Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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After
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AfterFast, Reliable Home Additions & ADU Across Homestead
Adding square footage in Homestead means building to a different standard than anywhere else in Florida. A home addition or ADU here must meet Miami-Dade County’s High-Velocity Hurricane Zone (HVHZ) Product Approval requirements, the strictest wind-resistance code in the continental U.S. Most homeowners don’t learn that until a permit gets kicked back or a window package fails inspection. We plan for it from day one. Call (877) 610-1318 and we’ll walk your property, review what your block, your CBS walls, and your drainage actually require, and hand you a written scope with real numbers.
Tom Barrett founded this company in 1998. His sons run the crews. When we quote an addition in the 33030, 33031, 33032, or 33033 ZIP codes, the person who priced it is the person you’ll see swinging the hammer. We live close enough to Homestead that a question gets answered by a live person, not a call center in another state.
Why Barrett & Sons Construction Is Homestead’s Preferred Home Additions & ADU Company
Homestead homeowners have a healthy suspicion of contractors, and for good reason. The post-Andrew rebuilding wave brought a lot of out-of-town crews through here in the mid-90s, and some of them cut corners that homeowners are still paying for. We’re the opposite. Tom Barrett publishes his name, his address, and his license number. Look it up before you sign. He wants you to.
Our Home Additions & ADU team has pulled permits and passed inspections on additions, garage conversions, and detached ADUs across Homestead’s CBS neighborhoods. We know which window packages carry the right Miami-Dade NOA, which foundation details work on Miami Limestone bedrock, and which inspectors want what documentation. That knowledge shows up in the quote, not as a surprise change order later.
Every Homestead job comes with the 90-Day Done Right Promise written on the contract. If something isn’t right, Tom comes back and makes it right. One call. That’s the whole warranty. Twenty-nine years in business and that promise still hasn’t changed.
Our Home Additions & ADU Services in Homestead
ADU Design & Permitting
This is where Homestead projects live or die. An ADU here isn’t just a set of plans, it’s a stack of Miami-Dade HVHZ product approvals, wind-load calculations, and inspection-ready documentation. We handle the design and the permit package together, because a plan that looks great but specifies a window without the right NOA is a plan that gets rejected at rough-in. Our team knows exactly what the county will ask for before the county asks.
New Detached ADU
A detached ADU in Homestead sits on Miami Limestone bedrock that’s often just inches below the soil. That limits deep foundation options and makes uplift resistance the real engineering question, not just square footage. We build CBS ADUs with tie-down details that hold through a named storm, and we spec impact-rated windows and doors that carry a Miami-Dade NOA under HVHZ criteria, not a statewide Florida NOA that Broward or Monroe might accept but Homestead’s inspectors won’t.
Garage Conversion ADU
Converting a garage in Homestead usually means bringing an older, under-built structure up to current HVHZ code. That often includes new impact-rated garage doors, upgraded wall-to-roof connections, and insulation that actually handles our humidity. We price the conversion so the finished unit is legal, insurance-friendly, and comfortable year-round, not just a garage with drywall thrown up.
Junior ADU & Interior Conversion
A junior ADU carved out of an existing floor plan makes sense for Homestead families who want rental income or a place for aging parents without the cost of new footings. These projects still trigger Miami-Dade code review, especially around egress, fire separation, and electrical service. We pull the permits, schedule the inspections, and get sign-off before you write the final check.
Room Additions & Second Story Additions
Most Homestead homes are single-story CBS built between 1993 and 2005. Adding up means verifying the existing walls and footings can carry the load, and that usually means stucco remediation and rebar inspection first. We’ve done enough of these to know what a post-Andrew CBS wall looks like when it’s been wicking groundwater for twenty-five years. We’ll tell you the truth about what’s behind the stucco before we quote the second floor.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Homestead
When we install windows and doors on a Homestead addition or ADU, we use products that already carry the Miami-Dade HVHZ NOA. That means brands like PGT, CGI, and Simonton, the names Homestead builders have trusted since the Andrew rebuild. We don’t show up with a mystery brand off a van. We stock standard sizes locally for faster turnaround, and if your project needs a custom impact window, we order it through our normal suppliers, not a middleman. You’ll know the brand, the model, and the NOA number before we cut a single opening.
Common Home Additions & ADU Problems We See in Homestead Homes
- Wrong NOA, rejected at inspection. A contractor from up the county specifies a window or door with a standard Florida statewide NOA. Homestead’s inspectors reject it because Miami-Dade requires NOAs issued under HVHZ criteria. That means re-orders, permit delays, and a hole in the wall for weeks. We spec it right the first time.
- Foundation uplift on Miami Limestone. Bedrock inches below grade sounds sturdy, but it actually limits how deep you can anchor and makes uplift resistance critical. A cheap addition that skips load-bearing tie-downs can shift during a storm. Our foundation details assume the worst wind, because Homestead has already seen the worst wind.
