Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterCWS Construction in San Francisco, CA | Rowan Construction Group
We’re Rowan Construction Group, and we provide independent CWS fixture and cabinet service across San Francisco, from the Sunset to Noe Valley. We also handle CWS repair in Oakland when projects extend across the Bay. We’re not manufacturer-affiliated, which means we’ll tell you honestly when an OEM part is worth it and when a quality aftermarket valve will outlast the fixture. The thing that separates our CWS work here: we know the difference is rarely the product itself. It’s the 50-year-old lath-and-plaster wall behind it, the fog wicking moisture into the toe-kick, the DBI plan check that triggers the minute you move a supply line. Call (470) 298-9650 for a free estimate on any CWS vanity, shower, or cabinet job in San Francisco.
Why San Francisco Residents Choose Us for CWS Service
Most CWS fixtures fail in San Francisco for the same reasons every other brand fails here: marine fog, old framing, settling foundations, and bathrooms that were never vented properly in the first place. Our crews have worked through those conditions on thousands of residential projects since 2007, and we’ve learned where CWS products hold up and where they don’t. Owner Grant Rowan trained in construction technology before ever swinging a hammer on a paying job, and that background in framing and estimating shapes how we scope every CWS install. We’re not guessing when we tell you your lath-and-plaster wall needs blocking to hold a new CWS Estate vanity. We’ve already done the math on the shear load.
We also maintain a CWS sales & service practice that covers the full range of the brand’s residential product lines, with an emphasis on bathroom vanities, walk-in showers, and cabinet systems. If you’re in San Francisco proper or anywhere in our San Francisco service area, we’ll arrive with the parts and the plan. Written price before any work starts, every time. That’s Clause 1 of the Haven Standard, and it applies to a $945 vanity pull-and-reset the same as a $141,600 ADU.
Common CWS Construction Problems We Solve in San Francisco
- Soft-close hinges and drawer slides seized from fog-borne salt and moisture. The Sunset and Outer Richmond see marine fog 200-plus days a year. The salt and humidity work into CWS silent-close mechanisms, causing binding and misalignment. We replace the hardware with sealed or aftermarket slides rated for coastal exposure, and we adjust the cabinet face frames so doors stop fighting the frame.
- Vanity toe-kicks and baseboards swelling and delaminating in pre-1950 flats. Most San Francisco bathrooms built before modern code rely on a single undersized exhaust fan, or none at all. When a CWS vanity sits against an exterior wall in a 1930s Edwardian, moisture collects at the base, the MDF core swells, and mold develops behind the cabinet. We see it constantly.
- P-traps and supply lines corroding from original galvanized plumbing. Marina and North Beach retrofits often still have galvanized steel water lines from the original build. CWS supply lines and traps installed directly onto galvanized corrode faster at the threads. We use dielectric unions and replace the worst sections during fixture swaps.
- Countertop seams failing over settling bay-fill foundations. South of Market and Mission Bay sit on loose fill. When the slab settles, even a quarter inch, the seam on a CWS vanity top opens up. We address the shimming and support before redoing the seam, or you’ll be redoing it again next year.
- CWS walk-in shower pans squeaking or flexing over old subfloor. In any San Francisco building over 70 years old, the subfloor has moved. A CWS shower pan installed over an unlevel or flexible substrate will flex and eventually crack at the drain connection. We level and reinforce before the pan goes down.
BeforeAfterCWS Service in San Francisco: What Local Conditions Mean for Your Equipment
Here’s the fact most CWS owners in San Francisco don’t learn until the inspector arrives: the Department of Building Inspection requires plan check for any plumbing or fixture relocation in a building over 50 years old. That covers nearly every Victorian and Edwardian in the city. When we replace a CWS vanity in a 1905 row house, we almost always have to show structural attachment to unreinforced lath-and-plaster walls to pass inspection. That means adding blocking behind the wall, anchoring the vanity to actual framing, and documenting it for the permit file. It’s not a CWS problem. It’s a San Francisco structural reality, and any contractor who skips that step leaves you with a vanity that fails final inspection or, worse, pulls off the wall in a quake. This is one of the few places in the country where a bathroom vanity install can trigger a seismic review, and we plan for it on the first site visit, not the day the inspector calls it out.
You can see the same discipline in a job we did last spring in Noe Valley. A CWS Estate 48-inch vanity in an Edwardian flat had seized soft-close hinges from bathroom humidity and a toe-kick swollen with dry rot from a leaking tub. We pulled the DBI permit, added blocking behind the lath-and-plaster wall to meet shear requirements, and installed the new CWS Estate vanity with sealed seams. Inspection passed with no rework. That’s the difference between knowing the product and knowing what the product has to survive in this city.
