Three scopes, three very different budgets
A bathroom remodel in San Diego is really one of three projects. A pull-and-replace keeps the layout and swaps the tile, vanity, fixtures, lighting and glass. A mid-range remodel adds a tub-to-shower conversion, tile to the ceiling, upgraded stone and fixtures. A full remodel moves plumbing, changes the layout, and uses spa-grade finishes, custom glass and stonework.
San Diego contractor guides published in 2025 and 2026 put the pull-and-replace tier at roughly $15,000 to $25,000, the mid-range tier at $25,000 to $45,000, and luxury primary baths at $45,000 to $95,000 and beyond. Swell publishes $25,000 to $70,000 or more as the planning range for a full remodel, and confirms the number in a written estimate after a free in-home visit.
Size matters more than most people expect
Per-square-foot pricing is misleading in bathrooms because the expensive parts (plumbing, waterproofing, glass, the vanity) do not shrink with the room. One San Diego guide prices a full remodel of a 5-by-7 hall bath at about $13,000 to $18,000, an 8-by-10 at $24,000 to $35,000, and a 10-by-12 primary at $38,000 to $55,000.
- ◆Small baths cost more per square foot and less in total.
- ◆Doubling the room rarely doubles the price; adding a second sink, a freestanding tub or a separate shower does.
- ◆Tile to the ceiling and large-format tile add labor; so does a curbless shower on a slab, which can mean cutting concrete for the drain.
What moves the number
Four decisions set most of the cost before a single tile is chosen.
- ◆Moving plumbing. Relocating a drain on a San Diego slab foundation is quoted at roughly $3,000 to $8,000 per line in local guides, before the finish work.
- ◆The shower. A tub-to-shower conversion runs about $3,000 to $8,000 in San Diego market guides; a curbless detail adds the drain and slope work on top.
- ◆Tile scope. Floor only, wet walls only, or every wall to the ceiling.
- ◆What is behind the wall. Older San Diego homes often reveal galvanized pipe, undersized vents or past water damage once the tile comes off; a 10 to 20 percent contingency is the common guidance.
How long it takes, and when you need a permit
San Diego contractors publish about 5 to 8 weeks of construction for a bathroom once demolition starts, after several weeks of design, ordering and any permit review. Tile, glass and vanities with long lead times are ordered before demolition so the room is not open while parts are in transit.
In the City of San Diego, a same-size, same-location tub-for-tub or shower-for-shower replacement is listed as permit-exempt, and a remodel with no framing changes and no added fixtures can use a no-plan permit. Moving or adding fixtures, or touching framing, goes to plan check. Coastal and historic properties can need extra review; the County and other cities follow their own rules.
How to read a bathroom estimate
Compare estimates on scope, not on the bottom line. A good written scope names the waterproofing system behind the tile, the tile and stone allowances, the fixture brands, the glass, electrical and ventilation work, permits, and what happens if the subfloor or framing needs repair. California requires home-improvement contracts to be in writing, to describe the work and the significant materials, and to cap the down payment at $1,000 or 10 percent of the price, whichever is less.