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CWS Home Additions & ADU: The Pompano Beach Owner’s Guide
We stock and install CWS-compatible components for home additions and ADU projects in Pompano Beach, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for full ADU construction. Most CWS structural hardware, connection systems, and waterproofing assemblies are available through our supply chain with lead times that rarely exceed two weeks. Owners usually discover a CWS component failure when they spot water intrusion at addition-to-existing seams, sagging headers over new openings, or separation at the ledger board where the addition ties into the original structure - problems that tend to surface during Pompano Beach’s summer storm season when wind-driven rain finds every gap.
Which CWS Models This Applies To
CWS Home Additions & ADU systems span several product generations, and matching the right component starts with reading the manufacturing stamp. Pre-2018 CWS additions used a 2×8 nominal ledger system with through-bolt spacing at 16 inches on center; post-2018 models shifted to engineered 1-3/4-inch LVL ledgers with Simpson Strong-Tie SDS screws at 12 inches on center. The post sleeve system changed too - older CWS models used a 4×4 nominal post base with an embedded J-bolt, while current spec calls for a PBS44A or similar post base with 1/2-inch anchor bolts into an engineered footing.
To identify your CWS series, check the stamped metal tag on the primary ledger board, usually located on the interior face near the addition’s main beam connection. If the tag reads “CWS-HA-2016” or earlier, you’re on the pre-2018 hardware suite. For waterproofing, the critical split is between the original CWS peel-and-stick membrane (gray backing, 36-inch rolls) and the current fluid-applied system - they’re not interchangeable without substrate prep changes. We source OEM CWS hardware through regional distribution, but for structural connectors we often spec Simpson or USP equivalents that carry the same ICC-ESR ratings at lower cost, which we note line-by-line in our written quotes.
Signs Your CWS Home Additions & ADU Is Failing

- Water staining at the interior ceiling line where addition meets existing house. This points to failed step-flashing or a compromised self-adhered membrane at the roof-wall intersection, common in Pompano Beach where thermal cycling loosens laps faster than in cooler climates. The water follows the top plate and drips at the first drywall seam it hits.
- Soft or bouncy floors in the addition, especially near mid-span. The CWS engineered joist system may have lost hanger connection integrity, or the LVL beam is experiencing excessive deflection from undersized bearing points. We measure deflection with a laser level; anything over L/360 for living space needs correction.
- Cracks in exterior stucco running diagonally from window corners. These track back to missing or torn lath at the CWS weep screed detail, or inadequate expansion control at the addition-to-existing joint. In Pompano Beach’s salt-air environment, corroded lath accelerates the crack pattern.
- Doors that swing open or stick seasonally. This signals differential settlement between the original foundation and the CWS addition’s footing system, often from inadequate soil compaction during original construction or a shallow footing that heaves in wet seasons.
- Visible rust streaks below beam hangers or post bases. The CWS-specified G90 galvanizing has a finite lifespan in coastal Florida; once the zinc layer is breached, the hanger degrades rapidly. We replace with hot-dip galvanized or stainless per the current Florida Building Code.
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AfterReplacement Cost & What’s Included
For CWS home addition and ADU work in Pompano Beach, our installed pricing falls in these ranges:
| Home Addition (typical scope) | $45,000 - $130,000 |
| ADU Construction (detached, full utility) | $90,000 - $220,000 |
| Garage Conversion to ADU | $30,000 - $80,000 |
| Structural Ledger/Beam Repair (localized) | $4,500 - $12,000 |
| Waterproofing Membrane Replacement | $3,500 - $9,500 |
What drives the range: footing depth and soil conditions, whether the existing structure needs supplemental framing to carry the addition load, utility extension distance, and finish selections. Every quote we deliver is a flat written price with line-item breakdown - under Clause 1 of the Haven Standard, the number is fixed before anyone picks up a tool. Our 365-Day Done Right Promise covers all CWS-compatible work, and every project receives a documented photo record as standard deliverable, not an upgrade.
DIY or Call Us?

There’s a clear line between what a CWS owner can safely assess and what requires a licensed contractor in Pompano Beach. You can check for obvious symptoms - water stains, cracked stucco, sticking doors - and photograph them for reference. You can also verify your CWS model year from the ledger tag and measure rough opening dimensions if you’re considering a component swap.
Where DIY goes wrong: structural connection repair, footing evaluation, and anything involving the roof-to-wall waterproofing. The Florida Building Code requires licensed contractors for structural modifications, and the liability exposure on an addition that fails in a hurricane is not worth the savings. The high-tension hardware in CWS post-and-beam systems can release unexpectedly if disassembled incorrectly. We carry the full Simpson connector inventory, moisture barriers, and fastening systems on our trucks - call (754) 714-6540 to schedule your free estimate and we’ll assess what’s actually failing, not what appears to be.
FAQs
Structural hardware in coastal Broward County typically shows meaningful corrosion at 12 to 18 years if the original spec was G90 galvanized; stainless or hot-dip galvanized assemblies reach 25-plus years. The waterproofing membrane lifespan is closer to 10 to 15 years depending on sun exposure and whether the detail was lapped correctly at installation. Call (754) 714-6540 and we’ll inspect your CWS addition’s current condition at no charge - estimates are free.
Isolated issues like a single corroded hanger or localized membrane tear can sometimes be repaired, but we won’t recommend a patch when the systemic condition points to wider failure. In Pompano Beach, we’ve learned that repairing one leaking ledger detail while ignoring the adjacent five usually means a callback within two years. We document what we find with photos and give you both options in writing. Call (754) 714-6540 for the full picture - estimates are free.
Localized structural repairs run 2 to 5 business days; full waterproofing replacement on an existing addition typically takes 4 to 7 days weather permitting. ADU construction from foundation to certificate of occupancy averages 4 to 6 months in Pompano Beach, driven by Broward County’s plan review and inspection schedule. We sequence our crews tightly so nothing sits idle while subcontractors wait on each other. Call (754) 714-6540 to review your timeline - estimates are free.
We stock Simpson structural connectors, moisture barriers, and fastening systems that meet or exceed CWS original specifications; true OEM CWS-branded hardware ships from regional distribution with lead times of 5 to 10 business days. For urgent water intrusion, we can install compatible rated components immediately and swap to exact OEM later if your project documentation requires it. Call (754) 714-6540 to confirm current availability for your CWS model - estimates are free.
Rowan Construction Group Pompano Beach is an independent service provider and is not affiliated with CWS. We also stock and install compatible components for KraftMaid cabinetry systems, Cambria surfaces, and Silestone countertops as part of our full addition and ADU offering.
Grant Rowan and our crew have worked throughout Pompano Beach for years, including several complete gut-renovations along the older blocks near the historic Old Town district. We build the way Grant was taught: measure twice, say it once, show your work. That means a written price before any work starts, a signed change order before any deviation, and a photo record when we leave.
Call (754) 714-6540 to schedule your free estimate. We’ll review your CWS addition or ADU project line by line, and if you have a competitor’s written quote, we’ll give you a free second opinion - no obligation, no pressure, just the number in writing.
Written by Grant Rowan, Owner, Rowan Construction Group Pompano Beach at Rowan Construction Group Pompano Beach, serving Pompano Beach and nearby areas.







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