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 Hialeah Gardens
A home addition or ADU in Hialeah Gardens typically runs $45,000-$130,000 for a room addition and $90,000-$220,000 for a detached ADU, depending on foundation work, finishes, and how tight the lot access is. We’re Barrett & Sons Construction, and we have been building in Miami-Dade County since 1998. Tom Barrett and his sons run the crews that serve Hialeah Gardens, and every project starts with a written scope, a written allowance sheet, and a permit pulled before the first nail moves. Call (877) 610-1318 for a free estimate.
Hialeah Gardens is not like most of the cities we work in. The residential pockets are small, the lots are tight, and the industrial zoning means a neighbor sixty feet away might be a warehouse running a night shift. None of that stops a good addition. It just means the staging plan, the party-wall notice, and the permit package have to be thought through before demolition day. That is the work we do every week here.
Key Takeaways
- Home additions in Hialeah Gardens run $45,000-$130,000; ADUs run $90,000-$220,000; garage conversions run $30,000-$80,000.
- Every structural product used here needs a current Miami-Dade County Notice of Acceptance (NOA). We source only NOA-certified materials.
- High water table and shallow marl soils mean most additions here need grade beams, pilings, or an elevated slab and FEMA elevation review.
- Party-wall notices and work-hour ordinances are standard on tight Hialeah Gardens lots. We handle them before framing starts.
- Written change orders on every scope change. No surprise invoices at the end.
Why Barrett & Sons Construction Is Hialeah Gardens’s Preferred Home Additions & ADU Company
We are owner-operated, and the name on the truck is the name that answers the phone. That matters in Hialeah Gardens, where the difference between a good addition and a stop-work order often comes down to whether the contractor actually reads Miami-Dade’s permitting requirements. Tom Barrett publishes his name, his address, and his license number. Any homeowner in Hialeah Gardens can look all of it up before signing. We want you to.
The reviews from Hialeah Gardens customers mention the same things over and over: permits actually got pulled, inspectors signed off, and the price on the contract matched the final bill. The last contractor most of our customers used told them permits were optional. We are the response to that guy. A live person answers our phone 24 hours a day, 7 days a week. When you call about a room addition on West 68th Street or a garage conversion near the industrial corridor, you are not leaving a voicemail. You are talking to someone who knows the project.
Our Home Additions & ADU Services in Hialeah Gardens
We are the Home Additions & ADU team that handles the full permit, foundation, and framing sequence. Here is what we do most often in Hialeah Gardens:
ADU Design & Permitting
This is where out-of-county crews get shut down. Every structural product used in Miami-Dade construction has to carry a current Notice of Acceptance (NOA). That includes structural connectors, underlayment, and impact-rated windows. We submit permit packages with NOA documentation for every product, not just the obvious ones. The permit inspector works for you, not for me. I want his signature on your paperwork as much as you do.
Garage Conversion ADU
Garage conversions in Hialeah Gardens run $30,000-$80,000. On the older CBS homes built in the 1970s and 1980s, the bigger cost driver is usually what is inside the walls: hidden termite damage or non-NOA connectors that have to be replaced before any load-bearing modification. We write that contingency into the scope up front, not as a surprise invoice later. A garage conversion on a tight lot also means staging matters. Dumpster placement has to respect the 10-foot front setback, or the permit gets flagged before demolition even starts.
New Detached ADU
New detached ADUs in Hialeah Gardens generally run $90,000-$220,000. The reason the range is wide is the foundation. Sitting on the eastern edge of the Everglades transition zone, Hialeah Gardens has a critically high water table over Miami limestone. That usually means grade beams or an elevated slab, plus a FEMA flood-zone elevation certificate. We design around the soil first, then the building. Skimping on the foundation to save money is how you get a cracked slab and a rejected inspection.
Junior ADU & Interior Conversion
A junior ADU carved out of existing square footage is the most cost-effective way to add a rental unit or an in-law suite without changing the building footprint. These projects move faster because the foundation is already there. The complication is shared mechanical systems and egress windows. We handle the electrical separation, the separate entrance, and the sound isolation, and all of it gets a permit.
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 Hialeah Gardens
We install materials you can actually look up. On Hialeah Gardens additions and ADUs, that means impact-rated windows from PGT and CGI, both of which carry current Miami-Dade NOA listings for the wind-load standards that govern this county. Where the spec calls for it, we also use Simonton and Ply Gem. We do not stock mystery brands off a van. If the product does not have an NOA, it does not go on a Hialeah Gardens permit application.
Common Home Additions & ADU Problems We See in Hialeah Gardens Homes
- Staging permit rejections. On narrow side streets in the industrial-residential transition zone, a dumpster that encroaches on the required 10-foot front setback will get the permit flagged. We plan material laydown and dumpster placement before we file, not after.
