Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Goulds
Home additions and ADU construction in Goulds typically run $45,000-$130,000 depending on scope, with detached ADUs landing between $90,000 and $220,000. The single biggest variable here is not square footage, it’s what we find when we open the walls on older CBS homes. If you’re planning an addition off SW 216th Street or converting a garage near the South Dade TransitWay, call Barrett & Sons Construction at (877) 610-1318 for a free estimate. We’ll walk the property, check the existing structure, and give you a written scope with real numbers before anything gets nailed down.
Tom Barrett owns the company and his crews work Goulds every week. We know the HVHZ rules, the water table, and the building department’s expectations because we deal with them on every job. That local knowledge is the difference between a permit that clears first review and one that sits in resubmission for three weeks.
Why Barrett & Sons Construction Is Goulds’s Preferred Home Additions & ADU Company
We’ve been owner-operated since 1998, and Tom still answers his own phone most days. When you call about a room addition in Goulds, you talk to someone who knows exactly what a Miami-Dade NOA is and why your window package has to carry one. That matters down here more than almost anywhere else in the country.
Our Home Additions & ADU team pulls permits on every eligible job and gets inspections signed before we close up walls. The permit inspector works for you, not for me, which is exactly why I like him on the job. If something’s not right, I want to know about it before drywall goes up, not after.
Every scope, every allowance, every price change arrives as a written change order before work happens. An allowance that isn’t on paper is a surprise waiting for a date. That’s how we’ve operated for 29 years, and it’s why customers in Goulds keep our number saved on their phones.
Our Home Additions & ADU Services in Goulds
ADU Design & Permitting
Every ADU in Goulds has to clear Miami-Dade’s HVHZ review, which means our design work starts with product approvals, not just floor plans. We spec windows, doors, and structural fasteners that already carry the Miami-Dade Notice of Acceptance, so your permit package doesn’t get kicked back for a missing NOA. From the first site visit to final inspection sign-off, we handle the drawings, the engineering, and the submittals in-house with our regular consultants, not a rotating cast of out-of-county subs.
Garage Conversion ADU
Converting an attached garage in Goulds triggers a change-of-use review, and that almost always means bringing the existing openings up to current impact-rated standards. Many older garages off 216th Street still have original aluminum windows with no NOA labels, which the building department will flag immediately. We budget for those upgrades in the initial scope, not as a surprise after demolition starts. A typical garage conversion in Goulds runs $30,000-$80,000 depending on whether we’re adding a bathroom, upgrading the electrical service, or reworking the roofline.
New Detached ADU
A ground-up detached ADU in Goulds requires engineered fill and drainage planning before the slab ever gets poured, because the rainy-season water table sits only 12-18 inches below grade in much of the southern Miami-Dade flatlands. Skip that step and you get heaving slabs and moisture wicking through the floor within a few years. Our site prep includes compaction testing and drainage design as standard line items, not optional add-ons. Full detached ADUs typically run $90,000-$220,000 here, with structural engineering costs running above state average because of the 175+ mph wind-load requirements.
Junior ADU & Interior Conversion
For homeowners who want rental income or a multigenerational setup without full ground-up construction, a junior ADU carved out of an existing bedroom or enclosed porch is often the most practical route in Goulds. These conversions keep the original footprint and usually avoid major foundation work, which matters when you’re building on porous Miami oolitic limestone. We still pull permits, still write change orders for everything, and still back the finished job with the 90-Day Done Right Promise.
What happens when you call
- 1
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 Goulds
We install names you can look up: Schluter for waterproofing and tile substrates, Grohe for plumbing fixtures, and GAF for any roofing component on a second-story addition or sunroom. When a Goulds job calls for belt-and-suspenders waterproofing on a slab-on-grade floor, we order Schluter systems and warranty-backed membranes, not whatever generic product happens to be on the shelf at the nearest supply house. We don’t stock mystery brands off a van, and we’ll tell you exactly what’s going in before we order it.
Common Home Additions & ADU Problems We See in Goulds Homes
- Missing Miami-Dade NOA on prior work. Pre-1993 additions and window replacements often carry a standard Florida Product Approval but no Miami-Dade NOA. The building department catches it at plan review, and suddenly a three-week permit becomes a six-week delay. We check every product spec against the NOA database before we submit.
- No continuous load path in older CBS construction. Homes built before Andrew in the 1950s through 1980s frequently lack the roof-to-wall strapping that current code requires. Open a wall for an addition and we often find rusted anchors, undersized straps, or none at all. That means a structural retrofit before the new load-bearing header goes in.
