Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Home Additions & ADU Across Davie
Out here in Davie, a home addition is rarely just a box bolted onto a house. It’s often a mother-in-law suite carved out of a garage, a standalone ADU tucked behind a paddock, or a second story that has to hold up against century-old oak limbs and summer squalls. A full Home Additions & ADU project in Davie typically lands between $45,000 and $130,000, depending on whether you’re converting existing square footage or pouring new foundation. We’re Barrett & Sons Construction, and we’ve run crews through Davie long enough to know the difference between a job that looks good on paper and one that passes the Town’s agricultural overlay review on the first submittal. Call (877) 610-1318 and we’ll walk your lot with you before anyone picks up a hammer.
Why Barrett & Sons Construction Is Davie’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and the name on the truck still answers the phone. When a Davie homeowner calls about an addition off Hiatus Road or a garage conversion in the 33314 zip, they get a live person, not a call center in another state. Tom’s sons run the crews. That matters out here because Davie isn’t a cookie-cutter suburb. It’s one of the only incorporated municipalities in South Florida that legally preserves equestrian zoning and horse-trail easements throughout residential neighborhoods. A contractor who’s never worked under that overlay can burn six weeks getting a permit rejected for reasons that have nothing to do with structural engineering.
We pull permits on every eligible job, we put every allowance and change order in writing before work starts, and we back the finished project with a written 90-Day Done Right Promise. If something isn’t right, Tom comes back and makes it right, no runaround. That promise is on the contract, not buried in fine print. It’s the same standard we’d hold a contractor to if they were building on the lot next to ours.
Our Home Additions & ADU Services in Davie
Here’s what we do most often for homeowners across Davie, from the ranch blocks near Nova Southeastern to the larger agricultural lots west of University Drive.
ADU Design & Permitting
An ADU in Davie isn’t just a small house. If your property falls under the Town’s rural or agricultural zoning, the accessory dwelling has to clear residential building code and the equestrian overlay at the same time. That’s the dual-track process out-of-town contractors get blindsided by. We handle the design, the drawings, the submittals, and the revisions. You’ll know what the Town wants before the first inspection, not after a stop-work order. A new detached ADU in Davie runs $90,000 to $220,000 depending on square footage, foundation type, and utility trenching.

Garage Conversion ADU
Plenty of Davie homes from the 1960s and 1970s have two-car garages that haven’t seen a car in a decade. Converting that footprint is usually the fastest path to rentable or family-housing square footage. In Davie, a garage conversion ADU typically runs $30,000 to $80,000. The cost swings on whether the slab needs leveling, whether the existing electrical panel has spare capacity, and whether the Town requires a separate water and sewer lateral. We’ll open the walls and tell you straight what’s salvageable before we quote anything.

New Detached ADU
A freestanding ADU in a Davie backyard means new foundation work, and foundation work here means dealing with a water table that sits close to the surface. Broward County’s stormwater management grid is not optional. We plan slab pours around saturation windows after summer thunderstorms, and we tie drainage into the county system the way the plans demand, not the way that’s cheapest. A detached unit in Davie runs $90,000 to $220,000, and we’ll give you a line-item price before we break ground.

Junior ADU & Interior Conversion
A junior ADU usually means converting an existing bedroom, den, or attached flex space into a self-contained unit with its own entrance, kitchenette, and bath. This is the lowest-cost way to add a rental unit or an in-law space without touching the footprint of a Davie CBS block home. Interior conversions often fall in the $45,000 to $130,000 range once you account for plumbing runs, electrical separation, and the required egress changes. We do these jobs in occupied homes regularly, and we keep the work zones sealed and the driveway clear.

