Walk-in shower conversion in Los Angeles: cost drivers, permit and order of work

How much does it cost to remove a bath and install a walk-in shower?

A tub-to-walk-in-shower conversion in Los Angeles starts around $10,000, according to Aggregate Construction Group, which lists $10,000 to $15,000 for a standard conversion with new drain and valve, tile and glass and $20,000 to $30,000 or more for a luxury one.1 The price rises with the scope: whether the drain moves, whether the shower is curbless, and how much of the rest of the bathroom is redone. Green Design and Build lists $18,000 to $40,000 for a tiled conversion inside a mid-range bathroom remodel and $40,000 to $80,000 or more for a curbless or luxury one,2 and Right Image Builders lists $22,000 to $52,000 across the San Fernando Valley.3 These are general ranges from outside sources. They are not Home Pro's prices and not a quote, and they vary by scope. The conversion usually needs a plumbing permit, because the drain and water lines change. The real number for your bathroom comes from an in-home look at the room. For a whole-room figure, see our post on bathroom remodel cost in Los Angeles.

Here is what outside guides publish, by scope:

• Standard conversion: new drain and valve, porcelain or ceramic tile, frameless or semi-frameless glass: $10,000 to $15,000. Source: Aggregate Construction Group, updated Oct 20261.
• Luxury conversion: stone, steam unit or moved drains: $20,000 to $30,000 or more. Source: Aggregate Construction Group1.
• Basic conversion: prefab pan and surround in the tub footprint, inside a refresh: $8,000 to $18,000. Source: Green Design and Build, Sep 5, 20262.
• Tiled conversion inside a mid-range remodel (also new vanity, floor tile, fan and lighting): $18,000 to $40,000. Source: Green Design and Build2.
• Curbless or luxury conversion: $40,000 to $80,000 or more. Source: Green Design and Build2.
• Tub-to-shower conversion, San Fernando Valley (rest of the room refreshed around it): $22,000 to $52,000. Source: Right Image Builders, Oct 16, 20263.
• Tub-to-shower conversion, Tarzana: $28,000 to $44,000. Source: Right Image Builders, Oct 15, 20264.
• Major bathroom remodel with at least the shower upgraded, national median: $25,000 (under 100 square feet $18,000). Source: Houzz 2026 Bathroom Trends Study5.
• Tub-to-shower conversion, national: $2,000 to $12,000. Source: This Old House, updated Mar 4, 20266.
• Most tub-to-shower conversions, Los Angeles: $1,704 to $9,088 (average $3,408). Source: Angi, updated Jul 9, 20267.
• Small prefab stall in place of the tub (32 by 32 inches): $1,800 to $3,800. Source: Angi7.
• Larger stall (36 by 60 inches): $2,500 to $6,500. Source: Angi7.
• Curbless or barrier-free stall: $4,000 to $10,000. Source: Angi7.
• Tub into a custom tiled walk-in: $6,000 to $18,000. Source: Angi7.
• Walk-in shower, Los Angeles bathroom guide: $5,754 to $11,645. Source: Angi, updated Feb 25, 20268.

Angi says prefab stall kits run $1,800 to $10,000 and that those figures do not include professional installation.7

Why do published conversion prices disagree?

Because the scope differs. A prefabricated stall in the old tub footprint is a different job from a tiled shower with glass and a moved drain, and a curbless shower is different again. Two of the contractor figures above also include work on the rest of the bathroom, such as a new vanity, floor tile, fan and lighting.23 Lead-generation guides publish much lower numbers: Angi's conversion guide lists $1,704 to $9,088 for most Los Angeles conversions and its bathroom remodel guide lists $1,644 to $4,932, against $10,000 to $15,000 from Aggregate Construction Group for a standard conversion with tile and glass.781 Many published figures are also national averages. Los Angeles labor, permits and older plumbing can change them.

What is the most expensive part of redoing a bathroom?

Usually the work behind the wall: moving plumbing, then tile labor and the waterproofing under it. Angi puts labor at 40% to 60% of a Los Angeles bathroom budget.8 For a conversion, Green Design and Build lists plumbing with the drain and valve left in place at $500 to $2,500, and relocating the drain at $2,500 to $6,000 on a raised foundation or $5,000 to $12,000 or more on a slab.2 Angi lists plumbing updates at $500 to $3,000 and waterproofing at $800 to $2,500 in Los Angeles.7 This Old House says moving a drain line can cost $900 to $1,100 and that several plumbing changes can pass $2,000, in a national guide.6 Keeping the drain where it is holds the cost down.

Step 1. Does the conversion need a permit?

Usually yes, because the drain and water lines change. LADBS requires a plumbing permit for any installation or modification of drain, waste, vent or water piping.9 Replacing a plumbing fixture can go through an LADBS Express Permit.10 Moving the drain or valve through the wall means the permit is issued at a Construction Services Center.11 Angi puts Los Angeles permit costs for a conversion at $200 to $1,000, depending on plumbing or structural changes.7 We pull the permits. The steps are in our bathroom permit post.