- Hidden termite damage in pre-1970s CBS walls. If we open a shared wall for a second-story addition and find damaged framing or non-NOA structural connectors, it has to be replaced before any load-bearing modification. That is a written change order, not a surprise.
- Punch list delays during hurricane season. June through November is the window when exterior work stalls if the structure is not weather-tight before rough-in inspection. We sequence the roof and envelope first.
- Shared access easements and party walls. Many Hialeah Gardens lots sit close to warehouses or other CBS homes. A party-wall notice is not optional when adding a second story. We file it, we notify the neighbor, and we keep the work moving.
Pricing for Home Additions & ADU in Hialeah Gardens, FL
Here is what we are quoting right now for Home Additions & ADU in Hialeah Gardens:
| Project | Hialeah Gardens 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 in Hialeah Gardens is the foundation: grade beams, pilings, or an elevated slab all cost more than a simple slab on grade, and most lots here need one of the three because of the water table. Site access is the second factor. If the crew cannot get a concrete truck within thirty feet of the pour, the crane time gets added. Every line item goes on paper before we start. Call (877) 610-1318 for a free estimate and a written, line-item scope. You will also get our 90-Day Done Right Promise on the contract, in writing: if it is not done right, Tom Barrett comes back and makes it right, one call.
We Also Serve Cities Near Hialeah Gardens
Our crews work throughout Hialeah, Miami Lakes, Miami Springs, and Gladeview. If you are in one of those neighboring communities and planning a room addition or ADU, call (877) 610-1318. We will send someone out to walk the lot and give you a written estimate, same as we do for our Hialeah Gardens customers.
Serving Hialeah Gardens, FL - Our Local Coverage Area
We’re based in the Hialeah Gardens 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 Hialeah Gardens
Yes. Every structural product used on a Hialeah Gardens home addition or ADU must carry a current Miami-Dade County Notice of Acceptance, including underlayment and structural connectors, not just windows and roofing. We submit NOA documentation with the permit package up front. If a contractor files without it, the county flags it and the permit stalls. Using NOA-certified products from the start typically adds a few days to permit preparation, not weeks, because we already know which products comply. Call (877) 610-1318 and we will walk you through the list for your specific scope.
A party-wall notice is a formal written notification to the owner of the adjacent structure that work will impact the shared wall. In Hialeah Gardens, where many CBS homes sit close together and some lots are near warehouses, we file the notice before framing begins. The notice gives the neighbor the facts, protects both legal positions, and keeps the job from turning into a dispute. We handle the filing and the communication. Call (877) 610-1318 to discuss your specific lot and wall condition.
Most likely, yes. Hialeah Gardens sits on shallow marl and fill soils over Miami limestone with a critically high water table. That means most new ADU foundations here require grade beams, pilings, or an elevated slab, plus a FEMA flood-zone elevation certificate as part of the Miami-Dade permit. We design the foundation to the soil, and we price it honestly from the start. The cost is built into the $90,000-$220,000 range we quote, not added later. Call (877) 610-1318 for a site-specific assessment.
Yes, in most cases, but the bigger cost driver is almost always what is behind the walls: termite damage, non-NOA connectors, or outdated electrical that has to be brought to code before the space can be used as a dwelling. Garage conversions in Hialeah Gardens run $30,000-$80,000, and we write the contingency into the scope so you see it coming. Zoning and access on small industrial-zoned lots can complicate staging, but we handle the setback and laydown planning before the permit is filed. Call (877) 610-1318 and we will look up the zoning and lot dimensions with you.
Hialeah Gardens restricts construction noise to defined daytime hours, typically starting around 7:00 or 8:00 AM and ending in the early evening, and the rules are enforced more strictly in the industrial-residential transition zones. We schedule noisy work like concrete cutting and roof tear-off inside those hours, which keeps your neighbors and code enforcement off our backs. The ordinance does not slow the project if the work is planned correctly. What slows a draw schedule more in Hialeah Gardens is exterior work stalling during hurricane-season weather windows. We sequence the building envelope first specifically to avoid that. Call (877) 610-1318 for a scope and schedule that respects the local rules from day one.
Get an Honest, Written Quote for Your Hialeah Gardens Home Addition or ADU
If you live in Hialeah Gardens and you are serious about an addition, an ADU, or a garage conversion, call Barrett & Sons Construction at (877) 610-1318. We will come out, walk the lot, and put a written line-item estimate in your hand. Every scope, every allowance, every change order in writing. Permits pulled, inspections signed. And a 90-Day Done Right Promise on the contract, in writing, from a company that has been run by the same family since 1998. Tom Barrett answers his own phone. Ask anyone on your street, or look up the license number yourself. We will still be here when you call.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Hialeah Gardens and Miami-Dade County since 1998.