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 Davie
For window and door rough-ins on additions in Davie, we install Simonton and PGT units that meet Broward County’s high-velocity hurricane zone requirements. These aren’t builder-grade parts from a supply house rack. They’re name-brand, impact-rated products you can look up before you sign anything. We also work with Ply Gem on sunroom and enclosed patio projects. If a brand matters to you, tell us. If you don’t care about brands, we’ll still install materials we’d put in our own homes. The 90-Day Done Right Promise covers the whole job, materials included, and if you’re a senior or veteran, there’s a standing 10% discount on the entire scope.
Common Home Additions & ADU Problems We See in Davie Homes
- Roofs that predate Hurricane Andrew’s 1992 code overhaul. Most Davie homes are 1960s to 1980s concrete block and stucco ranches. When you’re adding a second story, the existing roof-to-wall connections often need wind-mitigation retrofitting before the new framing goes up. Ignoring that gets a red tag on the first inspection.
- Garage slabs poured without proper grade. Davie’s flat, low-lying terrain means water finds the slab if the original grading has settled. We see garages where the concrete has spalled and the door frame rotted from the bottom up. A conversion starts with fixing the base, not covering it.
- Electrical panels already at capacity. Homes built before central air conditioning and pool pumps became standard often have 100-amp panels that can’t support a junior ADU. We’ll tell you before the drywall goes up, not when the inspector fails the rough-in.
- Stormwater drainage that was patched, not planned. Additions that extend the roofline can send runoff into a neighbor’s horse pasture or your own septic drain field. Davie’s stormwater grid is a legal obligation, not a suggestion. We tie in properly and put it in writing.
Pricing for Home Additions & ADU in Davie, FL
Here are the numbers we quote against in Davie, and we’ll put them in your written estimate so there’s no phone-number-versus-door-price surprise.
- Home Addition (attached room or suite): $45,000 - $130,000
- ADU Construction (detached, new build): $90,000 - $220,000
- Garage Conversion ADU: $30,000 - $80,000
- Junior ADU / Interior Conversion: $45,000 - $130,000
What moves the number in Davie specifically: whether the lot is in standard residential or agricultural overlay zoning, whether the water table forces a different foundation design, and whether the existing CBS block structure needs wind-mitigation work before framing. We’ll show you the allowances in writing, and any change order gets signed by you before work proceeds. Call (877) 610-1318 for a free estimate. If you already have a written estimate from another contractor, bring it, and we’ll give you a free second opinion on it.
We Also Serve Cities Near Davie
Our Davie crews work the same neighborhoods every week, so if you’re in Broadview Park, Cooper City, Pine Island Ridge, or Melrose Park, we can get to you without a long drive and without scheduling delays. We also handle Kitchen Remodeling in Davie and Bathroom Remodeling in Davie when an addition scope rolls into an interior renovation. One contractor, one written change-order process, one name answering the phone.
Serving Davie, FL - Our Local Coverage Area
We’re based in the Davie 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 Davie
An attached home addition in Davie runs $45,000 to $130,000, and a detached ADU runs $90,000 to $220,000. Garage conversions land between $30,000 and $80,000. Your exact number depends on foundation type, agricultural overlay requirements, and utility tie-in distance. Call (877) 610-1318 and we’ll give you a written line-item estimate, free.
Yes. We pull permits on every eligible job, including the Town of Davie’s agricultural overlay review when your lot falls under equestrian zoning. The permit inspector works for you, not for us, and we like it that way. We’ll walk you through every inspection, including the final.
Most Davie ADU projects run three to six months from permit submittal to final inspection. Foundation work can stretch longer during peak summer storm season when saturated soil delays slab pours. We’ll give you a written schedule with your estimate, and we’ll update it if anything moves.
Only if you change the scope, and even then, every change comes to you as a written change order before any work happens. No surprise invoices at the end. An allowance that isn’t on paper is a surprise waiting for a date. We don’t do that.
Yes. Every completed job is backed by our 90-Day Done Right Promise, written on the contract. If something isn’t done right, call Tom, and he comes back to make it right. We also honor a permanent 10% senior and veteran discount on every project in Davie.
Call (877) 610-1318 to schedule your free estimate for a home addition or ADU in Davie. We’ll walk the lot, talk through the zoning, and put the numbers in writing before you commit to anything.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Davie, FL.







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