Code is the minimum. Claim files are the reality check. This cheat sheet combines both. It is the list I wish every homeowner had in their hand before the inspector left and before the machines were pushed into place. Print it, tape it inside the laundry room cabinet, and actually use it.
I am not a code official. Requirements vary by jurisdiction. Always confirm with your local building department. What follows is the set of items that repeatedly appeared in the failures I adjusted and in the successful rooms that never generated a claim.
Water Supply and Shut-Offs
Accessible shut-off valves for both hot and cold within sight of the machines and reachable without moving the appliances.
Valves that actually turn. Test them twice a year.
Braided stainless-steel supply hoses or hard-piped connections. No rubber.
Optional but strongly recommended: automatic shut-off valve tied to a floor water sensor.
Drainage and Overflow Protection
Standpipe at the correct height with a proper P-trap and air gap.
Floor drain in the laundry area, ideally with the finished floor pitched toward it.
Drain pan under the washer that either drains to the floor drain or is monitored by a sensor.
Utility sink drain tied in correctly so it cannot back up into the machines or the floor.
Dryer Venting
Rigid or semi-rigid metal duct only. No foil or plastic.
Total developed length as short as practical; minimize elbows. Prefer two 45s over one 90.
Termination to the exterior with a proper damper hood. No screens that clog with lint.
Entire run accessible for cleaning without major disassembly.
Annual full cleaning from dryer outlet to exterior hood.
Electrical and Clearances
Dedicated circuits sized for the machines according to manufacturer and local code.
Proper receptacle types and GFCI protection where required.
Manufacturer-required clearances around the machines for service and airflow.
Lighting that meets basic illumination levels so the work area is actually usable.
Walls, Floor, and Moisture
Floor surface that can tolerate water without immediate structural damage (tile, vinyl, sealed concrete, etc.).
Moisture-resistant drywall or equivalent in areas subject to regular humidity or splash, even if not strictly required.
Bottom edge of drywall detailed to reduce wicking if water reaches the floor.
Insulation and vapor control on exterior or foundation walls so condensation does not form behind the finish.
Combustion and Makeup Air (If Applicable)
If a gas dryer is present, confirm proper combustion air and venting per manufacturer and code.
No storage of flammable liquids in the immediate laundry area.
The Claim-File Additions That Code Often Misses
These items are rarely mandatory yet repeatedly prevented or reduced losses in the files I handled:
Water sensor with audible or phone alert even if no automatic valve is installed.
Easy visual access to all hose connections and the drain pan.
A simple written maintenance log taped inside a cabinet door (hose replacement dates, vent cleaning dates, valve tests).
Motion or vacancy lighting so the room is never left in the dark during use.
How to Use This Sheet
Before renovation: walk the existing space with the list and note every gap.
During design: make sure the plans address every line.
At final inspection: verify the installed work against the list, not just against the minimum code checklist.
Twice a year: use the seasonal maintenance list that pairs with this one.
Final Note From the Adjuster’s Side
Most laundry-room claims I wrote were not caused by exotic failures. They were caused by ordinary components that had been installed to the minimum standard and then ignored. The rooms that never appeared in my files were the ones where someone treated the mechanical systems as seriously as the finishes.
Code keeps you legal. This cheat sheet is meant to help keep you dry and fire-free. Print it. Use it. Update it when local requirements change.
A room you hate to be in is a room you’ll never take care of. A room whose critical systems are visible, reachable, and on a simple maintenance schedule is a room you can actually take care of—for years.
