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 Palmetto Bay
Adding square footage to a Palmetto Bay home means clearing two village-specific hurdles before the first footing gets poured: the tree preservation ordinance and the Miami rock that sits just inches below your lawn. Most out-of-area contractors learn that the hard way, on your dime and your timeline. A home addition in Palmetto Bay typically runs $45,000-$130,000, with detached ADUs landing between $90,000 and $220,000 depending on size and site work. Tom Barrett has built additions and ADUs across 33158 since 1998, and our crews know exactly what the village asks for before a permit gets pulled. Call (877) 610-1318 for a free estimate and a scope of work that accounts for tree protection and rock excavation as line items, not surprises.
Why Barrett & Sons Construction Is Palmetto Bay’s Preferred Home Additions & ADU Company
When homeowners off Old Cutler Road or down by Coral Reef Park ask who we are, the answer is simple: Tom Barrett, his sons, and the same crew members who answer the phone when you call. We’re not a franchise dispatching strangers to your door in Palmetto Bay. We’ve built additions and ADUs throughout Miami-Dade for over 29 years, and in Palmetto Bay specifically we’ve learned to read the two things that make or break every project: the tree survey the village insists on and the oolitic limestone that laughs at standard excavation bids.
Every price we quote comes with written change orders before any scope change touches the job. Every eligible project includes permits pulled and inspections signed. Tom publishes his name, his address, and his license number. Look it up before you sign anything. That’s the whole point.
Palmetto Bay homeowners tell us the same story again and again: a national company quoted low, hit Miami rock at seven inches, and handed over a change order that doubled the excavation line. That doesn’t happen with us, because rock removal and tree protection are already in the first written quote. The 90-Day Done Right Promise is written on every contract, not buried in fine print. If something’s not right, one call brings Tom back.
Our Home Additions & ADU Services in Palmetto Bay
We build the full spectrum of Home Additions & ADU work in Palmetto Bay, from attached room additions on 1960s CBS ranches to fully detached ADUs that pass the village’s tree protection review on the first submittal. Here’s what that looks like on the ground in 33158.
ADU Design & Permitting
Most Palmetto Bay ADU delays happen before construction starts. The village requires a tree survey, protective barrier plan, and often a replacement plan for any tree near the footprint. We handle drawings, arborist coordination, HVHZ product approvals, and the permit package as one continuous service, so your submittal isn’t kicked back for missing a single sheet.
New Detached ADU
A detached ADU in Palmetto Bay has to meet Miami-Dade high-velocity hurricane zone wind-load standards on every exterior component, from the roof sheathing to the impact doors. Our quotes include Miami-Dade Product Approved windows and doors, engineered tie-downs, and rock excavation in the site work line. No allowances that vanish once you sign.
Garage Conversion ADU
Converting an existing garage is often the smartest way to add a rental unit or guest suite without triggering as much new impervious coverage, but Palmetto Bay’s water table sits only 3-6 feet below grade in much of the ZIP. That means any plumbing or drainage modification needs active dewatering even in a dry February. We budget for it, because we’ve seen what happens when a contractor doesn’t.
Junior ADU & Interior Conversion
Interior conversions inside the existing footprint can sometimes move faster on the permitting side, but the village still wants to see the impact-glazing product approvals and the tree survey if exterior windows change. We install Simonton impact units regularly in Palmetto Bay and carry the paper trail to prove the rating.
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 Palmetto Bay
We don’t put mystery brands off a van onto your Palmetto Bay home. On additions and ADUs throughout the village, we install Simonton impact windows, PGT High Velocity windows and doors, Ply Gem impact-rated sliders, and CGI products where the spec calls for it. Each one carries a Miami-Dade Product Approval number that the inspector will ask for, and we keep that documentation in your project file. If a window or door ever needs service, we already know the product line, and we’re twenty minutes away, not two states away.
Common Home Additions & ADU Problems We See in Palmetto Bay Homes
- Rock excavation missing from the bid: Palmetto Bay looks like soil on top, but Miami oolitic limestone often sits at 6-8 inches down. A cheap quote assumes diggable earth, then the jackhammer shows up on day one of footing work and the draw schedule blows apart.
- No tree survey before the permit: The village tree protection officer can issue a stop-work order before footings are poured if barriers and the survey aren’t in place. That stalls the project, not the contractor’s invoice.
- Non-approved windows on a second-story addition: Specifying a window that isn’t Miami-Dade Product Approved fails the HVHZ inspection and leaves a change order for compliant PGT or Simonton units mid-project. We’ve corrected several of those for Palmetto Bay homeowners who hired cheap first.
