Demolition and substrate check
Old tile, tub or shower, vanity and flooring come out, and the subfloor and wall framing are checked for water damage before anything new goes in.
A bathroom remodel is a waterproofing job first and a finishes job second. The membrane, drain layout and ventilation decide whether the room lasts; tile and fixtures are what you see. This page covers what the work involves, when moving a drain or fixture triggers permits, and what October 2026 market guides say about cost.

A bathroom remodel strips the room to its framing or to a sound substrate, rebuilds the shower waterproofing, resets plumbing and electrical, then finishes with tile, a vanity and fixtures. Keeping the toilet, tub and shower drains where they are is a far smaller job than moving them: a drain move means opening the floor, re-venting and inspection, and it changes both the permit path and the schedule.
October 2026 market guides put a Los Angeles bathroom remodel at $15,000–$150,000+, from a hall or guest bath refresh at the low end to a primary suite or spa-level build at the top. That range is a market guide from published guides, not a quote or price from Radiant Renovations Co. Guides disagree sharply by scope definition, so always compare the same scope — same layout versus moved plumbing — rather than headline figures.
A full bathroom remodel covers the stages below. A fixtures-only refresh — new toilet, vanity and faucet in the same locations — is a smaller scope and follows a different path.
Old tile, tub or shower, vanity and flooring come out, and the subfloor and wall framing are checked for water damage before anything new goes in.
The shower membrane, seams, corners and drain connection are built as one system. This is the invisible work that decides whether tile stays sound.
Drain, supply and vent work for moved fixtures, plus circuits for lighting, heated floors where planned, and ventilation. Rough-in is inspected before tile.
Floor and wall tile are set on a level, waterproofed substrate, then the vanity, toilet, shower glass and fixtures are installed and tested.
Bathroom fans are ducted to the exterior and lighting is brought up to Title 24 requirements for altered work, so moisture leaves the room instead of collecting in it.
Joints are sealed, grout is finished, and every drain, valve and fixture is run and checked before handover.
The existing drain locations, venting and electrical are checked, and the layout decision — same footprint or moved fixtures — is written into the scope.
Drain moves, membrane changes and electrical work set the LADBS permit path. Tile, vanity and fixtures are ordered before demolition where lead times require it.
Strip-out, then plumbing and electrical rough-in, inspected before waterproofing and tile cover the work.
The membrane system goes in first, then floor and wall tile, with curing and inspection points respected rather than rushed.
Vanity, toilet, shower fittings and glass are installed, sealed and tested, and the room is walked through against the written scope.
The existing drain locations, venting and electrical are checked, and the layout decision — same footprint or moved fixtures — is written into the scope.
Large-format tile is cut wet and set level, so floors drain toward the drain and walls read straight.
Membrane, banding and sealant are applied as a continuous system at seams, corners and penetrations, not as spot fixes.
New drains and supplies are tested before tile, because a leak found under finished tile is a second remodel.
Subfloor moisture and floor level are checked before tile goes down, so cracked grout and ponding do not appear months later.
The work zone is sealed from the rest of the home, and adjoining rooms are protected during demolition and tile cutting.
Silver Lake bathrooms in 1920s bungalows are often small, with original plumbing and a single bath serving the house. Gaining a second bath or a walk-in shower on that footprint is a layout and drain question first, and hillside parcels add staging and access planning.
Studio City primary suites are the classic mid-range-to-luxury bathroom scope: a tub-to-shower conversion, a larger vanity and better lighting, with the drain and vent layout deciding how much of the room has to open up.
Where this work fits in Los Angeles: Silver Lake · Studio City · Sherman Oaks · Los Feliz · Echo Park · Hollywood.
Bathrooms hide their problems behind tile. These are the ones that appear most often in older Los Angeles homes.
Ask a pro →Tile cracks when the substrate moves or the floor is out of level. The fix is in the subfloor and membrane, not in re-grouting the same cracked tile.
Leaks usually trace to the membrane, drain connection or a failed joint — all of which are checked before tile, not after.
A fan that vents into the attic or nowhere at all leaves moisture in the room. Ducting the fan to the exterior is part of the remodel scope.
Old supply lines restrict flow and corrode from the inside. Replacing them during the remodel is cheaper than opening finished walls later.
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October 2026 market guides put a Los Angeles bathroom remodel at $15,000–$150,000+, from a hall or guest bath at the low end to a primary suite at the top. That range is a published market guide, not a quote from Radiant Renovations Co.; whether drains move matters more than room size.
Moving a toilet, tub or shower drain, altering the waterproofing membrane, or adding electrical work generally requires an LADBS permit. A like-for-like fixture swap with no plumbing, electrical or structural change is a different scope — confirm it against current LADBS rules.
The tub is removed and a walk-in or curbed shower is built in its place, with a new membrane, drain and glass. It is one of the most common Los Angeles bathroom scopes, and its cost depends on whether the drain moves.
Usually yes if another bathroom is available. The room being remodelled is out of use from demolition through tile and fixture installation, so households plan around the second bath.
Call (424) 337-6597 to talk through your bathroom: same layout or moved drains, shower waterproofing, and what permit path the scope requires. Radiant Renovations Co. is open 24 hours, 7 days a week.
Book a Walkthrough (424) 337-6597 →Call (424) 337-6597 to talk through your project. Radiant Renovations Co. is open 24 hours, 7 days a week. Tell us what you want to change and we will talk through what it takes, including the permit path for the scope.