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CWS Home Additions & ADU: The Austin Owner’s Guide
If you own a CWS home with an addition or ADU that’s failing, we can help. Penhallow Remodeling Austin installs and repairs CWS-compatible home additions and ADU components, with full projects typically running $45,000 – $130,000 here in Austin. Most owners discover a problem when doors start sticking, drywall cracks appear along the roofline, or the mini-split can’t keep the ADU cool during a July afternoon. The good news is that a failed component doesn’t always mean a full teardown. We diagnose first, quote in writing, and use the same materials and methods we’d want on our own homes.
Which CWS Models This Applies To
CWS built homes and detached units across Austin over the years, and the additions vary by era: some are stick-built bump-outs, some are panelized ADUs, and some are converted garage spaces finished with CWS trim packages. The compatibility question usually isn’t about a serial number. It’s about wall thickness, roofline type, and the original framing method. Before we recommend a fix, we check the framing behind the failing area, the exterior cladding, and how the original CWS addition connects to the main structure. That junction is where Austin’s clay soil movement shows up first, and it’s the most common source of the cracking and door-binding owners call us about.
Owners often ask us about specific CWS-branded components like window package types, exterior door specs, or original flooring. The honest answer: most of what fails on a CWS addition is not proprietary. Standard dimensional lumber, standard drywall, and standard sheathing are what we’re repairing or rebuilding. The CWS-specific part is usually the trim profile or the original siding color. We match those carefully, but we don’t overcharge for a “proprietary” label when a quality aftermarket equivalent from our regular trade suppliers does the job just as well. We’re an independent Austin remodeling company, not affiliated with CWS, and our goal is to give you the most durable repair, not protect a brand’s parts markup.
Styles & brands we work with
Signs Your CWS Home Additions & ADU Is Failing
- Doors that stick or won’t latch in the addition. Austin’s clay soil expands and contracts with moisture, and a CWS addition on a slab or pier-and-beam foundation moves slightly with it. When the door frame is no longer square, the structure has shifted enough to need a look.
- Drywall cracks that trace the ceiling-to-wall corner. This usually means the addition’s roofline is moving independently from the main house. The crack is the symptom; the cause is often a failed connection or undersized beam at the original CWS framing junction.
- Soft spots in the floor near exterior walls. Water intrusion from failed flashing or a worn door sill rots the subfloor. By the time you feel the bounce, the repair is already beyond caulk and paint.
- The ADU’s mini-split runs constantly but the space stays hot. This often points to failed insulation or air sealing in the original CWS wall assembly, not a bad AC unit. Re-insulating a wall cavity is a faster and cheaper fix than replacing the system.
- Visible separation where the addition meets the house. A gap that opens and closes seasonally means the addition was tied in with a flexible joint that’s now failing. Left alone, it becomes a water entry point during Austin’s heavy spring rains.
See the difference
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AfterReplacement Cost & What’s Included
For CWS addition and ADU work in Austin, we price every job with a written number before any work starts. A full home addition runs $45,000 – $130,000 depending on square footage, roofline complexity, and finish level. A full ADU construction project lands between $90,000 and $220,000. A garage conversion typically falls between $30,000 and $80,000. Smaller repair work, like tying a shifted addition back to the main structure, is quoted per project after we open the area and document what we find.
Every quote includes the parts, labor, disposal, and the written workmanship guarantee we call the 365-Day Done Right Promise. If the repair fails inside the guarantee period, we come back and fix it at no charge. And if a repair fails after a return visit, the second trip is free too, no service call, no re-inspection fee.
DIY or Call Us?
Some things you can check yourself: a door that sticks is worth inspecting for loose hinge screws or swollen wood at the threshold. A small drywall crack under a quarter inch wide that hasn’t moved in a year is usually cosmetic. But if the crack is wide enough to fit a nickel, or it’s growing, or you see daylight through the gap between the addition and the main house, that’s a structural signal. Working on a failing wall-to-roof connection involves lifting and shoring, and doing it wrong leaves you with a bigger repair bill than you started with. If you’ve got a CWS addition that’s moving, call us at (325) 225-5429 and we’ll come look at it.
FAQs
A properly built CWS addition in Austin should last 30 to 50 years before major structural work, but the tie-in junction and exterior flashing usually need attention sooner. We see most owners doing significant repairs between year 15 and year 25, depending on drainage and sun exposure. Call (325) 225-5429 and we’ll inspect yours.
Yes, most of what fails on a CWS addition is repairable. The tie-in junction, flashing, subfloor, and insulation can all be fixed without tearing down the whole structure. Full replacement only makes sense when the framing itself is rotted or the foundation under the addition has failed.
A typical tie-in repair takes two to five working days, including drywall and finish work. Larger rebuilds take longer, and we’ll give you an arrival window and a written timeline before we start. Every job gets a clean worksite at the end of each day.
We keep standard framing materials, flashing, sill stock, and drywall on hand, and we pull remaining materials from the same trade suppliers we’ve used for over a decade. If your CWS addition has a specific trim profile or siding color, we match it from local Austin suppliers, usually within a few days. Tell us what you need, we’ll tell you what it costs, and we’ll go from there.
If your CWS addition or ADU is cracking, sticking, or leaking, don’t wait until the next rain. Call Trevor and the team at Penhallow Remodeling Austin at (325) 225-5429 for a free estimate. We answer the phone, show up when we say, and put the price in writing before any work begins.
Written by Trevor Nash, Owner, Penhallow Remodeling Austin at Penhallow Remodeling Austin, serving Austin and nearby areas.
