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Is a Tub to Shower Conversion Worth It in South San Francisco?

A tub to shower conversion will be well worth the money for most homeowners in South San Francisco, particularly when it comes to the old ranch style houses in the area, which have a tub that is rarely used. JK Plumbing has been performing tub to shower conversion in South San Francisco CA since 2007, and here’s the truth about whether or not it is worth it.

By Alik Yonatanov, Owner & Master Plumber · Last updated 09 September 2026

What a Tub to Shower Conversion Actually Involves

A tub-to-shower makeover is not simply refinishing or applying a surface treatment; it requires a complete rebuild. The tub is removed, plumbing lines are rerouted and fitted for the new shower valve, the floor is framed and waterproofed, and either a shower pan or mortar bed for tiling is installed, followed by acrylic, tiling, or glass.

Almost half of South San Francisco’s building stock was built prior to 1960, with a significant portion constructed during the postwar boom of the 1950s. In Sunshine Gardens and Serra Highlands, you will often find homes where the original steel or cast iron tub remains from 1953 – the same tub that came with the house. It is very different from the conditions one expects to encounter when remodeled in the 1990s.

How Much Does a Tub to Shower Conversion Cost in South San Francisco?

How much does a tub to shower conversion cost is the first question on every call, and the honest answer is that it depends on conversion type, not city. For a bathtub to shower remodel San Mateo County CA project, here’s the range we actually quote:

  • Acrylic prefab kit: $3,500–$6,500. Fastest option, 2–4 days on-site.
  • Custom tile, same footprint: $9,000–$18,000. Seven to fourteen days, including cure time.
  • Curbless or ADA walk-in shower: $12,000–$25,000. Two to three weeks when subfloor work is required.

Every quote is written and covers demo, plumbing, waterproofing, finish materials, and permit fees — no surprise change orders once the wall is open.

walk-in shower conversion palo alto

Why South San Francisco Homeowners Choose a Walk-In Shower

A typical shower conversion in Peninsula CA is usually requested for one of three reasons: reducing the risk of falls, replacing an unused bathtub, or creating a bathroom that supports aging in place.

The 14–17-inch step over a conventional bathtub can be difficult and unsafe for people with balance or mobility issues. This is especially important in Sunshine Gardens and Avalon Park ranch-style homes, where the main bathroom may be built on a concrete slab rather than a raised floor.

Who Does Tub to Shower Conversions Near South San Francisco and San Mateo County?.

Finding a contractor for a tub to shower conversion near you comes with one important consideration. Many contractors offer acrylic kits, while some offer tile options. However, few explain whether your home has a slab foundation or whether the slab can support a curbless shower without major floor work.

When choosing a contractor for a walk-in shower conversion in the San Mateo County area, look for a valid CSLB license, a written estimate before demolition, and a contractor who handles the required permits. JK Plumbing has held California License #1080266 since 2007. You can also verify any contractor’s license through the CSLB website before starting your project.

If you are looking for a tub to shower conversion company in South San Francisco, ask one key question: How do you handle a curbless shower installation on a slab-on-grade foundation?

Curbless and Accessible Walk-In Shower Conversions

For those wondering how to find the best contractor near you for an accessible walk-in shower conversion, the process is slightly different from a regular remodeling project. First, we build the shower according to ADA-style clearance requirements, including a 36-inch minimum doorway, solid wall blocking for grab bars, properly positioned grab bars, and anti-scald thermostatic valves.

From an engineering perspective, the most challenging part of a curbless shower is the subfloor. Since the floor must slope toward the drain, a curbless shower is feasible in a framed-floor Westborough hillside home. If you have a slab-on-grade home in Sunshine Gardens or Avalon Park, a curbless shower may require cutting into the slab. This is possible but can affect the project schedule and cost. We discuss these considerations during the free in-home consultation.

Any tub to shower conversion that changes plumbing configuration or modifies the subfloor requires a permit from the City of South San Francisco Building Division. We file the application, schedule the inspection, and handle the inspector — you don’t coordinate that separately.

Our Service Area Around South San Francisco

Our starting point is Burlingame, and we conduct tub to shower conversions throughout South San Francisco including Sunshine Gardens, Serra Highlands, Westborough, Sign Hill, Avalon Park, and Old South San Francisco around El Camino Real, San Bruno, Daly City, Colma, and Millbrae in San Mateo County.

If the building is commercial property, an HOA, or multi-unit residential rather than a single family dwelling, our guide to commercial conversions in Palo Alto discusses CBC Chapter 11B compliance. In contrast, for an old Victorian in San Francisco, see our guide to bathtub to shower conversions in San Francisco.

If demo turns up an old galvanized supply line or a drain that’s due for attention, we flag it on the spot — our water heater repair and lateral sewer line replacement teams handle that under the same visit rather than a second appointment.

Frequently Asked Questions

How much does a tub to shower conversion cost in the South San Francisco area?
Costs depend on the shower size, materials, plumbing, waterproofing, and accessibility features. We provide a tailored estimate.

Do you offer free tub to shower conversion estimates?
Yes. We assess your bathroom, discuss your goals, and provide a free estimate.

Can you build a curbless or accessible walk-in shower?
Yes. We install curbless and accessible showers with low thresholds, grab bars, and other accessibility features.

Does a tub to shower conversion affect home resale value?
A well-designed shower can improve functionality and appeal, but the impact on resale value varies by home and market.

Do you offer financing for a bathroom conversion?
Financing options may be available. We can discuss available plans and terms during your estimate.

Do you offer financing for a bathroom conversion?
There are financing options for some of our customers. In your estimate, we can talk about the available options and their terms.

Ready for a Tub to Shower Conversion That’s Built for Your Bathroom, Not a Template?

In case you are dealing with an old South San Francisco tub that has been transformed into a shampoo rack or you are having issues with your step-over, JK Plumbing handles everything from the demolition all the way through plumbing, waterproofing, tiling, glassing, and permitting, under one license. Contact (415) 359-4588  for a no-cost home quote or send us an email today to schedule a time. View examples of converted showers on our tub to shower conversion service page.

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