If it doesn't, adjust or replace the self-closing hinges — $20 and a screwdriver. A propped-open house door is the whole system defeated; if someone's propping it, solve the airflow or convenience problem another way.
- No pet doors, no cut-throughs in this door or wall. Ever. A pet door through the fire separation is a hole with a flap.
- The ceiling and shared wall: flashlight pass for penetrations — cable runs, plumbing holes, the missing chunk from a past project. Foam or caulk them with fire-rated material (the label says so).
- Fuel discipline: gasoline, propane, and solvents live in a detached shed if you have one, or at minimum in approved containers far from the water heater and any outlets. Propane tanks never live indoors — garage included.
- Charger corner: e-bike, scooter, and big tool batteries charge on a hard surface, off the exit path, and not overnight unattended. Cheap replacement batteries from nowhere-brands are where the fires come from — buy the maker's pack.
- The car itself: never idle it in the garage with the door down, even "for a minute" — that's the CO card's territory, and it holds even for a quick warm-up.
Hire it out
$150–$350National fair range — local labor moves this number.
A handyman visit runs $150–$350 to rehang a self-closer, patch penetrations properly, and re-drywall any real damage — this is honest small-job territory, priced by the hour plus materials.
Where it inflates: the "fire-rated everything" pitch. Your garage needs its code-minimum separation intact — it does not need a commercial fire door, sprinklers, or a finishing package. Intact drywall, a solid self-closing door, and grown-up fuel storage is the whole assignment.
Ask the tech
- Is the house door out of the garage rated (or solid-core) and self-closing, and does it actually latch on its own?
- Can you patch the ceiling and wall penetrations with fire-rated material, not just any foam?
- Anything stored in here you'd move if it were your house?
Red flags you're being upsold
- A full fire-rated door replacement pitch when the existing solid door needs $20 of hinges and a latch adjustment.
- Fear-selling $2,000 'battery safety cabinets' for a household's worth of tool packs — a metal shelf away from the door and off the charger overnight covers most homes.
- Any quote that treats code-minimum separation as an 'upgrade opportunity' to five-figure garage finishing.
Second opinion time: Drywall/firewall repair quotes over $1,000 — patching penetrations is handyman-priced work.
The call
DIY the walk-through and the easy fixes; hire the drywall patching if there's real damage. Thirty minutes, once a year, mostly housekeeping.