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AfterHow Much Does ADU Construction Cost in Fort Lauderdale?
ADU construction in Fort Lauderdale typically runs $90,000 to $220,000 as of 2026, with most homeowners landing between $130,000 and $180,000 for a finished one-bedroom unit. That range covers everything from a compact 400-square-foot studio built with mid-grade finishes to a larger two-bedroom detached unit with premium materials. The single biggest driver is whether you’re converting existing space (like a garage) or building new from the slab up.
Penhallow Remodeling Fort Lauderdale puts the price in writing before any work starts, so the number you approve on day one is the number on your final invoice. Trevor Nash and our team handle ADU construction as a full general-contractor project, which means one written price covering design coordination, permitting, foundation, framing, plumbing, electrical, HVAC, drywall, finishes, and the final inspection. Call (754) 551-2922 for a free estimate with real numbers, not a verbal ballpark.
ADU Construction Cost Breakdown (2026)
Here’s what your ADU budget actually pays for in the Fort Lauderdale market. These line-item ranges reflect what we see across Broward County in 2026, from Rio Vista to Victoria Park to Coral Ridge.
| Cost Component | Typical Range (Fort Lauderdale) |
|---|---|
| Design & architectural plans | $6,000 – $15,000 |
| Permits & impact fees | $8,000 – $25,000 |
| Site prep & foundation | $12,000 – $30,000 |
| Framing & structural | $18,000 – $40,000 |
| Plumbing (rough-in & fixtures) | $10,000 – $22,000 |
| Electrical (panel, wiring, fixtures) | $9,000 – $20,000 |
| HVAC (mini-split or tie-in) | $5,000 – $12,000 |
| Drywall, insulation & paint | $8,000 – $16,000 |
| Kitchenette & bath finishes | $15,000 – $35,000 |
| Flooring, doors & trim | $6,000 – $14,000 |
| Site work, walkways & landscaping | $3,000 – $10,000 |
| TOTAL (typical 500 – 800 sq ft ADU) | $90,000 – $220,000 |
Three things move the needle more than anything else in Fort Lauderdale. First, whether you’re building a detached unit or converting a garage. A garage conversion in a home like those in Sailboat Bend or Progresso Village can save $30,000 to $50,000 because the foundation, framing, and roof already exist. Second, site access: a tight lot where crews can’t get equipment to the back means more hand-carrying and higher labor costs. Third, your finish package. We install KraftMaid and Wellborn cabinetry, Cambria and Silestone quartz, and Kohler and Moen fixtures, and the tier you choose shifts the total by $10,000 or more.
For a deeper look at how an ADU gets built from permit to final inspection, see our ADU Construction in Fort Lauderdale page, which walks through the full process step by step.
What Affects ADU Construction Pricing in Fort Lauderdale
- Detached new build vs. garage conversion. A detached ADU on a concrete slab in neighborhoods like Shady Banks or Croissant Park runs $90,000 to $220,000. A garage conversion in the same footprint typically lands $30,000 to $80,000 because walls, roof, and slab are already there.
- Flood zone and elevation requirements. Much of Fort Lauderdale sits in FEMA flood zones AE or X. If your ADU must be elevated or include flood vents, a breakaway wall, or a raised mechanical platform, engineering and materials add $8,000 to $20,000. Homes east of Federal Highway hear about this more than homes near Plantation.
- Existing electrical service capacity. If your main panel can’t handle an additional living unit, you’re looking at a new 200-amp panel or a subpanel, which runs $3,000 to $7,000. Older homes in neighborhoods like Middle River Terrace often need this upgrade.
- Impact-rated windows and doors. Broward County code requires impact protection on all openings. Impact windows for an ADU add $5,000 to $15,000 depending on size and count. We install impact-rated products that meet Miami-Dade and Broward standards, so the line item isn’t optional, it’s code.
- Lot size and setback buffer. Fort Lauderdale zoning requires setbacks from property lines and the main house. Irregular lots or zero-lot-line configurations in neighborhoods like Las Olas Isles can force a smaller footprint or a custom design, pushing architectural and structural costs up.
- Finish level and material brands. A kitchenette with builder-grade cabinets and laminate counters lands at the low end. Cambria quartz counters, Kohler fixtures, and Wellborn cabinetry can shift that line item from $8,000 to $20,000 or more. The materials themselves carry their own manufacturer warranties, which sit alongside our 365-Day Done Right Promise.
