Bathroom Remodel Plumbing in Los Angeles

How much does bathroom remodel plumbing cost in Los Angeles?

Bathroom remodel plumbing in Los Angeles typically lands between $1,500 and $3,500 when fixtures stay put, and $3,500 to $8,000 once drains and supplies move to new spots. Kitchens run a similar spread. Layout drives everything: keeping the toilet where it sits costs a fraction of walking it across the room.

Typical remodel plumbing costs in Los Angeles

These are typical Los Angeles ranges for orientation, not a quote. Every job is priced by its own conditions, so your exact number comes from a free on-site look. Get a free estimate in minutes, or call (818) 421-5290.

Slab houses cost more to change than raised foundations, since every moved drain means saw-cutting concrete. Raised homes across much of the older Valley and the east side give us crawl-space access, which keeps relocation work at the low end of the range.

What does the rough-in stage cover?

Rough-in is everything we pipe while the framing sits open: drain and vent lines, water supplies stubbed to each fixture location, the tub or shower valve, and any gas line for a dryer or a cooktop. None of it shows in the finished room, and all of it decides whether the room works.

Trim-out comes much later in remodel time: setting the toilet, faucets, shower trim, and disposal after paint and tile finish. Between the two sits the inspection that matters most, the top-out, where the inspector checks our piping under test before the walls close.

If the new layout swaps the tub for a walk-in shower, the drain grows from 1.5 to 2 inches and moves to the center of the pan. Our shower and tub installation page breaks down that piece of the job on its own.

Can you move drains, supplies, and vents?

Moving fixtures is the heart of remodel work. A toilet rides a 3-inch drain with its own venting rules, so walking it even four feet means new pipe, a new vent connection, and floor work. Sinks and tubs move more easily, but every trap still needs a vent within a set distance, and that geometry decides what the wall can hide.

Vents are the part homeowners never see coming. An island sink cannot vent up a wall that does not exist, so it needs a loop vent under the cabinet or an air admittance valve where the city allows one. We plan the vent routing before demo, not after, because a vent with nowhere to go can sink a layout.

Supply lines are the easy third. While the walls sit open, many owners of 1950s and 60s Valley houses have us swap the old galvanized branches outright, since a remodel is the cheapest moment for a repipe you will ever get.

Do you work under a general contractor or direct?

About half our remodel jobs come through general contractors who want a plumbing sub that shows up on the scheduled day and passes inspection the first time. We bid from plans, hold our slot in the sequence, and flag conflicts, a joist in the drain path, a vent with no wall to climb, before they cost the project a week.

The other half is direct: homeowners running their own remodel or redoing one wet room without a GC. Both arrangements work for us. Direct clients get the same scope sheet a GC would, written in plain language, so you always know what sits inside our number and what does not.

What about ADU and garage conversions?

ADU and garage conversions are the biggest jobs in this category, because a garage has no plumbing at all. A one-bedroom ADU needs a full bathroom, a kitchen sink, usually laundry, plus a drain line trenched to the main sewer and a water feed sized for the extra fixtures.

Los Angeles has waved through thousands of ADUs a year since the state loosened the rules, and the plumbing is routinely half the mechanical budget. Expect $8,000-$25,000 for the full scope, depending on how far the sewer sits from the new bathroom and whether your water service needs upsizing.

Old garages hide surprises: thin slabs, a sewer deeper than the plans admit, a water main already at capacity. We camera the sewer and check static pressure before quoting, so the trench never turns into a change order.

Which permits and inspections should I expect?

Remodel work needs a plumbing permit almost everywhere once pipes move or new fixtures appear. In the City of Los Angeles we file through LADBS, while Burbank, Glendale, and Pasadena run their own counters with their own quirks. Fees for a bath remodel typically run $150-$500.

Two inspections matter. The top-out comes after rough-in: the inspector sees every joint under a water or air test while the framing is open. The final comes after trim-out, with fixtures set and working. We meet the inspector for both, and nothing closes up until the rough work passes.

Unpermitted remodel plumbing surfaces at the worst time, during a sale, an insurance claim, or an appraisal. Doing the paperwork right costs a few hundred dollars and two site visits, so we treat it as part of the job, not an add-on.

Why send one crew for the plumbing and the wiring?

A bathroom remodel is never just pipes. The same room needs GFCI outlets, an exhaust fan, vanity lighting, maybe a circuit for a bidet seat or a heated floor. On most projects that means a second contractor, a second schedule, and two subs pointing at each other when the drywall date slips.

We rough in both trades with one crew on one schedule, under one CSLB license. The plumber setting your shower valve and the electrician wiring the fan ride in the same truck, which is rarer than it should be. Our Los Angeles electrician page covers that side in detail, from panels to lighting.

For a GC, that collapses two subcontractor slots into one. For a homeowner running their own job, it halves the coordination and usually shortens the open-wall stage by days.

How does a remodel rough-in run, start to finish?

Every remodel differs, but the plumbing stage follows the same skeleton. On a one-bathroom project with moved fixtures, our part usually spans two to four site days spread across the schedule.

1. Plan review and estimateabout 1 hour

   We walk the space or read the drawings, confirm fixture locations, and price the scope in writing.

2. Permit filinga few days

   We pull the plumbing permit through LADBS or your city before demo starts.

3. Layout after demo1-2 hours

   With the framing open, we mark drain, vent, and supply routes and settle conflicts with the GC on the spot.

4. Rough-in1-3 days

   Drains, vents, and supplies go in, plus the tub set and shower valve, and the system goes under test.

5. Top-out inspectionabout 1 hour

   The inspector checks the piping under pressure while everything is still visible.

6. Trim-outhalf a day

   After tile and paint, we set the toilet, faucets, disposal, and shower trim, then run every fixture.

7. Final inspectionabout 1 hour

   The city signs off on the finished room, and we hand you the paperwork.

The gap between rough and trim belongs to the other trades, tile, drywall, and paint, and it can run weeks. We book the trim visit as soon as the painter names a date, so your fixtures go in the day the room is ready.

Why hire A+ Electric & Plumbing for your bathroom remodel?

A+ Electric & Plumbing is a licensed contractor for both plumbing and electrical work, CSLB #942404, based in Tujunga with remodel crews across Los Angeles and the San Fernando Valley. Every job carries our 1-year workmanship guarantee.

Remodel work rewards a sub that knows the local housing stock: raised 1920s bungalows in Highland Park, slab ranches in Reseda, hillside houses where the sewer climbs to the street. We bid from real conditions, not averages, and you can check our license standing at the CSLB anytime.

Bathroom remodel plumbing across Los Angeles runs on the project schedule, and a missed rough-in date stalls every trade behind it. If you want the pipes and the wiring handled by one crew that shows up when promised, call (818) 421-5290 for a free written estimate. The rest of our services live on the Los Angeles plumber hub.

Frequently asked questions