Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Bathroom Remodeling Across Antioch
A full bathroom remodel in Antioch typically runs $9,000 to $28,000, and a walk-in shower installation lands between $4,500 and $12,000. The price depends on how much we’re moving, what materials you pick, and whether the slab under your house is shifting. Call (936) 259-2607 and we’ll give you a written number before any work starts.
We know Antioch. Not just the map, but the way homes here behave. The 1990s and 2000s tract houses east of Lone Tree Way and up around the Hillcrest corridor sit on expansive Montezuma clay that swells in winter and shrinks in the long dry season. That movement cracks shower pans, pops grout lines, and makes doors stick in ways a contractor from Oakland or Walnut Creek rarely sees. Our Bathroom Remodeling team works with that soil, not against it.
Why Penhallow Remodeling Is Antioch’s Preferred Bathroom Remodeling Company
Trevor Nash runs Penhallow Remodeling in Antioch, and he’s built the company around a simple idea: write the price down before you pick up a tool, and write the guarantee down too. Every project gets a fixed price in writing, a defined arrival window, and the 365-Day Done Right Promise. If the work fails inside a year, we come back and fix it at no charge. That promise is on paper, not just on a handshake.
Antioch homeowners have been burned before. A contractor who never showed. A verbal ballpark that doubled after demolition. A shower that cracked six weeks after the final check cleared. We hear those stories on estimate calls every week. So we do the opposite. A live person answers our phone 24/7, not an answering service. Background-checked, uniformed technicians show up in the window we gave you. And the number on day one is the number on the invoice.
We’re part of the Kingswell family of companies, operating under The Kingswell Way since 2004. That means clean job sites, written guarantees on every project, and products from brands like Cambria, Silestone, Kohler, Moen, and KraftMaid. Each location is independently owned and operated. Ours serves Antioch and the surrounding East Contra Costa communities.
Shower Remodel in Antioch
A Shower Remodel in Antioch usually means rebuilding a shower that has failed, not just resurfacing one that looks tired. In the tract homes off Dallas Ranch Road or around James Donlon Boulevard, we regularly tear out builder-grade shower pans that have separated at the wall corners because the slab underneath moved. The first question we ask is not about tile color. It’s whether the door frame above the shower is sticking, because that tells us the soil is active.
Costs for a shower remodel here run $3,000 to $8,500 for a straightforward replacement, and $4,500 to $12,000 for a full walk-in shower installation with new waterproofing and fixtures. The spread comes down to size, waterproofing method, and whether we’re correcting framing or rough-in damage left behind.
Waterproofing That Moves With The House
We specify bonded waterproofing membranes, not just cement board with a paint-on sealer. The membrane flexes with minor slab movement instead of cracking. We also use marine-grade stainless drains and fasteners in Antioch because the delta wind corridor carries moisture and salt air that rusts standard hardware at the cut edges within a few years.
Glass And Hardware Built For Delta Wind
Frameless glass shower enclosures in Antioch need stainless hinges and clips, not plated zinc. We’ve replaced enough corroded pivot hinges near the Carquinez Strait wind path to know the cheap spec fails early. When you pick a frameless enclosure, we quote stainless hardware from the start, and we explain why it costs more up front.
Tub to Shower Conversion in Antioch
A Tub to Shower Conversion in Antioch costs $3,500 to $10,000, and it’s the most common request we get from homeowners in the boom-era tracts who want a step-in shower instead of a tub they never use. The job involves pulling the tub, checking the drain rough-in, rebuilding the pan, and waterproofing the entire surround before tile goes up.
The Antioch-specific part is the slab. In the 1995 to 2007 production homes south of Highway 4, the concrete under the tub often has hairline movement from clay swell. We probe for that before we quote, because if the slab is moving, a new acrylic pan without a flexible membrane will crack at the corners the same way the old one did.
When The Drain Has To Move
Sometimes the tub drain sits in the wrong spot for a shower. Moving a drain in a slab foundation means cutting concrete, which adds cost. That’s part of why the range goes from $3,500 up to $10,000. We’ll show you the line item so you know exactly what you’re paying for.
Accessibility Without Looking Clinical
Many Antioch homeowners are converting tubs for aging-in-place reasons. A curbless shower entry with a linear drain, grab-bar blocking behind the tile, and a fold-down seat can all be built in without making the room look institutional. We plan the blocking during rough-in so it’s there when you need it, not retrofitted later.