- Groundwater and rebar corrosion in CBS additions. New CBS walls butted against old CBS walls create a seam where groundwater moves. Without proper waterproofing and drainage, the rebar corrodes and the stucco spalls within a few years. We treat every addition seam like what it is: a water management problem, not just a drywall seam.
- No HVHZ documentation at permit close-out. The county signs off, but nobody files the wind-load documentation with the permit record. Then a storm hits, and the insurance adjuster asks for proof your addition was built to code. If it’s not in the file, it didn’t happen. We document everything at close-out and hand you the paper trail.
Pricing for Home Additions & ADU in Homestead, FL
Here’s what real Homestead projects cost. These are not phone estimates we’ll “firm up” later. A home addition typically runs $45,000 to $130,000 depending on whether it’s a bump-out or a full second story. A detached ADU costs $90,000 to $220,000, with the range driven by foundation complexity, impact-rated window and door packages, and utility tie-ins. Converting an existing garage runs $30,000 to $80,000 depending on how much structural upgrade the original build needs.
| Project | Typical Homestead Price Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
What moves the number? HVHZ-rated impact windows and doors are the biggest single line item. Foundation work on Miami Limestone comes second. If your quote doesn’t itemize those two, it’s not a Homestead quote, it’s a generic Florida quote wearing a Homestead hat. Call (877) 610-1318 and we’ll give you a written line-item estimate for your specific block, your specific walls, your specific drainage. Estimates are free.
We Also Serve Cities Near Homestead
Our crews work throughout the southern tip of Miami-Dade, including Leisure City, Florida City, Naranja, and Princeton. If you’re just outside Homestead proper, we’re still local. For homeowners looking for Home Additions & ADU in Homestead or any surrounding area, the same owner-operated crew shows up, the same written change orders apply, and the same 90-Day Done Right Promise backs the work.
Serving Homestead, FL - Our Local Coverage Area
We’re based in the Homestead area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in Homestead
Every window, exterior door, skylight, and roofing assembly on your ADU must carry a Miami-Dade County Notice of Acceptance (NOA) issued specifically under HVHZ criteria. You need the NOA number on the product schedule in your permit package, and the inspector may ask for the physical sticker or documentation at rough-in. A standard Florida statewide NOA does not satisfy Homestead’s inspectors. Call (877) 610-1318 and we’ll review whatever your designer has spec’d before it goes to the county.
Most Homestead homes built between 1993 and 2005 are single-story CBS designed to carry their own roof, not a second floor. Before we can add up, we have to verify the existing wall thickness, rebar condition, and footing capacity, and that usually means opening up stucco and inspecting for corrosion. Some homes can carry the load. Some can’t without significant structural work. We tell you which one you have before we quote, not after demolition starts.
Yes. If you’re converting a garage with a vehicle door, that opening either gets fully infilled with CBS and stucco, or it gets a new impact-rated garage door and track assembly that carries a Miami-Dade HVHZ NOA. An old non-rated door left in place fails inspection and leaves the entire wall assembly non-compliant. We price the correct door into the conversion up front. Call (877) 610-1318 for an exact number for your garage.
A compliant quote from us includes the Miami-Dade NOA-rated impact windows and doors with their NOA numbers listed, foundation details engineered for Miami Limestone uplift, the tie-down specification for CBS walls, the permit and inspection fee schedule, and the HVHZ documentation package at close-out. A low-bid quote usually deletes the NOA-rated package first, because that’s the biggest cost difference. Then the homeowner pays for it later as a change order, a re-order, or a failed inspection. Our price is our price, on paper, before work starts.
If the compliance documentation is in the permit file, your insurance company can verify the addition was built to Miami-Dade’s wind standards, which supports premium discounts and smooths a post-storm claim. If it’s not documented, the insurer has to assume it wasn’t compliant, and you’ll argue with an adjuster while your roof is tarped. We file the wind-load documentation at close-out and hand you a copy. That’s part of the 90-Day Done Right Promise, written on the contract.
On a detached ADU in the 33030 corridor, our crew had to re-order a full window package because the original spec used a Broward-county NOA that was rejected at rough-in inspection. We replaced it with Miami-Dade NOA impact windows, added a load-bearing tie-down detail for the CBS walls, and got inspection sign-off without further delays. That’s the difference between planning for Homestead and discovering Homestead mid-project.
Homestead’s building stock is aging into its first major renovation cycle. The post-Andrew homes are twenty-five to thirty years old now, and the additions and ADUs built on them need to meet the same HVHZ standard Andrew demanded in 1992, plus everything Miami-Dade has tightened since. We’ve spent twenty-nine years learning what that means on the ground. Tom Barrett still answers his own phone most days. Call (877) 610-1318 for a free estimate on your Homestead addition or ADU, and get a written scope with real numbers, real NOAs, and a promise in writing.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Homestead and southern Miami-Dade County.