Step 2. How big does a walk-in shower have to be?

At least 1,024 square inches inside, able to hold a 30 inch circle, up to 70 inches above the drain. The 2025 California Plumbing Code, section 408.7, sets that rule, and exempts a shower receptor that measures at least 30 inches wide and 60 inches long. Showers designed to the California Building Code accessibility chapter follow that chapter instead.12 For scale, This Old House says most standard bathtubs measure about 60 inches long and 30 to 32 inches wide, and that conversions that stay within those dimensions are typically cost less.6 The code text above comes from a code-text website, not from LADBS, so ask your inspector which version applies to your permit. LADBS takes inspection questions at 311.11

Step 3. What happens before the tile goes up?

The plumbing and the waterproofing come first, and the waterproofing has to cure. One Los Angeles contractor's guide lists the order for a bathroom with a new tiled shower as plumbing rough-in, then waterproofing and the shower pan with a curing window that cannot be rushed, then tile.13 This Old House says tile showers need cement board and waterproof membranes, and that walk-in and curbless showers often need the subfloor adjusted to give the floor its slope to the drain.6 Ask that the written scope name the waterproofing method.

Step 4. What are the rules for shower glass and surfaces?

Shower floors and walls need a smooth, hard, non-absorbent surface at least 70 inches above the drain inlet. Glass in shower and tub enclosures must be fully tempered or laminated safety glass, or approved plastic.11 Glass is priced separately in most guides: Angi lists frameless doors at $1,200 to $4,500 in Los Angeles,7 and This Old House lists installed frameless doors at $1,200 to $3,000 nationally.6 The written scope should say who supplies and installs any door or panel.14

Step 5. How do inspections work?

In most cases LADBS requires one inspection when the bathroom is complete, and larger jobs can have partial inspections.1115 You request the Final inspection with AIRS code 335, one business day ahead.11 Ask your inspector which inspections apply to your permit.

How long does a tub-to-shower conversion take?

Outside guides give general figures. This Old House says most professional tub-to-shower conversions take three to seven days, with prefab installs quicker and custom tile or curbless showers a week or longer.6 One Los Angeles contractor's guide lists 2 to 3 days for waterproofing with cure time and 4 to 7 days for tile in a full bathroom, and says shower glass is measured after the tile is set and takes one to two weeks to fabricate.13 Those are other companies' figures, not a Home Pro schedule. CSLB says a contract should state when the job will be finished, so ask for that in writing.14 More on bathroom timing is in our post on how long a bathroom remodel takes.

Is it cheaper to replace a tub or convert to a shower?

It depends on the plumbing and the tile, not on the fixture name. This Old House says converting is often more expensive than replacing a tub in the same footprint, especially when new plumbing, glass or tile is involved.6 Angi's Los Angeles bathroom guide lists bathtub replacement at $2,500 to $12,000, a range that overlaps its conversion figures.8 A conversion stays closer to a tub swap when the drain stays put and the shower floor fits the old tub footprint.

How much does Home Depot charge for tub to shower conversion?

The Home Depot's own cost guide lists an average total of $12,500 to $18,000 for a tub-to-shower conversion, and says wet-area renovations cost about $8,000 to $15,000 including materials and labor.16 Both are national guide figures, not Los Angeles prices. The same page lists the pieces that move a total: the shower pan, wall materials, enclosure and doors, hardware, faucets, safety features, and, as separate items, permits, disposal and mold, mildew or rot found during demolition.16 Whichever quote you compare, check which of those it includes.

Does a walk-in shower add value to your home?

It depends on the buyer, the neighborhood and the rest of the bathroom. This Old House says the resale effect varies by market and suggests keeping at least one bathtub elsewhere in the home.6 We have no verified Los Angeles figure, so we do not give one. The daily-use reasons are plainer: a more open room and a faster routine.6

Written by Home Pro Green Remodeling Inc., a general contractor in Tarzana. CSLB #1003187.

Next step

Thinking about a walk-in shower? Call (818) 610-9852 or send a note through the contact form on our website. We will look at the bathroom with you and put the scope in writing. Home Pro Green Remodeling Inc., CSLB #1003187.

Related reading: bathroom remodel permits in Los Angeles, how long a bathroom remodel takes, how to choose a remodeling contractor, kitchen remodel permits in Los Angeles.

Home Pro Green Remodeling Inc. | CSLB #1003187 18375 Ventura Blvd Ste 378, Tarzana, CA 91356 (818) 610-9852

Sources (every page below was opened and read on 2026-10-27)

All dollar figures in this post are other companies' published general ranges, quoted as they appear. None is a Home Pro price.