Trusted Brands We Service in Antioch
We install and service fixtures and finishes from Kohler, Moen, Cambria, Silestone, Caesarstone, KraftMaid, and Wellborn. Our countertop fabricators work with Cambria and Silestone quartz, which carry their own manufacturer warranties alongside our 365-Day Done Right Promise. Because we stock common parts locally and have established supply relationships with these brands, turnaround on an Antioch bathroom remodel is faster than a shop that orders everything piecemeal after contract signing.
Common Bathroom Remodeling Problems We See in Antioch Homes
- Shower pan separation at wall corners. Expansive Montezuma clay shrinks in the dry season and swells when winter rains come, moving the slab enough to pull apart builder-grade shower pans and crack grout lines at the base of the walls.
- Corroded vanity and mirror hardware. The delta wind corridor pushes salt-laden moisture through window and vent openings, and standard drywall screws and zinc hinges rust at the cut edges in a few years, leaving rust streaks under vanity tops and around mirror brackets.
- Fast caulk and grout degradation. Summer highs of 95 to 105°F and persistent 25 to 30 mph winds bake caulk joints and dry out grout. Inland-spec materials need recaulking within one to two years in Antioch, where the same spec might last five years in a cooler, calmer city.
- Sticking doors and drywall cracks above shower openings. Many homeowners in the Lone Tree Way corridor think their house is settling. It’s often slab heave from clay soil moving door frames during the wet season, and it shows up as diagonal drywall cracks at the top corners of bathroom doors.
Pricing for Bathroom Remodeling in Antioch, CA
We give written prices before any work starts. Not a verbal ballpark, not a range on a business card. A line-item number you can hold us to. Here’s what those numbers look like for Antioch homeowners right now:
| Service | Typical Antioch Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
What moves the price: moving plumbing, concrete cutting, waterproofing method, tile selection, glass thickness, and whether we find framing or rough-in issues behind the old shower. We do not give allowance games or surprise change orders. If we uncover something during demo, we stop and show you. The written price is the written price unless you ask to change the scope. Call (936) 259-2607 for a free estimate and we’ll put the number in writing.
We Also Serve Cities Near Antioch
Penhallow Remodeling serves all of Bathroom Remodeling in Antioch plus the surrounding East Contra Costa communities. We regularly schedule bathroom remodels and shower replacements in Oakley, Pittsburg, Clayton, and Brentwood. If you’re a few minutes outside Antioch proper, you still get the same written quote, the same defined arrival window, and the same 365-Day Done Right Promise.
Serving Antioch, CA - Our Local Coverage Area
We’re a General Contractor in Antioch and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Bathroom Remodeling in Antioch
The expansive Montezuma clay under many Antioch slabs swells in winter and shrinks in the hot dry season, and that movement shifts the framing around your bathroom door. The door sticking and the diagonal drywall crack above the shower opening are usually slab heave, not settling. We probe for this before quoting any interior work so we’re not tiling over a moving substrate. Call (936) 259-2607 for a free estimate.
The coastal-spec we use in Antioch includes marine-grade stainless steel drains, hinges, and fasteners, a bonded waterproofing membrane instead of basic cement board, and sealed stone-to-wall joints rated for high heat and persistent wind. It runs roughly 10 to 18 percent more than an inland-spec bid that uses plated hardware, standard drywall screws, and caulk joints. The inland spec lasts one to two years before caulk fails and hardware rusts; the coastal spec is built for a decade. We quote both numbers and explain the difference.
Yes. A tub-to-shower conversion that changes the drain location, moves plumbing, or alters the wet wall typically requires a building permit in Antioch. If we’re keeping the existing drain and only replacing the tub with a shower pan, the scope may fall under a remodel without a plumbing change, but we verify that on each job. Penhallow Remodeling pulls the permits and coordinates inspections as part of the written price.
We use a written scope with a fixed price, and any change order is written, priced, and signed before we do the work. We do not use open-ended allowances where the tile budget can swell after demolition. If you pick a different tile, we show you the line-item delta and you approve it in writing. The number on day one is the number on the invoice unless you change the scope yourself.
Antioch sits at the inland end of the Carquinez Strait wind corridor, where 25 to 30 mph delta winds push moisture through wall penetrations around vent pipes and windows. That moisture condenses inside wall cavities and shows up as rusted fasteners in vanity hardware, failing caulk around tubs and showers, and grout that darkens from trapped humidity. We look at the exterior envelope when we open a bathroom wall because the two are connected.
Call (936) 259-2607 to schedule your free estimate. We’ll walk the space with you, explain what we see, and hand you a written number and a written guarantee before a single tile is pulled.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving Antioch and East Contra Costa County. Operating under The Kingswell Way since 2004.