How to Save on ADU Construction in Fort Lauderdale
You don’t need to cut corners to keep the number down. You need to make decisions before the first slab is poured, because change orders mid-project are what blow budgets in our market. Here’s what actually works.
- Convert the garage instead of building new. If your garage is at least 300 square feet and structurally sound, a garage conversion can trim $30,000 to $50,000 off the total compared to a ground-up build. The home improvement economics are straightforward: the shell already exists.
- Pick a standard floor plan over a custom design. Custom architectural drawings run $8,000 to $20,000. A slightly adapted stock plan can bring design costs down to $6,000 to $10,000 while still giving you a functional layout.
- Build 600 square feet instead of 800. Every additional 100 square feet of conditioned space adds roughly $18,000 to $28,000 in Fort Lauderdale. A well-designed 600-square-foot one-bedroom rents nearly as well as a larger unit and costs meaningfully less to build and cool.
- Choose mid-tier finishes, not builder-grade. This is the one place “cheapest” hurts you. Budget materials fail faster in South Florida humidity and heat. Mid-tier products, like well-made shaker cabinets and a solid quartz counter, hold up for the long term without the premium markup.
- Get a written price before you commit. This is the Penhallow difference. Trevor Nash and our team give you a written number before work starts, not a range that magically expands at the walkthrough. The price on day one is the price on the invoice, and our 365-Day Done Right Promise means if something isn’t done right, we come back and fix it at no charge. Call (754) 551-2922 for a free estimate.
Why ADU Costs Vary So Much From Contractor to Contractor
Two contractors can quote the same Fort Lauderdale ADU and land $40,000 apart. Here’s what’s actually in that gap, and how to read a bid so you’re comparing real numbers.
Scope completeness. Some bids include everything from the architectural drawings to the final coat of paint. Others quote only “construction” and then add permits, drawings, impact fees, and utility hookups as supplements after you’ve signed. When you compare bids, look at the total written number, not the presented number at the top of the page.
Material allowances. A bid that says “allowance for fixtures” is a bid that hasn’t priced your fixtures. At Penhallow, we pull from recognized trade brands, KraftMaid, Wellborn, Cambria, Silestone, Caesarstone, Kohler, Moen, and price them into the written number up front. You won’t get a surprise invoice because you chose a Grohe faucet over an off-brand one.
Labor classification. Background-checked, uniformed technicians on every job means you know exactly who is walking onto your property. That standard costs a bit more than unvetted day labor, and it shows up in the price and in the finished work. All Penhallow technicians are background-checked and uniformed, and a live person answers the phone 24/7 if you ever have a question about your project.
Guarantee terms. A 365-Day Done Right Promise costs money to back. If work fails inside the guarantee period, we come back and fix it at no charge, covered in writing on every project. That’s a real financial commitment, and it’s part of why our number is our number, not a starting point.
ADU Construction Cost by Size and Type
In Fort Lauderdale, your finish level and construction type matter more than square footage alone, but size still sets the baseline. Here’s what we see across the market in 2026.
Studio ADU (400 – 500 sq ft)
$90,000 – $140,000. One open living space, a full bath, and a compact kitchenette. This is the entry point for a detached unit and the sweet spot for rental income or a guest suite. In neighborhoods near downtown Fort Lauderdale, this is the most common ADU size because lots are smaller.
One-Bedroom ADU (550 – 700 sq ft)
$130,000 – $180,000. The most popular configuration. A separate bedroom, full bath, kitchen with real counter space, and a stackable washer-dryer. This is what most homeowners in neighborhoods like River Oaks and Imperial Point budget for.
Two-Bedroom ADU (700 – 900 sq ft)
$180,000 – $220,000+. Two bedrooms, a larger bath, a full kitchen, and often a separate HVAC zone. Two-bedroom ADUs make the most sense when you’re housing family long-term or maximizing rent in high-demand areas near Las Olas.
One other number worth knowing: if your home needs other work at the same time, bundling it into one project can reduce mobilization costs. For reference, a home addition in Fort Lauderdale runs $45,000 to $130,000, and coordinating that with an ADU build can save on shared permitting, site prep, and crew scheduling.
FAQs – ADU Construction Cost
How much does an ADU cost per square foot in Fort Lauderdale?
