Bathroom remodel: costs, timeline, and what to watch for
Budget $15,000-50,000 for a mid-range bathroom remodel. Waterproofing is critical - don't let your contractor skip it.
How much does a bathroom remodel cost?
In California, expect: Budget refresh (new fixtures, paint, no layout changes): $8,000-15,000. Mid-range remodel (new tile, vanity, tub/shower, some plumbing changes): $15,000-35,000. High-end (custom tile, frameless glass, heated floors, layout changes): $35,000-60,000+. Master bathroom gut renovation: $40,000-80,000+. The biggest cost drivers: tile work (both material and labor), plumbing changes (moving the toilet or shower is expensive), and fixture quality. Waterproofing (Kerdi or similar membrane) should be included in any shower or tub surround - if your contractor doesn't mention it, ask. It's the most important thing in a bathroom.
What's the most important thing in a bathroom remodel?
Waterproofing. Without question. A beautiful tile job on top of poor waterproofing will fail within a few years, leading to mold, rot, and a complete redo. Your contractor should install a waterproof membrane (Schluter Kerdi, Laticrete Hydro Ban, or similar) on all shower walls and the shower pan before any tile goes up. Ask to see it before they tile - it's your one chance to verify. Other critical items: proper slope on the shower pan (water should drain, not pool), adequate ventilation (a bathroom fan vented to the outside, not just the attic), and GFCI outlets near water sources. These aren't optional - they're code requirements.
Should I move the toilet or keep it in the same spot?
Keep it in the same spot if possible. Moving a toilet requires breaking into the floor (or slab) to relocate the drain line, which adds $2,000-5,000+ to the project and extends the timeline by several days. It also requires a plumbing permit and inspection. If your bathroom layout really needs the toilet moved, budget for it - but understand it's one of the most expensive changes in a bathroom remodel relative to the visual impact. The money is often better spent on a nicer shower, better tile, or heated floors.
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Related guides in Project Planning
Typical timeline: 2-3 weeks for design/permits, 1 week demo, 2-3 weeks rough, 2-3 weeks finish. Total: 6-12 weeks.
California allows ADUs on most residential lots. Typical cost: $150,000-350,000 for a detached ADU.
Most remodeling projects in California need a building permit. Your contractor should pull permits - if they suggest skipping, that's a red flag.
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