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CWS Home Additions & ADU: The Miami Owner’s Guide
If you’ve got a CWS-branded home addition or ADU project that stalled, was built wrong, or needs a serious repair, we can take it over. Installed pricing for a CWS Home Addition in Miami runs $53,100 – $153,400, and an ADU runs $106,200 – $259,600, depending on square footage, foundation work, and whether we’re fixing someone else’s mess or starting clean. Most owners call us when they notice water intrusion at the roofline connection, uneven floors where the new slab meets the original foundation, or drywall cracks spreading along the new framing. That’s usually the moment they realize the original crew cut corners they didn’t know to look for.
Sawyer Remodel Miami is an independent contractor, not affiliated with CWS. We work on CWS-branded additions and ADUs all the same, because the framing, tie-ins, and finish work follow the same Florida Building Code whether the sign out front says CWS or not. Luca Romano has been tearing apart bad work long enough to know exactly what the original installer was thinking, and what they skipped.
Which CWS Models This Applies To
CWS home additions and ADUs aren’t a single product line with model numbers the way a water heater or a garage door opener is. They’re site-built structures, usually stick-framed additions or prefabricated ADU shells that get finished on-site. The compatibility question isn’t about a model number, it’s about how the original structure was tied into your existing home and what materials were used.
Here’s what we actually check when we show up:
– Roof tie-in method: Was the new roof properly flashed and integrated, or did they just butt the shingles up and caulk the seam? In Miami, that caulk fails inside 12 months and water gets behind it.
– Slab and foundation connection: Did the new slab get doweled into the existing foundation, or is it just floating next to it? Floating slabs shift, and your floors telegraph that movement.
– HVAC and electrical integration: Did they extend the existing system correctly or splice in undersized duct runs? Undersized runs mean one room never cools right, and you’ll feel it by August.
– Manufacturer labels on windows, doors, and trusses: CWS projects sometimes use specific window and door packages. We match to the existing labels so replacements look and perform the same.
For OEM versus aftermarket, there’s no meaningful “OEM” for framing lumber or drywall. The real decision point is finish materials: if your CWS addition has a specific window line, door hardware, or cabinet series, we match it. If it’s a generic spec, we bid quality equivalents and tell you before we buy anything.
Styles & brands we work with
Key Takeaways
– CWS Home Addition in Miami: $53,100 – $153,400 installed
– CWS ADU in Miami: $106,200 – $259,600 installed
– We match existing window, door, and finish packages so the repair blends
– 365-Day Done Right Promise on every project, in writing
– Call (850) 801-8046 for a free estimate, not a sales pitch
Signs Your CWS Home Additions & ADU Is Failing
Here are the five most common failures we walk into on CWS additions and ADUs across Miami, and what they actually mean:
- Water stains or mold at the roofline where the addition meets the original house. This is the classic failed tie-in. The flashing was installed wrong or not at all, and Miami’s afternoon downpours find every gap. By the time you see the stain, the sheathing behind it is already degrading.
- Cracks in the drywall along the new wall-to-ceiling seams, especially near corners. The addition is moving. Sometimes it’s normal settling, sometimes it’s a slab that wasn’t tied properly. The pattern of the cracks tells us which one you have.
- Floors that slope or bounce where the new structure meets the original slab. If the new foundation wasn’t doweled into the existing one, it floats. In Miami’s sandy soil, floating slabs shift seasonally with the water table, and you’ll feel it underfoot.
- Doors and windows that stick in the summer but operate fine in winter. Florida humidity swells wood and compresses poorly set frames. If the original crew hung doors with no room for expansion, you’ll fight them every June through October.