ADU construction in Fort Lauderdale runs $180 to $310 per square foot for a finished unit in 2026. A 600-square-foot one-bedroom at $130,000 works out to about $217 per square foot, while a 500-square-foot studio at $90,000 lands around $180 per square foot. Higher-end finishes and site challenges push the number toward $300 or more. Call (754) 551-2922 and we’ll price your specific lot and scope in writing.
Is it cheaper to convert a garage or build a detached ADU in Fort Lauderdale?
A garage conversion typically runs $30,000 to $80,000 in Fort Lauderdale, while a detached new-build ADU runs $90,000 to $220,000. The gap is $40,000 to $100,000 on average because the garage already has a foundation, walls, and a roof. If your garage is in good structural shape and you don’t mind losing the parking space, conversion is the most cost-effective path.
Can you build an ADU in Fort Lauderdale for under $90,000?
Rarely, and we’d be suspicious of any bid that promises it. A minimal garage conversion with basic finishes can land near $30,000 to $60,000, but a detached ADU built to Broward County code with impact windows, a proper kitchenette, and a full bath realistically starts around $90,000. Any number below that usually excludes permits, drawings, or finishes. We give you one written price that covers all of it.
How long does ADU construction take in Fort Lauderdale?
Most ADU projects in Fort Lauderdale take 6 to 12 months from design approval to final inspection. Permitting alone can take 6 to 12 weeks in the City of Fort Lauderdale, and construction on a detached unit typically runs 4 to 8 months. Garage conversions move faster, often 3 to 5 months of construction. We’ll give you a defined arrival window and a written schedule before work starts.
Does Penhallow Remodeling handle Fort Lauderdale ADU permits?
Yes. We coordinate the full permit package with the City of Fort Lauderdale and Broward County, including zoning review, building permits, impact fees, and inspections. You don’t chase paperwork, we do. The cost is included in your written price, so there’s no surprise fee when the permit is ready to pull.
What’s the cheapest way to add living space in Fort Lauderdale?
A garage conversion at $30,000 to $80,000 is the cheapest legal way to add a separate living unit. If you need something smaller, a permitted interior reconfiguration, like turning an enclosed porch into a bedroom, can run less but won’t create a standalone rental unit. For most homeowners, a garage conversion delivers the best cost-per-square-foot in Fort Lauderdale.
The Penhallow Way to Price an ADU
Most of the unhappy ADU stories we hear in Fort Lauderdale start the same way: a verbal number that sounded great, a contract that didn’t match it, and a project that stalled halfway through. Trevor Nash built our process to eliminate exactly that. Say the price before the work. Show up in the window we gave. Leave the place cleaner than we found it. That’s The Kingswell Way, and it’s been the operating standard since 2004.
Here’s what that looks like in practice. We walk your property, review your lot survey, check your electrical panel, and talk through what you actually want the space to do. Then we put a written price in front of you, not a range, not a ballpark, a number. That number includes materials from brands like KraftMaid, Wellborn, Cambria, Silestone, Caesarstone, Kohler, and Moen, so the products behind the guarantee are as solid as the promise itself. If something isn’t right inside the first year, the 365-Day Done Right Promise means we come back and fix it at no charge. And if a repair fails, the follow-up visit doesn’t cost you a service call or a re-inspection fee.
We know you’ve probably been burned before. That’s exactly who this is for. Call (754) 551-2922 and talk to a real person, 24/7, not a voicemail maze. We’ll give you a free estimate with numbers you can hold us to.
Pricing reflects the Fort Lauderdale market as of 2026. Penhallow Remodeling Fort Lauderdale offers free estimates – call (754) 551-2922.
Written by Trevor Nash, Owner at Penhallow Remodeling Fort Lauderdale, serving Fort Lauderdale since 2004.
What Our Customers Say
"Did our whole kitchen. The written estimate held, which after reading remodel nightmares online I did not take for granted. Showed up every morning on time and the crew was clean and polite."
- Warren Updike"We'd been burned by a contractor before who disappeared halfway. Penhallow finished on time and stood behind everything. The written price gave me peace of mind the whole way."
- Simone Clarke"Redid two bathrooms at once. The crew protected the floors and cleaned up every single day before leaving. Quote was detailed and there were no mystery charges at the end."
- Tricia Dawson
