Aging-in-Place Bathroom Remodeling in Union City, CA

Safer Bathroom in Union City: Free In-Home Consultation

Core upgrades

Union City’s housing count climbed from about 1,700 units in 1960 to nearly 19,000 by 2000, based on census figures. That fast growth means many bathrooms are decades old. This page covers what to upgrade, how to get permits from the city, and where to find help.

  • Grab bars at the toilet and in the shower or tub, 33 to 36 inches high, on solid blocking.
  • Low-step or curbless shower with slip-resistant floor.
  • Bench or fold-down seat about 17 to 19 inches high.
  • Handheld shower with anti-scald valve. The plumbing code caps shower water at 120 degrees Fahrenheit.
  • Better lighting and lever handles.

Heights come from the 2010 ADA Standards, a reference for homes rather than a home requirement. See the aging-in-place bathroom guide.

How a curbless shower is built, step by step

Before we design a curbless shower in Union City, we look at what is under the bathroom floor: a concrete slab or a wood-framed floor. That decides how the shower area is lowered. Press Play to watch each step, or tap one. Switch between a concrete slab and a wood-framed floor.

Cross-section of a curbless shower being built Six steps: the old shower with a curb, recessing the floor, a linear drain and sloped mortar bed, a bonded waterproof membrane with a flood test, tile flush with the bathroom floor, and finishing with glass, a handheld shower and grab bars on solid blocking. wall BATHROOM SHOWER Slab saw-cut and loweredcheck first for post-tension cables floor joists Subfloor dropped between joistsframing lowered or sistered, as engineered curb a step to trip on slopes to drain: 1/8 to 1/2 in per ft linear drain sloped mortar bed (or foam tray) bonded waterproof membrane up the walls and past the shower flood test: 2 in of water, 15 min or more temporary dam at the open entry flush at the entry:no curb, no step grab bar on solid blocking slide-bar handheld fixed glass panel Roll or walkstraight in

Illustration by Axiom Renovation, not to scale. Shower floor slope and flood test from the California Plumbing Code (sections 408.6 and 408.8). Every floor is different; framing changes are confirmed by a structural engineer when needed.

Permits from the Union City Building Division

Union City’s Building Division is at 34009 Alvarado-Niles Road, phone 510-675-5313. The city’s submittal sheet says a permit is needed for work that removes, adds, alters or repairs walls, or that adds or replaces electrical, gas, mechanical or plumbing systems.

The city exempts finish work such as tiling, cabinets and countertops. Removing and reinstalling a toilet is also exempt, as long as no valves or pipes are replaced or rearranged. A new shower pan or moved drain is outside that list.

Applicants submit a permit application, three plan sets, a CALGreen checklist and Title 24 forms when they apply. Over-the-counter permits are available at the counter, and the city does not describe a general online portal for other permits. Axiom prepares the package.

Civil Code 1101.4 also applies: noncompliant fixtures are replaced when a permit is issued on a single-family home.

Recent Axiom walk-in showers

Walk-in shower with built-in bench, slide-bar handheld and frameless glass
Walk-in shower with built-in bench, slide-bar handheld and frameless glass
Large walk-in shower with linear drain and handheld shower, Los Gatos
Large walk-in shower with linear drain and handheld shower, Los Gatos
ADU walk-in shower with linear drain and slide-bar handheld, San Jose
ADU walk-in shower with linear drain and slide-bar handheld, San Jose
Walk-in shower with linear drain next to a double vanity, Fremont
Walk-in shower with linear drain next to a double vanity, Fremont

Bathrooms recently built by Axiom Renovation: walk-in showers with low curbs or open entries, linear drains, handheld showers and a built-in bench.

Local housing and floors

With most of the housing built after 1960, many Union City homes have older tub surrounds and original valves. During demolition we look for hidden damage. For a curbless shower we confirm the floor: a wood floor may be recessed between joists, and a slab may need cutting. Post-tensioned slabs must be identified before any cutting.

Resources for older adults

The Ruggieri Senior Center offers Active 50+ programs through Community and Recreation Services, 510-471-3232. Ride-on Tri-City gives rides to people 70 and older in Union City, Fremont and Newark, 510-574-2053. The Alameda County Healthy Homes Minor Home Repair Program serves Union City homeowners within income limits and covers grab bars, railings and toilets. Call 510-567-8280.

