New sink, shower valve, tub filler, or bathroom fixtures? New Pro handles the plumbing side of your install or remodel across the Westside — clean rough-ins, correct valves, leak-free connections, flat-rate.
Written bySteven Lockhart
·
Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)
·
Last reviewedJune 2026 · 6 min read
Quick Answer
Fixture installation is the plumbing behind a new sink, faucet, shower valve, tub, or full bathroom — the supply, drain, and venting connections that have to be right for the fixture to work and not leak. New Pro handles the plumbing side cleanly, to code, with a flat-rate quote up front.
Fixture installation is the plumbing behind the visible fixture — the supply lines, shutoff valves, drain, trap, and venting that make a sink, shower, tub, or faucet work and stay leak-free. This page is part of our complete guide to residential plumbing services across West Los Angeles. Whether you are swapping one sink or plumbing a full bathroom remodel, the fixture itself is the easy part; the connections behind it are where experience shows.
Fixture installation is the plumbing work that connects a sink, faucet, shower, tub, or similar fixture to a home’s water supply and drainage — including shutoff valves, supply lines, traps, drains, and shower or tub valves — done to code and leak-free.
On homes built mid-century, a fixture swap often reveals corroded angle stops that will not seal, drain lines undersized for a modern fixture, or galvanized supply that is restricting flow. We flag these before we close anything up so you can decide — a new shutoff is trivial during the install, but a headache later.
Modern plumbing code requires pressure-balancing or thermostatic shower valves that prevent the sudden temperature swings older homes are known for. If your shower still scalds when a toilet flushes, the valve is the reason. We install code-compliant valves during any shower fixture work, so the system is safe as well as new.
Installing a new sink or vanity means connecting supply lines through sound shutoff valves, fitting the drain and trap at the correct height, and sealing the fixture so nothing weeps behind the cabinet. We replace tired angle stops and supply lines as part of the work rather than reusing parts that are about to fail.
For a kitchen or bath remodel, we coordinate the drain and supply rough-in with your cabinet and counter layout so the faucet and sink land clean.
Planning a new sink, shower, or remodel? Let’s scope it.
Call (310) 663-7666Shower and tub installation centers on the valve. We set a pressure-balancing or thermostatic valve to code, plumb the supply and drain, and pressure-test before tile goes up — because a leak found after the wall is closed is an expensive lesson.
On a tub-to-shower conversion or a full bath remodel, the drain location and venting often need to change. We handle that rough-in so the tile and glass crew can do their part on a sound foundation.
The Bottom Line
The fixture is the easy part — the supply, drain, and valve work behind it is where a clean, leak-free, code-compliant install is won or lost. New Pro handles the plumbing side of your sink, shower, tub, or remodel, flags any aging parts before the walls close, and quotes a flat rate up front.
Yes. We are glad to install sinks, faucets, shower valves, and tubs you have already purchased. We confirm the fixture matches your rough-in and connections first, and we install with new shutoffs and supply lines for a clean, leak-free result.
Because your shower valve is an older type that does not balance pressure. When a toilet draws cold water, the hot side dominates and the temperature spikes. A modern pressure-balancing or thermostatic valve, which code now requires, prevents this — we install them during shower work.
Yes. We handle the plumbing rough-in — moving or adding supply, drain, and vent lines — before tile and walls close, then return to set the finish fixtures. We coordinate with your timeline so the plumbing does not hold up the rest of the job.
On older Westside homes, common surprises behind the wall are corroded shutoff valves, undersized or corroded drain lines, and galvanized supply piping. We flag anything we find before closing up, so you decide — and addressing it during the install is far cheaper than later.
Simple like-for-like fixture swaps generally do not require a permit, but moving drain or supply lines, or adding fixtures, often does. We advise when a permit applies and can coordinate with LADBS for permitted work.
We use new shutoffs and supply lines rather than reusing aging parts, seat drains and traps correctly, and pressure-test connections before closing anything up. On shower and tub work we test the valve and drain before tile goes on, when a leak is still easy to fix.
This page was written by the New Pro Plumbing content team and reviewed for technical accuracy by Miguel Lopez, owner and California-licensed plumber (CSLB #974600). Guidance follows U.S. EPA, U.S. Department of Energy, and California agency sources where cited. Any figures reflect New Pro Plumbing's typical practice and West Los Angeles conditions, not a quote — we confirm pricing in writing before any work begins.
What’s new: June 2026 — first publication.
New sink, shower valve, tub filler, or bathroom fixtures? New Pro handles the plumbing side of your install or remodel across the Westside — clean rough-ins, correct valves, leak-free connections, flat-rate.