1. Aggregate Construction Group (CSLB #1034714), "Tub-to-Shower Conversion Ideas for LA Bathrooms", Jul 27, 2026, last updated Oct 2026 (standard conversion $10,000 to $15,000; luxury $20,000 to $30,000 or more; market ranges, not quotes). https://aggcg.com/expert-tub-to-shower-conversion-services-in-los-angeles/
2. Green Design and Build (CSLB #1110975, Van Nuys), "Tub-to-Shower Conversion Cost in Los Angeles (2026)", Sep 5, 2026 (a contractor's budgeting estimates, not a quote; scope tiers, drain relocation, installed floor tile). https://greendesignandbuild.com/tub-to-shower-conversion-cost/
3. Right Image Builders (CSLB #1021284, Valley Glen), "Tub-to-Shower Conversion or Full Bathroom Remodel", Oct 16, 2026 (San Fernando Valley planning range $22,000 to $52,000; includes refreshing the rest of the room). https://rightimagebuilders.com/guides/tub-to-shower-conversion-vs-full-bathroom-remodel/
4. Right Image Builders (CSLB #1021284, Valley Glen), "How Much Does a Bathroom Remodel Cost in Los Angeles in 2026?", published Oct 15, 2026 (a contractor's planning ranges, not bids; Tarzana row of its neighborhood table). https://rightimagebuilders.com/guides/bathroom-remodel-cost-los-angeles/
5. Houzz, 2026 U.S. Houzz Bathroom Trends Study, fielded Aug 2026, national, 2025 spending (major remodel with at least the shower upgraded: median $25,000, top 10% $70,000; under 100 sq ft $18,000; 100 sq ft or more $30,000; minor remodel median $9,000). https://st.hzcdn.com/static/econ/2026U.S.HouzzBathroomTrendsStudy.pdf
6. This Old House, "How Much Does Tub-to-Shower Conversion Cost? (2026 Guide)", updated Mar 4, 2026 (national; built from a January 2026 homeowner survey and Homewyse and Home Depot price data). https://www.thisoldhouse.com/bathrooms/tub-to-shower-conversion-cost
7. Angi, "How Much Does a Tub-to-Shower Conversion Cost in Los Angeles, CA? [2026 Data]", updated Jul 9, 2026 (a lead-generation site; most projects $1,704 to $9,088, average $3,408; stall, custom tiled walk-in, plumbing, waterproofing, permit and door ranges). https://www.angi.com/articles/convert-tub-to-shower-cost/ca/los-angeles
8. Angi, "How Much Does a Bathroom Remodel Cost in Los Angeles? [2026 Data]", updated Feb 25, 2026 (a lead-generation site; typical $13,185 to $27,072; labor 40% to 60%; walk-in shower and tile figures). https://www.angi.com/articles/how-much-does-bathroom-remodel-cost/ca/los-angeles
9. LADBS, Plumbing Permits. https://dbs.lacity.gov/services/plan-review-permitting/plumbing-permits
10. LADBS Information Bulletin P/GI 2026-003, Express Permits (No Plan Check Required), effective Jan 1, 2026, revised Jun 10, 2026 (Plumbing items 2 and 3: replacing and adding plumbing fixtures). https://dbs.lacity.gov/sites/default/files/efs/forms/pc17/ib-p-gi-2020-003-express-permits_rev-5-28-2024.pdf
11. PermitLA (LADBS), Bathroom Remodel/Repair (Construction Services Center permits; shower surfaces and glazing; one inspection at completion in most cases; AIRS code 335; 311). https://www.permitla.org/building/bathroom_remodel_repair_detail.html
12. 2025 California Plumbing Code (Title 24, Part 5), section 408.7, Shower Compartments, as published by gocodebook.com; official source is the California Building Standards Commission. This is a code-text mirror, not LADBS. https://gocodebook.com/library/us/ca/ca-plumbing-code/chapter-4-plumbing-fixtures-and-fixture-fittings/408.7-shower-compartments
13. Aggregate Construction Group, "How Long Does a Bathroom Remodel Take in Los Angeles?", June 23, 2026 (third-party Los Angeles contractor guide, not Home Pro data). https://aggcg.com/how-long-does-a-bathroom-remodel-take/
14. CSLB, What Should I Look for in a Contract and Binding Agreements (details in the contract; written scope; finish date). https://www.cslb.ca.gov/consumers/hire_a_contractor/Contracts_And_Binding_Agreements.aspx
15. LADBS, Homeowner Step-By-Step (partial and final inspections). https://dbs.lacity.gov/services/homeowner-step-by-step
16. The Home Depot, "Tub to Shower Conversion Cost Guide" (national average total $12,500 to $18,000; wet-area renovations $8,000 to $15,000; factors that affect cost). https://www.homedepot.com/services/c/cost-tub-shower-conversion/f939dd56a
17. CSLB, Check a License. https://www.cslb.ca.gov/onlineservices/checklicenseII/checklicense.aspx