Barrette Home Additions & ADU Nationwide

Barrette Home Additions & ADU: The Miami Owner’s Guide

Barrette home additions and ADU construction in Miami typically runs $53,100 to $153,400 installed, depending on square footage, foundation work, and whether you’re adding a bedroom suite or a full accessory dwelling unit with a kitchen and bath. We stock the structural hardware and finishing materials for Barrette-style additions and ADUs, and our crew can assess your existing structure the same week you call. Most Miami homeowners discover they need this work when the quote from another contractor comes back vague, or when a handyman’s “finished” addition starts showing drywall cracks at the seams within a year.

Call (850) 801-8046

If you’re researching this page, you probably already know the pain: the numbers you’ve heard are all over the place, and nobody will put a price in writing before you commit. We will. Here’s everything the Miami market needs to know about Barrette-style home additions and ADUs, what they cost, what fails, and how we handle the work without surprise invoices.

Key Takeaways

• Installed cost in Miami: $53,100 to $153,400 for a home addition; $106,200 to $259,600 for a full ADU.
• Biggest compatibility gotcha: Miami-Dade County’s High Velocity Hurricane Zone (HVHZ) code requires impact-rated connections and wind-load strapping that standard Barrette-style framing packages don’t include.
• We are not affiliated with Barrette – Sawyer Remodel Miami is an independent contractor that installs and services additions and ADUs using Barrette-compatible materials alongside our named-brand partners like KraftMaid, Cambria, and Silestone.
• Written price before work starts – always included, not an upgrade.
• 365-Day Done Right Promise – if it’s not done right, we make it right, in writing.

Which Barrette Models This Applies To

Barrette doesn’t make a single “home addition kit” – the name shows up across siding, railing, and structural accessory lines that homeowners and contractors use in additions and ADUs. What we see in Miami homes are Barrette vinyl and aluminum railing systems, Barrette siding profiles, and the occasional Barrette outdoor structure that’s been repurposed as a covered patio or carport. The compatibility question that matters most: if you have an older Florida room or enclosed porch built with Barrette aluminum framing, the channel profiles changed around 2012. Pre-2012 extrusions used a 1¾-inch receiver channel; current Barrette lines use a 2-inch profile. That quarter inch sounds small until you’re trying to marry new panels to old framing and the reveal doesn’t line up.

For additions and ADUs, we generally recommend OEM Barrette components where the product is still in production (railing, siding trim), and high-quality aftermarket structural materials where it makes sense – LVL beams, hurricane-rated connectors, and impact glazing from named manufacturers. The honest answer: on a $100,000 addition, the Barrette-branded component cost is usually under $3,000. The structure, electrical, plumbing, and finishes are where your money goes. We’ll show you that breakdown in writing before you approve anything.

Signs Your Barrette Home Addition or ADU Is Failing

• Drywall cracks running diagonally from window and door corners. In Miami’s clay-heavy soil, differential settling is the usual culprit. The slab or footer shifts, the framing flexes, and the drywall tells the story. This is a structural red flag, not just a cosmetic one.
• Sticking doors or windows that used to open fine. When a door slab starts binding against the jamb in a Barrette-style framed addition, the header or jack studs are moving. Ignore it and you’ll be replacing millwork – and possibly addressing rot – within two seasons.
• Gaps opening between the addition and the original house. Miami humidity cycles cause the original structure and the addition to expand and contract at different rates. A gap at the transition point is the most common failure we see on additions three to seven years old.
• Musty smell in the addition’s drywall or baseboards. This is moisture intrusion. In Miami’s subtropical climate, a missing or failed moisture barrier behind siding or at the slab edge allows humidity to wick into framing and drywall. Mold follows within months.
• Sag in the roofline or creaking when the wind gusts over 20 mph. HVHZ exterior loads are no joke. If the addition’s roof feels bouncy during a summer squall, the structural connectors are under-specified or missing outright. This one needs a pro out fast.

Replacement Cost & What’s Included

For a home addition in Miami, plan on $53,100 to $153,400 installed. That range covers a 300-square-foot bedroom suite on the low end, up to a 700-square-foot great room with a full bath and wet bar on the high end. ADU construction runs $106,200 to $259,600 because it typically includes a kitchen, bathroom, separate utility service, and its own foundation system. The table below breaks down the line items we quote on every Miami addition or ADU job.

Every line item is laid out before work begins, so the number you approve is the number you pay. No change orders unless you ask for something new. We pull permits, pass inspections, and stand behind the whole build with our 365-Day Done Right Promise. Luca Romano’s crew has been running additions in Miami long enough to know that HVHZ inspections here are stricter than anywhere else in the state – and we build to spec the first time, so there’s no back-and-forth with the inspector.

FAQs