Bathroom Remodeling Projects by NP Line Design
Real projects across Los Angeles. View full gallery →
A bathroom remodel in Los Angeles takes 4 to 10 weeks of construction. A guest bath takes 4 to 6 weeks. A master bath with walk-in shower takes 6 to 10 weeks. Add 3 to 6 weeks for permits.
Layout finalization, tile selection (floor, shower, accent), vanity and fixtures chosen, glass enclosure specified. All materials ordered to arrive before demolition.
LADBS plan submission for plumbing/electrical changes. 3-6 week review. Over-the-counter possible for minor bath remodels.
Remove existing tile, vanity, toilet, tub/shower. Inspect subfloor and framing for water damage or rot. Address any structural issues before proceeding.
Relocate drain lines and supply pipes as needed. Install new circuits for heated floors, exhaust fan, and lighting. Rough inspection.
Shower pan construction (mud bed or prefab), Schluter/Laticrete waterproofing membrane, wall and floor tile installation. This is the longest single phase — 7-10 days for a master bath.
Vanity installation, countertop, mirror, glass shower enclosure. Toilet reinstall. Light fixtures, exhaust fan, towel bars, accessories.
Final paint touch-up, caulking, grout sealing, final cleaning. LADBS final inspection. Punch list walkthrough with homeowner.
No — the bathroom being remodeled will be completely unusable for 4-6 weeks. Ensure you have access to another bathroom in the home. For single-bathroom homes, discuss temporary solutions with your contractor before starting.
Waterproofing. A shower or tub surround that isn't properly waterproofed will develop mold, rot the framing, and require a complete redo. NP Line Design uses industry-standard Schluter or Laticrete systems with 10-year warranties.
Guest bath: $18K-$30K. Master bath: $35K-$55K. Luxury spa bath: $60K-$100K+. Costs include demolition, plumbing, electrical, tile, fixtures, and LADBS permits. NP Line Design provides fixed-price quotes.
Get a free estimate with a personalized timeline for your project.
Get My Free Estimate → Or call (818) 600-7492NP Line Design (CSLB #1105249). Timelines reflect Los Angeles metro area, April 2026.
Real projects across Los Angeles. View full gallery →
“The conversion from tub-shower combo to walk-in shower is the most requested bathroom upgrade I do in Los Angeles. But before anyone commits to that layout, they need to understand the permit trigger: removing a bathtub entirely from a home with only one bathroom requires a variance in some LA jurisdictions. I verify that at the planning stage, not after demo. For most 1950s–1970s Los Angeles homes with two or more bathrooms, it's straightforward.”
Add a heated floor to any primary bathroom remodel in Los Angeles. In the San Fernando Valley, mornings are cold year-round even though the weather is mild. Electric radiant mat under tile — Nuheat or SunTouch — costs $600–$1,200 installed and is the single amenity that most Los Angeles homeowners mention when asked what they love about their remodel.
1. Skipping the waterproofing membrane behind shower tile in Los Angeles. The original shower pans in 1950s–1970s the San Fernando Valley homes are hot-mop, which is still code-compliant but fails to protect if tile grout cracks. A liquid waterproofing membrane (Schluter Kerdi or Laticrete Hydro Ban) applied to the wall board is the only reliable long-term protection against moisture intrusion in Los Angeles shower walls.
2. Choosing tile before confirming the subfloor condition in Los Angeles. In 1950s–1970s homes in the San Fernando Valley, the bathroom subfloor is often 5/8-inch plywood or 1x6 board sheathing with deflection that cracks direct-bond tile within 2 years. An uncoupling membrane installation ($3 to $4 per sq ft) is the solution — but it needs to be in the scope before the tile is selected and ordered.
3. Not checking the exhaust fan CFM requirement for Los Angeles bathrooms. Current code for the San Fernando Valley requires a minimum of 50 CFM or 1 CFM per square foot, whichever is greater. Most 1950s–1970s bathroom fans in the San Fernando Valley move 40 to 50 CFM and should be replaced as part of any remodel. A humidity-sensing upgrade fan costs $150 to $350 and prevents the mold issues that follow under-ventilated bathrooms.
If a Los Angeles bathroom contractor can't name the specific waterproofing system they use, that's a serious red flag. The correct answer in the San Fernando Valley is one of: Schluter Kerdi, Laticrete Hydro Ban, Custom Building Products RedGard, or equivalent liquid-applied membrane. 'We use cement board' is not a waterproofing system — it's a substrate. Cement board alone is not waterproof.
A bathroom remodel in Los Angeles costs $25,000 to $95,000 depending on bathroom size and finish level. In the San Fernando Valley, costs run at the LA metro average. A full primary bath remodel with walk-in shower, custom tile, and double vanity: $45,000–$80,000. A secondary bath cosmetic update: $18,000–$35,000.
A full bathroom remodel in Los Angeles takes 6–10 weeks from demo to final tile and fixtures. Add 8–12 weeks for LADBS Valley District Office (6262 Van Nuys Blvd) plan check if plumbing is being relocated. Order tile and fixtures before permit submittal — lead times run 4–8 weeks on specialty items.
A permit with LADBS Valley District Office (6262 Van Nuys Blvd) is required for any plumbing relocation, new shower pan, or electrical work (new circuits, GFCI installation, fan wiring). Cosmetic work — tile replacement in the same footprint, vanity swap, fixture replacement on existing supply lines — is generally permit-free in Los Angeles.
Check CSLB license at cslb.ca.gov, verify active workers' comp insurance, and review completed projects specifically in the San Fernando Valley. Ask about waterproofing methods used — the answer reveals competence immediately. NP Line Design (CSLB #1105249) offers free in-home estimates for Los Angeles bathroom remodels.