CWS Models & Products We Service in San Francisco
We work on the full residential CWS line: Estate Series vanities, ProLine faucets and shower trim, Modular Cabinet Systems, and SilentClose toilet seats and hinges. When a fixture is under warranty and the finish has to match exactly, we use CWS OEM parts. When a CWS line is out of production, or the OEM soft-close mechanism has a known failure pattern in coastal fog, we stock high-quality aftermarket valves, P-traps, and slide mechanisms that often outlast the original. For CWS vanities with swollen MDF cores, we’re straight with you: replacement beats repair. No matter which direction the job goes, you get a written price before we touch a tool, and a documented photo record when we leave.
CWS Service Pricing in San Francisco
San Francisco CWS work falls into predictable ranges. Here’s what we quote across the city.
| Service | Price Range |
|---|---|
| Bathroom Vanity Installation | $945-$3,540 |
| Walk-In Shower Installation | $5,310-$14,160 |
| Cabinet Installation & Refacing | $4,720-$15,340 |
| Backsplash Installation | $945-$2,950 |
| Small Bathroom Remodel | $5,900-$14,160 |
The price moves based on what’s behind the wall: lath-and-plaster blocking, galvanized supply lines, rotted subfloor, DBI plan check requirements. A vanity swap in a 1980s condo is a one-day job at the low end of the range. A walk-in shower in a 1908 Edwardian with seismic retrofit requirements lands at the top. Call (470) 298-9650 and we’ll walk the job and put a written number in your hand. Free estimate, flat price, signed change order before anything changes.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - CWS Construction in San Francisco
Yes, in most cases. The San Francisco Department of Building Inspection requires plan check for any plumbing or fixture relocation in a building over 50 years old. If the new CWS vanity is going in the exact same footprint with no supply or drain line movement, you may qualify for over-the-counter approval. If we’re moving a supply line or changing the trap location, expect full plan check and a longer timeline. We handle the permit on every job and tell you during the estimate which path applies to your building. Call (470) 298-9650 and we’ll confirm for your specific flat.
The ocean fog carries fine salt and constant moisture, and CWS soft-close hinges and slides are not sealed against that exposure. Over a few years, the internal dampers corrode and the mechanism binds. We install aftermarket slides rated for coastal environments and, where the cabinet design allows, add small ventilation gaps to reduce trapped humidity. Repairs are covered under our 365-Day Done Right Promise if the original work doesn’t hold up.
Sometimes. If CWS still produces the finish in a current line, we order the OEM part and match it exactly. If the line is discontinued, we work with a local finishing shop to match the color and sheen, though we’ll be upfront that an exact match on a faded vanity is never perfect. In some cases, refinishing the whole vanity face is the cleaner result. Bring us a photo or a door sample during the estimate and we’ll tell you realistically what’s possible.
In the Marina, it’s often both. The original galvanized supply lines in those buildings shed rust particles that score the valve seats, and the resulting drip gets worse when building pressure runs high. We’d check the pressure regulator first, then pull the CWS valve cartridge. If the valve body is scored, an aftermarket replacement often outperforms the OEM here because it’s rated for sediment-heavy water. Call (470) 298-9650 for an exact quote. Estimates are free.
The fix starts with airflow. In pre-1950 flats where the bath fan moves almost no air, we recommend upgrading to a properly sized exhaust fan before or during the vanity install. Then we seal the vanity back and toe-kick against exterior walls, use moisture-resistant MDF or plywood where the original swelled, and leave a small gap at the bottom for air circulation. In the Sunset and Outer Richmond, where fog is constant, these steps are not optional if you want the new CWS vanity to last.
Service Areas Near San Francisco
We serve all of San Francisco and the surrounding cities where older housing stock and coastal conditions create similar CWS challenges. That includes San Jose to the south, where the fog is lighter but the pre-1940 stock is just as common. We also take on larger projects across the metro, with comparable service in CWS service in Fort Worth and CWS service in Fresno. If you’re within an hour of San Francisco, we’ll come look at the job.
Book Your CWS Service in San Francisco Today
If you have a CWS vanity, shower, or cabinet that’s failing in San Francisco, call (470) 298-9650. We’ll schedule the estimate, walk the space, and give you a written price before you commit to anything. Measure twice, say it once, show your work. That’s how we’ve run every job since 2007, and it’s the only way we know to run one in this city.
Written by Grant Rowan, Owner at Rowan Construction Group, serving San Francisco since 2007.