- Slab heaving from shallow footers on high water table. Goulds sits essentially at sea level on flat limestone, and June through October the groundwater can surface within 12-18 inches of grade. Standard footer depths that work in Broward don’t always hold here. We engineer for the site, not for the county next door.
- Unexpected termite damage in framing. Older CBS homes in Goulds have wood roof trusses and interior partition framing that termites have had decades to find. When we open a wall or pull ceiling drywall for a second-story addition, we sometimes find compromised members that need sistering or replacement before we can proceed. We document it, price it, and get your written approval before touching it.
Pricing for Home Additions & ADU in Goulds, FL
Here’s what you can expect to budget in Goulds’s market. These ranges reflect the HVHZ engineering, NOA-compliant openings, and site prep the local building department will require:
| Project Type | Typical Goulds Price Range |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
What moves the number most is what’s already inside your walls: outdated wiring, failed waterproofing, missing strapping, termite-compromised framing. A 1970s CBS home off SW 216th Street will almost always need opening retrofits and impact-rated windows once we pull the permit, because the inspector is going to require them. We build those line items into the initial scope and write allowances for the unknown, so the price on paper is the price you pay unless you approve a change in writing. Call (877) 610-1318 for an exact quote. Estimates are free.
We Also Serve Cities Near Goulds
Our crews run jobs in Goulds and the neighboring communities along the South Dade corridor, including Cutler Bay, Cutler Ridge, Lakes by the Bay, and East Perrine. Same owner, same written change orders, same 90-Day Done Right Promise wherever the job takes us.
Serving Goulds, FL - Our Local Coverage Area
We’re based in the Goulds 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 Goulds
Goulds sits inside Miami-Dade County’s High Velocity Hurricane Zone, a jurisdiction where every window, door, and structural fastening product must carry a Miami-Dade NOA, which is a separate approval layer beyond the standard Florida Product Approval. If your contractor specs a product without an NOA, the building department rejects the permit application and you lose weeks in resubmission while they source compliant materials. We check every spec against the NOA database before submitting anything, so your review goes through the first time. Call (877) 610-1318 and we’ll review your plans for free.
Expect to budget for a full roof-to-wall strapping retrofit and impact-rated opening upgrades. Homes built in the 1960s in Goulds predate Miami-Dade’s post-Andrew code, so they typically lack the continuous load path that current second-story additions require. We also find rusted wall ties, undersized anchor bolts, and sometimes termite damage in the trusses. We’ll inspect first, write allowances for what we find, and get your written approval before any structural work proceeds. Call (877) 610-1318 for a structural assessment.
During the June-to-October rainy season, groundwater in Goulds can rise to within 12-18 inches of grade because the community sits on flat, porous Miami oolitic limestone at essentially sea level. That means standard slab-on-grade prep won’t hold up without engineered fill, deeper footers, and a drainage plan that moves water away from the structure. On a recent 1970s CBS home near SW 216th Street, we pulled the existing scope and wrote new allowances for exactly that before the new load-bearing header went in. Call (877) 610-1318 and we’ll walk your lot and tell you what your site actually needs.
Yes. Converting a garage from vehicle storage to living space is a change of use under Miami-Dade code, and the building department will require the existing openings to meet current impact-rated standards with NOA-compliant products. Most garages on older Goulds homes still have original aluminum windows with no NOA labels, so plan on replacing them as part of the conversion scope, which starts at around $30,000. We build those upgrades into the quote up front. Call (877) 610-1318 for a free estimate.
We stop work, document what we found with photos, price the repair, and hand you a written change order before we touch anything else. You approve it in writing or we don’t proceed. That’s not a policy quirk; it’s how Tom has run the company since 1998, because an allowance that isn’t on paper is a surprise waiting for a date. On a Goulds room addition, that usually means sistering termite-compromised framing, replacing cloth-wrapped wiring, or adding missing strapping before drywall closes. Call (877) 610-1318 and we’ll walk you through exactly how the process works.
If you’re planning a home addition or ADU in Goulds, don’t guess at the number. Call Barrett & Sons Construction at (877) 610-1318 for a free estimate. We’ll inspect what’s already in your walls, write a scope with real figures, and handle the permits, the engineering, and every inspection along the way. Tom Barrett’s name and license number are published and verifiable, and the 90-Day Done Right Promise is written on every contract. Ask anyone on your street, or look up the license number yourself.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Goulds and the surrounding South Dade communities since 1998.