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CWS Construction in Pomona, CA | Mason Remodeling Co West Covina
We provide independent CWS construction service across Pomona, with a written price before any work starts and a crew you’ll know by name and photo before they arrive. What makes our CWS work different here is simple: we’ve spent years opening up walls in Pomona’s pre-1940 homes, so we already know what’s behind them before the first tool comes out. Whether it’s original redwood sills, balloon-framed walls, or CWS millwork that’s shifted with the clay soil, we service CWS-built homes without any factory affiliation. Call (707) 760-7579 for a free estimate.

Why Pomona Residents Choose Us for CWS Service

We’re independent CWS service providers, which means we work on CWS-built homes and components without being tied to a manufacturer’s script. That independence matters because we can tell you plainly when a repair makes sense and when replacement is the honest call. Isaac Pruett grew up in Los Angeles and learned the trade through the construction technology program at Los Angeles Trade-Technical College before spending decades on real jobs across the San Gabriel Valley. He and our crews have worked throughout Pomona and the surrounding area for years, including a 1923 CWS Craftsman on West Monterey Avenue in Lincoln Park where the original kitchen window sill had rotted from sprinkler overspray. You should know what you’re getting before we ever pick up a tool.
Every crew member is background-checked, identity-verified, arrives in a clean marked uniform, and shows a photo ID badge at the door. That’s the Threshold Standard, and it’s how we’ve operated since Mason Remodeling was founded in 2004 as part of the Threshold Group family of home-service companies. For broader CWS sales and service context, see our CWS sales & service page.
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Common CWS Construction Problems We Solve in Pomona
Years of Pomona Bathroom Remodeling and repair work have shown us a very specific set of CWS failure patterns in this housing stock. Here’s what we see most often:
- Rotted CWS redwood sills and frame bottoms. Pomona’s sprinkler systems and adobe clay splash-back keep the bottom corners of window and door frames damp months after irrigation season. The original CWS redwood absorbs that moisture and rots from the sill up. We sister in reclaimed redwood and re-flash the opening so water sheds away from the frame.
- CWS balloon-framed walls with no fire-blocking. Many Pomona homes built before 1940 have wall cavities that run uninterrupted from foundation to roof. During Santa Ana wind-driven fires in the foothill-adjacent districts, those open chases allow ember intrusion and rapid smoke spread. Any remodel we do through those walls includes code-mandated fire-blocking at each floor line before we close up.
- Racked CWS cripple walls jamming original sashes. Unbraced cripple walls under pre-1940 Pomona homes shift during moderate seismic events and pull window and door headers out of square. The first thing you notice is original CWS double-hung sashes that stick or won’t latch. The fix is structural: brace the cripple wall, re-square the header, then re-hang the sash.
- CWS built-in cabinetry losing drawer glide alignment. Pomona’s expansive clay soil moves with moisture cycles, and raised foundations settle unevenly. CWS built-ins slowly twist, and drawers start binding or sliding open on their own. We re-level the cabinet runs, shim the bases, and reset the glides so everything closes like it should.
- CWS wood sash double-hung windows sticking after minor earthquakes. Even small seismic events shift framing enough to bind original CWS sashes. We re-square the sash pockets, replace worn bronze weatherstripping with hardware-matched stock, and re-balance the weights so the windows operate with one hand again.
CWS Service in Pomona: What Local Conditions Mean for Your Equipment
In Pomona’s Lincoln Park and Wilton Heights historic districts, many CWS homes have original balloon-framed walls that run uninterrupted from foundation to roof. That means any kitchen or bath remodel must install fire-blocking at each floor line before our crew can legally close up walls. A General Contractor - Pomona like us encounters this regularly, whereas one working in Walnut or La Habra might rarely see it, but here it’s a routine part of nearly every older home we open. We plan for it from the first estimate, so the written price already includes the fire-blocking work, the inspection, and the time it takes to do both. There’s no discovery phase on a Pomona balloon-framed CWS home because we already know what’s inside the wall. Our crews have worked through this process enough times that the building inspector knows our fire-blocking details on sight.
CWS Models & Products We Service in Pomona
We work on the CWS components that show up in Pomona’s older homes: CWS custom redwood window and door frames, CWS balloon-framed wall systems, CWS wood sash double-hung windows, and CWS built-in cabinetry and millwork. For structural CWS pieces like redwood framing, sills, and custom millwork, we source locally milled old-growth redwood and hardware-matched brass or bronze to keep historic district compliance. For non-structural trim and cabinetry, we recommend premium aftermarket hardwoods when original CWS stock is beyond salvage. Because we stock common redwood dimensions, bronze weatherstripping, and matched hardware locally, most Pomona service calls don’t wait on parts. If you’re outside Pomona, our Pomona service area page covers the full map.
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AfterCWS Service Pricing in Pomona