- Below-slab drainage that ignores the water table: With groundwater at 3-6 feet in much of 33158, any ADU drainage or footing work needs dewatering. Skip it, and the wet season finds the problem for you.
Pricing for Home Additions & ADU in Palmetto Bay, FL
Here are the real numbers we’re quoting right now for work in Palmetto Bay.
| Project | Typical Range in Palmetto Bay |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion ADU | $30,000 - $80,000 |
| Impact Window Installation | $8,000 - $25,000 |
What moves the number in Palmetto Bay more than anything else is rock depth and tree proximity. A detached ADU on a lot where Miami rock sits at 6 inches and three live oaks hug the setback will cost more in site work than the same footprint on a clear, shallow-sloped lot. That’s not a contractor padding a line. That’s the actual excavation and tree protection work the village requires. We put both in writing, not as allowances with an asterisk. Call (877) 610-1318 for a free written estimate with line-item pricing for your specific lot.
We Also Serve Cities Near Palmetto Bay
Our crews work throughout the southern Miami-Dade corridor, including Cutler, East Perrine, Palmetto Estates, and West Perrine. Whether you’re two blocks from Biscayne Bay or on the western edge of the village, call the Palmetto Bay team at (877) 610-1318. Scheduling runs through our South FL office in Miami, and the crew on your street is the same crew that walks the permit through the village.
Serving Palmetto Bay, FL - Our Local Coverage Area
We’re based in the Palmetto Bay 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 Palmetto Bay
Almost every addition or new detached ADU in Palmetto Bay triggers a tree survey, because the village’s tree preservation ordinance requires identifying protected trees, installing protective barriers, and often filing a replacement plan before a construction permit gets issued. Exceptions are rare and usually limited to interior work that doesn’t change the footprint or disturb root zones, but the moment you add a slab, footing, or exterior window, assume the survey is coming. We handle the arborist coordination and barrier installation as part of the permit package. Call (877) 610-1318 and we’ll tell you exactly what your lot needs before you spend a dollar on design.
Every exterior window and door on a Palmetto Bay ADU must meet Miami-Dade high-velocity hurricane zone (HVHZ) standards and carry a Miami-Dade Product Approval, which usually means impact-rated systems from PGT, Simonton, Ply Gem, or CGI depending on your opening sizes and budget. The exact design pressure rating depends on location, roof height, and exposure, but anything non-approved fails inspection. That’s a change order waiting to happen if your first quote didn’t specify product approvals. Our quotes always name the product line and rating. Get a free written estimate at (877) 610-1318.
In much of Palmetto Bay’s 33158 ZIP, Miami oolitic limestone sits only 6-8 inches below grade, which means any footing or utility trench for a detached ADU requires jackhammer excavation rather than standard digging. That’s two or more days of hard rock removal, and it has to be a line item in the quote or the budget blows before the first inspection. On a mid-1980s CBS ranch off Old Cutler Road, our crew jackhammered for two full days to reach proper footing depth for a new ADU, while tree barriers held the live oaks back and the permit package showed the village arborist exactly where the slab would stay clear of critical root zones. We pulled the footing sign-off the same week because rock and tree work were in the scope from day one. Call (877) 610-1318 if you want a quote that accounts for the ground you’re actually standing on.
A properly permitted, inspected ADU built to current Miami-Dade HVHZ standards can help on insurance, because documented compliance shows your carrier that the addition meets the wind-load codes that older pre-Andrew Palmetto Bay homes may not. You may see a lower wind-loss premium or at least avoid a nonrenewal headache down the line. What helps most is the paper trail: permit number, inspections signed, and product approvals on file. We hand all of that over at closeout. Call (877) 610-1318 for a free estimate, and ask your agent what documentation they want. We’ll make sure you have it.
A compliant Palmetto Bay ADU quote includes rock excavation at $X per cubic yard based on your lot’s actual depth, tree survey and barrier installation, Miami-Dade Product Approved windows and doors by named brand, dewatering for any below-slab work, permit fees, and the HVHZ inspection package. A cheap quote leaves out the rock, skips the tree survey, specs non-approved windows, and quietly plans to surprise you with change orders after demolition starts. That’s the difference between a written scope from Tom Barrett and a phone quote from someone who’s never seen your lot. Call (877) 610-1318 and we’ll put the whole thing in writing before you sign.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Palmetto Bay since 1998.