Reference dimensions: shower seat, grab bars and toilet

These two drawings put the most-asked numbers in one place. They come from the 2010 ADA Standards, which homes are not required to follow but which give a tested starting point. We fine-tune heights to the people who live in the house.

shower floor fold-down seat15–16 in deep grab bar (not above the seat) lever control, above the bar,within 27 in of the seat wall handheld on slide bar, 59 in+ hose 33–36 in to top of bar 17–19 in 48 in max 1½ in space behind bar · 1¼–2 in diameter holds 250 lb · screwed into solid blocking
Back wall of a roll-in showerA fold-down seat on the side wall, its top 17 to 19 in above the floor and 15 to 16 in deep. The grab bar runs along the back wall, not above the seat, with its top 33 to 36 in high. Controls sit above the bar, no higher than 48 in and within 27 in of the seat wall. A handheld shower with at least a 59 in hose works seated or standing.
rear wall side wall centerline 16–18 in 12 in max side bar 42 in min rear bar 36 in min 12 in one side of centerline, 24 in on the other side bar reaches54 in from rear wall Seat height 17–19 in (“comfort height”) Bars mounted 33–36 in high flush lever on the open side keep the open side clear for a walker or a transfer
Toilet area, seen from aboveToilet centered 16 to 18 in from the side wall, seat 17 to 19 in high. A side-wall bar at least 42 in long starts no more than 12 in from the back wall. A rear bar at least 36 in long sits 12 in to one side of the toilet's centerline and 24 in to the other.

Reference dimensions from the 2010 ADA Standards for Accessible Design (sections 604, 608.3, 608.5, 608.6, 609 and 610). They are required in public buildings, not in private homes, where they serve as a proven guide. Hand-shower hose length from section 608.6. We adjust heights to the people who will use the bathroom, ideally with input from an occupational therapist. Drawings by Axiom Renovation, not to scale.

Work with Axiom in Union City

Axiom Renovation is a licensed general contractor (CSLB #1105006). We design, permit and build bathroom remodels in Union City. See our Union City bathroom remodeling page, read the full aging-in-place bathroom guide, or browse Bay Area bathroom remodeling. Nearby: Fremont, Hayward.

Call 408-702-2022, Monday to Friday, 9 am to 5 pm, or use the contact page.

Process

Our Bathroom Remodeling Process

Step 1

Initial Consultation

We begin with a thorough initial consultation to understand your needs, assess your space, and discuss your vision, budget, and timeline.

Step 2

Planning and Design

At Axiom Renovation, we understand that the planning and design phase of a bathroom remodel is crucial to its success. Our dedicated project managers will work closely with you to understand your goals, design ideas and budget for the project.

Step 3

Material Selection

We guide you through selecting high-quality materials that fit your design and budget, ensuring durability and aesthetic appeal.

Step 4

Demolition and Preparation

Careful demolition and preparation work are performed to ready the space for construction, minimizing disruptions and ensuring a clean work environment.

Step 5

Construction and Installation

Our skilled craftsmen handle the construction phase, including obtaining permits, scheduling appointments, and the actual construction and installation with precision, building the new space according to the approved design.

Step 6

Electrical and Plumbing Work

Licensed professionals conduct all electrical and plumbing work, ensuring everything is up to code and seamlessly integrated into the new bathroom.

Step 7

Painting and Finishing

We pay close attention to detail during the painting and finishing stage, ensuring all surfaces are properly prepared and beautifully finished.

Step 8

Fixture and Appliance Installation

We expertly install all fixtures and appliances, ensuring they function correctly and fit perfectly with the overall design.

Step 9

Final Touches and Clean-Up

Final touches are added, and a thorough clean-up is performed, leaving your new space pristine and ready for use.

Step 10

Final Walkthrough and Client Satisfaction

We conduct a final walkthrough with you to ensure every detail meets your expectations and address any remaining concerns, ensuring your complete satisfaction.

Union City Aging-in-Place Bathroom FAQ

Do I need a permit for a bathroom remodel in Union City?

If you add or replace plumbing or electrical, or alter walls, yes. Finish work like tiling is exempt.

Can I reinstall a toilet without a permit?

The city exempts removing and reinstalling a toilet if no valves or pipes are replaced or rearranged.

Can a curbless shower go on a slab in Union City?

Often, with cutting for the drain area. We identify post-tensioned slabs first.

How long does the work take?

Grab bars are quick. A full conversion takes longer. We set a schedule after a visit.

What local programs help Union City seniors?

The Ruggieri Senior Center runs Active 50+ programs, and Alameda County Healthy Homes offers minor home repair for eligible homeowners.

Who remodels aging-in-place bathrooms in Union City?

Axiom Renovation designs, permits and builds safer bathrooms in Union City, from grab bars and curbless showers to full remodels. Call 408-702-2022, Monday to Friday, 9 am to 5 pm.

Sources: City of Union City, Building; Union City, Residential Interior Remodels Submittal Requirements; Union City, Work Not Requiring a Construction Permit; Union City Community and Recreation Services; Alameda County Healthy Homes Department; MTC, Union City Census Data 1950-2020; California Civil Code 1101.4; 2025 California Plumbing Code 408.6 (via GoCodebook); U.S. Access Board, 2010 ADA Standards. This page is general information, not medical, legal or tax advice.

Safer Bathroom in Union City: Free In-Home Consultation

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