Bathroom Remodel Permits and Inspections in Columbia, MO

Naugle Co Homebuilding & Remodeling has built and remodeled homes in Columbia since 1954. Most bathroom remodels here need a permit, and the first question homeowners ask is whether that will slow the job down. It rarely does. What causes delay is finding out about a permit halfway through, after a wall is already open.

Missouri does not issue a statewide general contractor license, so the rules that matter are set locally. In Columbia, the contractor applying for a permit needs a City of Columbia contractor license, and the trades working under that permit need the relevant master trade license. Any construction business with employees also carries workers compensation insurance.

That structure puts a question on the homeowner: who is actually licensed to do each part of this job? On a bathroom, plumbing and electrical are almost always involved, which is why permits come up on projects that look purely cosmetic from the doorway.

When a Bathroom Remodel Needs a Permit

The City treats this as a question about systems rather than rooms. A trade permit applies when an electrical, plumbing, gas or mechanical system is installed, altered, repaired, removed or replaced. Straight fixture replacement is the main exception.

• Moving a toilet, sink or shower drain: the drain, waste and vent system is being altered, so a plumbing permit applies.
• Adding or relocating circuits, outlets or an exhaust fan: an electrical permit applies, and GFCI protection is checked at inspection.
• Removing or altering a wall: a building permit applies if the wall carries load or the room layout changes.
• Replacing a tub with a curbless or walk-in shower: usually permitted, since drain position and floor framing normally change.
• Swapping a vanity, toilet or faucet in place: generally exempt, as long as nothing moves and no new supply or waste lines are run.
• Tile, paint, mirrors and accessories: no permit, though the work behind them may well have needed one.

Codes and thresholds are revised periodically, so confirm the current requirements for your project with the City of Columbia Building and Site Development division before demolition. A permit pulled at the start is routine. One pulled after an inspector notices open work is not.

How Inspections Shape the Schedule

Inspections land at the points where work is about to be covered up, which is why they drive the sequence of a remodel more than the calendar does.

On a typical bathroom, a rough-in inspection follows the plumbing and electrical work but comes before insulation, drywall or backer board. A final inspection follows once fixtures are set and the room is finished. The job pauses at each of those points, so a realistic schedule is built around them rather than around squeezing them in.

We pull the permits and schedule the inspections on your behalf. Our in-house design team works from drawings that already account for what will be inspected, which keeps a rough-in from turning into a second round of work.

What Inspectors Find in Older Columbia Houses

A large share of Columbia housing predates the 1970s, and a bathroom in one of those houses usually holds work from several eras at once. Galvanized supply lines, cast iron waste stacks and circuits that were extended rather than replaced all tend to surface once the wall comes down.

This is where a permitted job earns its keep. An inspection that flags an unsafe splice or a drain that no longer meets code has found something that was going to fail eventually. Correcting it while the wall is open costs a fraction of correcting it later.

It can matter at resale too. Unpermitted bathroom work is one of the things that surfaces during a sale, and a buyer's inspector is a harder audience than a city one.

Talk to Naugle Co About Your Bathroom Remodel

Permits are one part of a larger process. See our full bathroom remodeling services for what a project involves, or contact us to talk yours through. Naugle Co Homebuilding & Remodeling is a second and third generation family business, working in Columbia since 1954. Call (573) 474-9444 for a free estimate.