Bathroom Remodeling in Pomona — One Written Price, No Change Orders

Fast, Reliable Bathroom Remodeling Across Pomona

Bathroom remodeling in Pomona typically costs between $18,000 and $45,000 for a full gut renovation, with smaller updates like a tub-to-shower conversion running $9,000 to $16,000. Most projects on Pomona’s older housing stock take three to six weeks once permits clear. Call (866) 403-9834 for a free, line-item estimate on your specific bathroom.

Call (866) 403-9834

We work on Pomona homes every week, from the 1920s bungalows near Ganesha Park to the mid-century ranchers along Phillips Ranch and the larger lot properties out toward Phillips Drive and the 91766 ZIP. Those older homes come with vent stacks and drain lines that newer neighborhoods simply don’t have, and getting those right is what separates a bathroom that lasts from one that leaks in two years. Home Base ADU Builders has remodeled bathrooms inside detached ADUs, garage conversions, and the main houses across Pomona, and we know what the county inspectors look for here, including through our Abodu service in Pomona.

Why Home Base ADU Builders Is Pomona’s Preferred Bathroom Remodeling Company

Home Base ADU Builders is led by Neil Bradshaw, who has spent years managing bathroom and kitchen remodels alongside ADU construction across LA County. We’re not a generalist contractor dabbling in bathrooms. We focus on three things: accessory dwelling units, kitchens, and bathrooms. That focus shows up in how we scope a Pomona job before you sign anything.

Pomona homeowners call us because we understand the peculiarities of the city’s housing stock. A bathroom remodel in a 1958 ranch off Holt Avenue is not the same as one in a 2015 tract home in Claremont. The older Pomona homes have cast-iron drains, attic-terminating vent stacks, and original slab construction that changes how you re-pipe, re-vent, and waterproof. Our single-contractor model means the same crew that remodels your bathroom can also handle the ADU in the backyard, the kitchen next door, or the garage conversion out back. One contractor from foundation to finished bathroom.

We price with fixed, written line items. No change orders because we missed something in scoping. Before we quote, we inspect the existing drains, vents, and slab. On Pomona acreage lots, we also review county septic and well setback requirements. That pre-work is why our quotes hold once work starts.

Our Bathroom Remodeling Services in Pomona

We handle the full scope of Bathroom Remodeling work across Pomona, from cosmetic updates to full structural re-pipes. These are the jobs we do most often in this city.

Bathroom Remodeling Within Detached ADU Conversions

When Pomona homeowners convert a detached garage into an ADU, the bathroom is usually the most complicated part. The existing slab may or may not have a drain rough-in. The original vent stack may terminate in the garage wall cavity. We handle the full bathroom build inside the ADU, including re-routing vents through the new roof, trenching for a new drain line, and waterproofing to county code. On a deep R-1 lot off Phillips Drive in the 91766 ZIP, we remodeled a 1950s hall bath while converting the detached garage into an ADU. Our tech found the original cast-iron drain running under the garage slab and the vent stack tied into the garage wall, both of which had to be re-piped and re-vented through the new ADU roof before the shower pan could go in. We coordinated the county plumbing inspection with the ADU framing inspection so the owner only paid for one re-inspection.

Bathroom Remodeling for Garage Conversions

Many Pomona garages date back to the 1940s and 1950s. The slab is often structurally sound, but the plumbing underneath may be original cast-iron that has corroded from decades of Southern California soil contact. We run a camera scope on every garage-conversion bathroom before quoting. If the drain line is compromised, we trench and replace it before we build the bathroom on top. Skipping that step is how you end up with a shower that backs up six months after the project is done.

Bathroom Remodeling with Septic and Well Setback Coordination

Pomona has acreage lots, particularly in the northeast reaches of the city and along Phillips Ranch, where homes run on septic systems and private wells rather than city sewer. Adding a bathroom or increasing fixture count on those properties can trigger a county septic capacity review and a well isolation distance check. We coordinate that with the building permit so you don’t get a surprise stop-work order midway through framing. This is not standard practice for bathroom remodelers in neighboring cities, but it’s routine for us in Pomona.

Main House Bathroom Upgrades

For bathrooms inside the primary residence, we handle everything from a simple tub-to-shower conversion to moving walls and reconfiguring the footprint. Many Pomona bungalows have a single bathroom, and owners want to add a second one or expand the existing one. We scope those with the same attention to vent routing, drain line condition, and waterproofing detail as our ADU bathrooms.

Trusted Brands We Service in Pomona

We work hands-on with several manufacturers and material brands that matter for Pomona bathrooms and ADUs. For bathroom-specific work, we regularly use James Hardie fiber-cement products for exterior walls and backing where moisture resistance matters, and we’re familiar with the interior fixture and finish standards used in ADUs from Bathroom Remodeling in Pomona projects built by Boxabl, Plant Prefab, and Tuff Shed conversions. When a Pomona homeowner has an existing prefab ADU from one of these brands and wants a bathroom upgrade or a second bathroom added, we already know the wall assembly, the plumbing rough-ins, and the vent path those units use. That familiarity means we don’t have to reverse-engineer someone else’s build.

Common Bathroom Remodeling Problems We See in Pomona Homes

• Vent stacks that terminate in the attic or garage wall cavity. Pre-1950 and mid-century Pomona homes often have bathroom vent stacks that never made it through the roof. A remodel that adds a bathroom fan or relocates a fixture frequently requires re-routing the vent through the new roof or wall, with proper flashing to handle Santa Ana wind-driven rain.
• Corroded cast-iron drains under garage slabs. Older Pomona garages converted to ADUs or bathroom additions often sit on original cast-iron drain lines. A camera scope before we quote tells us whether the line can handle a new bathroom or whether we’re trenching through the slab.
• Missing county septic or well reviews on acreage lots. Properties in the 91766 and 91768 ZIPs with septic systems can’t add bathroom fixtures without checking capacity and isolation setbacks. We handle that coordination as part of the permit package.
• Grading and drainage around flat ADU rooflines. Bathroom additions inside detached ADUs often change the roofline slightly. In Pomona’s inland climate, water runs fast during winter rains, and if the new roof concentrates runoff toward the foundation, you get moisture problems. We include site drainage review in our scope for any bathroom that changes exterior walls or rooflines.

Pricing for Bathroom Remodeling in Pomona, CA

We Also Serve Cities Near Pomona

Our crews regularly run bathroom remodel projects in Pomona and the surrounding communities, including La Verne, Claremont, Montclair, and Los Serranos. If you live in one of those cities and are planning a bathroom remodel or an ADU with a bathroom, the same scoping approach applies. We inspect before we quote.

FAQs – Bathroom Remodeling in Pomona