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Barrette Home Additions & ADU: The Fort Lauderdale Owner’s Guide
We stock and install Barrette-compatible structural components, fasteners, and finishing systems for home additions and ADUs in Fort Lauderdale, with typical installed projects ranging from $45,000 to $130,000 for additions and $90,000 to $220,000 for full ADU construction. Most Barrette part consultations can be scheduled within 48 hours, and we carry common Barrette connectors, post bases, and railing hardware on our trucks for same-day replacement when structural integrity is compromised. Homeowners usually discover a failing Barrette component during a permit inspection callback, when a deck or balcony connection shows corrosion after our salt-air seasons, or when an addition’s structural post settles unevenly and doors begin to stick.
Which Barrette Models This Applies To
Barrette’s residential structural line includes the Outdoor Living railing systems, the Structural Post series (4×4 and 6×6 nominal), and the T-Rail and Crossover connector families used in elevated decks, sunroom additions, and ADU exterior access points. The critical compatibility check is the post base dimension: Barrette’s standard 4×4 post base measures 3.5 inches square inside, while their heavy-duty 6×6 base measures 5.5 inches, and mixing these with pressure-treated lumber from different grading stamps will create a gap that accelerates rot in Fort Lauderdale’s humidity. To identify your exact part, look for the stamped model number on the underside of post caps or the embossed code on railing brackets, typically formatted as BRT-XXXX-YEAR.
We source OEM Barrette hardware through authorized distributors, though for certain post bases and connector plates we also stock Simpson Strong-Tie equivalents that meet or exceed the same load ratings at a lower unit cost. The decision point is usually the inspection history: if your Fort Lauderdale addition was permitted under the 2017 Florida Building Code or earlier, the inspector may flag a non-OEM substitution even when the engineering spec is identical, so we verify the permit file before ordering. For Coastal High Hazard Zone properties east of Federal Highway, we default to Barrette’s marine-grade stainless catalog regardless, since the salt spray degradation we’ve documented in Victoria Park and Rio Vista exceeds what standard galvanized hardware tolerates.
Signs Your Barrette Home Additions & ADU Is Failing

- Railing wobble or visible bracket corrosion. The powder-coated bracket conceals galvanic corrosion where dissimilar metals contact; once the coating cracks, Fort Lauderdale’s salt air accelerates pitting that reduces the bracket’s rated load capacity by half in as little as three years.
- Post base gaps or water pooling at the footing. Barrette’s standard post base includes a 1-inch standoff for drainage, but if the concrete footing settled or the base was installed without slope, water becomes trapped and wicks up the end grain of the post.
- Cracking in composite rail caps or top rails. Thermal expansion in direct south Florida sun causes Barrette’s PVC rail profiles to grow roughly 1/8 inch per 10 feet of length; if installers didn’t leave adequate expansion gaps at the ends, the profile buckles outward or splits at the fastening point.
- Stair tread deflection or stringer separation from the post. The stringer-to-post connection relies on a specific Barrette angle bracket with four 1/2-inch through-bolts; if even one bolt loosens, cyclic loading from foot traffic works the remaining bolts loose within a season of heavy use.
- Door frame misalignment in the addition’s exterior wall. When a Barrette structural post settles or the beam it supports deflects, the load path shifts and the framed opening twists; this is often the first interior symptom of a failing exterior connection.
Before
AfterReplacement Cost & What’s Included
| Component | Parts + Labor Range | Typical Timeline |
|---|---|---|
| Single post base replacement (4×4) | $350-$650 | 2-3 hours |
| Railing bracket set (10 linear feet) | $800-$1,400 | Half day |
| Structural beam connector repair | $1,200-$2,800 | 1-2 days |
| Full addition structural assessment + repair | $2,500-$6,000 | 2-4 days |
| Complete ADU addition (new construction) | $90,000-$220,000 | 4-8 months |
The spread on these numbers comes down to access: a ground-level post base in a Pompano Beach backyard is straightforward, while a second-story connector on a Las Olas property requires scaffolding and a traffic control plan. Every quote we write lists the Barrette part number or approved equivalent, the labor hours, and the permit cost separately. Under Clause 1 of the Haven Standard, that written price is fixed; if we discover rot in the post itself during disassembly, we document it with photos, write a change order with the exact additional cost, and no work proceeds until you sign. Our 365-Day Done Right Promise covers the installation; the Barrette OEM parts carry their own 20-year limited warranty against manufacturing defect.
DIY or Call Us?

What you can safely check: the visible bolt tightness on railing brackets, the drainage slope at post bases, and whether rail caps have shifted from their original position. Use a 4-foot level on the posts; anything past 1/4 inch out of plumb warrants closer inspection.
Where DIY goes wrong: structural connectors in a home addition or ADU are engineered components with specific torque values and load paths. Removing a single bolt from a tension connection to “see if it’s loose” can redistribute forces across the remaining fasteners in ways that aren’t visible until the assembly fails under load. In Fort Lauderdale, where wind uplift is the governing design factor, a compromised connection during a summer storm is not a maintenance issue; it’s a safety issue. We don’t recommend homeowner disassembly of any Barrette structural component that supports a roof, floor, or guardrail. If you’re unsure, call (754) 254-7676 and we’ll schedule a no-charge assessment with photo documentation.
FAQs
In our climate, standard galvanized Barrette hardware shows surface corrosion in 5-7 years and functional degradation in 10-12 if installed within a mile of the Intracoastal; stainless hardware extends that to 15-20 years. Call (754) 254-7676 for an exact quote on upgrading to marine-grade - estimates are free.
No. Once a structural connector shows corrosion pitting, cracking, or bolt elongation, the manufacturer’s engineering certification no longer applies; repair welding or plating voids the load rating. We replace with new, documented hardware. Call (754) 254-7676 for a line-item quote.
A single bracket or post base swap takes 2-4 hours; a full railing system replacement takes 1-2 days. Full addition or ADU construction runs 4-8 months depending on Fort Lauderdale permitting. Call (754) 254-7676 to schedule - we stock common Barrette hardware and can often start within 48 hours.
We carry the 20 most common Barrette post bases, brackets, and rail connectors on our Fort Lauderdale trucks, plus Simpson Strong-Tie equivalents for same-day substitution when the engineering spec allows. Specialty or oversized beam hardware orders in 2-3 business days. Call (754) 254-7676 to confirm availability for your model.
Ready to get the exact number in writing? Call Rowan Construction Group Fort Lauderdale at (754) 254-7676 to schedule your free estimate. We’ll bring the Barrette catalog, measure your existing assembly, and deliver a flat written price with every part listed by name before any work starts. That’s Clause 1 of the Haven Standard, and it’s been our practice since 2007.
Written by Grant Rowan, Owner, Rowan Construction Group - Fort Lauderdale, FL at Rowan Construction Group Fort Lauderdale, serving Fort Lauderdale and nearby areas.







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