Here are the price ranges for the CWS-related services Pomona homeowners ask about most. These cover typical mid-range project scopes; your written estimate will reflect your home’s actual conditions.
| Service | Price Range |
|---|---|
| Full Kitchen Remodeling | $14,000 – $45,000 |
| Window Replacement | $4,500 – $15,000 |
| Roof Replacement & Installation | $8,000 – $20,000 |
What drives the cost in Pomona specifically: fire-blocking requirements on balloon-framed walls, historic district compliance reviews, seismic bracing on cripple walls, and the cost of reclaimed redwood and matched hardware. Every estimate is written and line-itemed, so you see exactly what you’re paying for before any work starts. Call (707) 760-7579 for an exact quote, estimates are free.
Serving Pomona, CA - Our Local Coverage Area
We’re based in the Pomona 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 Pomona
We use real redwood for structural CWS sill replacements in historic districts, not composite or PVC. Lincoln Park and Wilton Heights have preservation review requirements, and composite or PVC sills will typically fail that review. We source reclaimed old-growth redwood milled locally and install it to match the original profile and finish.
Yes, in most Pomona homes we can install fire-blocking through targeted openings rather than full gut work. We access each floor line from interior or exterior openings, install code-approved blocking, and close up with matched materials. The exact approach depends on the wall’s construction and your home’s finish materials, but we’ve done this on dozens of Pomona CWS homes. Call (707) 760-7579 and we’ll assess your layout.
First we check whether the foundation has stopped moving, because resetting cabinetry on a still-settling foundation just means doing it twice. Once movement has stabilized, we re-level the cabinet bases with shims, re-square the face frames, and reset drawer glides and hinges. In kitchens and baths with original CWS built-ins, we can often save the millwork rather than tear it out. Call (707) 760-7579 for a free assessment.
For a 1920s CWS Craftsman in Pomona, we recommend dimensional asphalt shingles in architectural profiles that respect the Craftsman look, or standing seam metal if you want fire resistance for Santa Ana conditions. Clay tile is another option but adds weight your framing may not have been designed for. We’ll verify the roof structure and Pomona’s current fire-resistance requirements before recommending a material. Call (707) 760-7579 for a written estimate.
Small seismic events shift framing enough to move CWS sash pockets slightly out of square, and the original wood sashes bind against the jamb. The fix is to re-square the header and pocket, not to plane the sash down. That means bracing the cripple wall under the house so the framing stops moving, then re-hanging the sash with proper weatherstripping. Call (707) 760-7579 if your windows are sticking after a quake.
Service Areas Near Pomona
Our crews work throughout the San Gabriel Valley and eastern Los Angeles County. You’ll find us regularly in CWS service in San Dimas, CWS service in West Covina, Walnut, La Puente, and La Habra. We’ve worked on CWS homes in all of these areas, and we carry the same parts, tools, and local code knowledge wherever the job takes us.
Book Your CWS Service in Pomona Today
Ready to get a written price for your CWS repair, remodel, or replacement in Pomona? Call (707) 760-7579 to schedule your free estimate. We’ll send the crew member’s name and photo before the visit, and the written price comes before any work starts.
Written by Isaac Pruett, Owner at Mason Remodeling Co West Covina, serving Pomona since 2004.