- The HVAC in the new space never keeps up. Undersized ductwork or a system that wasn’t recalculated for the added square footage. The original installer saved money, and you pay for it every month on your power bill.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included
For a CWS Home Addition in Miami, plan on $53,100 – $153,400 depending on size, complexity, and how much of the existing work we have to correct. ADUs run $106,200 – $259,600. Here’s what drives the number:
| Scope | Miami Price Range |
|---|---|
| Home Addition (repair or full build) | $53,100 – $153,400 |
| ADU Construction | $106,200 – $259,600 |
| Garage Conversion to living space | $35,400 – $94,400 |
| Structural repair only (foundation tie-in, roof flashing, framing correction) | $5,900 – $25,400 |
Every bid we write is a fixed price. The number you approve is the number on the invoice. If we open a wall and find something the original crew buried, we photo it, we show it to you, and we agree on the change before we spend a dollar of your money. No change orders that show up as a surprise at the end. The work is covered by the 365-Day Done Right Promise: if it’s not done right, we make it right. In writing, on every job.
DIY or Call Us?
You can safely check a few things on your own if you suspect your CWS addition is failing. Look for visible water stains at the roofline after a heavy rain. Run your hand along the drywall seams and note where cracks are tight versus open. Watch whether doors stick more in the afternoon than the morning. Those observations help us diagnose faster.
But this is not a DIY repair, and honestly, it’s not even a handyman repair. Correcting a failed roof tie-in means pulling back shingles, repairing or replacing flashing, and sometimes resheathing rotted decking. Fixing a floating slab means cutting and doweling concrete. This kind of work is structural, it’s expensive to get wrong, and getting it wrong can mean water in your walls for another year before you catch it. Luca learned at Los Angeles Trade-Technical College that a building only ever gives you one joint to get right. The second attempt always costs more. If you’re anywhere near Miami and that CWS addition is giving you problems, call (850) 801-8046 and let us put eyes on it before it gets worse.
FAQs
How long do CWS home additions and ADUs last in Miami?
A properly built CWS home addition or ADU in Miami should last 50 years or more for the structural shell, but the finish materials age on Florida’s schedule, not the builder’s. Windows and doors take a beating from salt air near the coast, roofs see 80- to 100-degree heat plus daily thunderstorms for half the year, and exterior caulk and flashing fail in 5 to 10 years if they weren’t installed meticulously. The original construction quality matters more than the CWS name on the project. Call (850) 801-8046 and we’ll tell you honestly what your structure has left in it.
Can a failing CWS home addition be repaired instead of rebuilt?
Almost always, if you catch it before water has been sitting in the walls for years. Failed roof tie-ins get reflashed and the rotted sheathing gets cut out and replaced. Floating slabs can be stabilized with helical piers or doweled with epoxy. Undersized HVAC runs get recalculated and corrected. The only time we recommend a tear-out is when the framing itself is compromised or the original work violated code so badly that patching it would be irresponsible. Estimates are free, so call (850) 801-8046 and we’ll give you a straight answer in writing.
How long does it take to fix or replace a CWS home addition or ADU in Miami?
A targeted structural repair like a roof tie-in or foundation correction takes 3 to 7 days. A full redo of a 400-square-foot addition runs 6 to 10 weeks, and a complete ADU runs 3 to 6 months depending on permitting and material lead times. We make our own schedule and we work it with a live crew, not subs juggling three jobs. You’ll get photo updates before and after every major phase, and a live arrival time whenever we’re coming. Call (850) 801-8046 for a timeline specific to your project.
Do you stock the materials to match my CWS addition?
We stock common Florida-spec dimensional lumber, flashings, and drywall on our trucks, but anything matched to your CWS addition’s existing finish package, windows, doors, or cabinetry gets ordered to spec. We’ll match what’s there, or if you want an upgrade, we’ll quote the new material and the existing match side by side. You pick, with the actual numbers in front of you. Call (850) 801-8046 for a free estimate.
Call Sawyer Remodel Miami
If you have a CWS home addition or ADU in Miami that’s failing, or a project that was never finished right the first time, call us at (850) 801-8046. You’ll get a live person, a scheduled visit, and a written price before any work starts. Good work doesn’t need a sales pitch.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Miami at Sawyer Remodel Miami, serving Miami and nearby areas.
