Fast, Reliable New Detached ADU Across Fort Lauderdale
A new detached ADU in Fort Lauderdale typically costs $280,000-$420,000 all-in, from permit set through final inspection, with waterfront lots in Rio Vista and Las Olas Isles running higher due to flood elevation work. Most projects take 7-11 months from signing to certificate of occupancy. If you’re weighing a detached unit against a garage conversion, call (971) 497-2402 and we’ll walk you through the numbers for your specific lot.
We know Fort Lauderdale’s streets, its canal setbacks, and its HVHZ code requirements the way only a design-build team working here every week can. The salt air off the Intracoastal doesn’t just age a building. It picks specific materials to destroy, and if you specify the inland version of a window frame or roof fastener, you’ll pay for it twice. That’s the conversation we start with every Fort Lauderdale homeowner.
Why Ellery ADU Studio Is Fort Lauderdale’s Preferred New Detached ADU Company
Ellery ADU Studio has designed, permitted, and built 900+ ADUs since 2015, every one with a written price before work started and a documented photo record when work was complete. The studio is led by Nadia Ellery, who built the practice around a single contract for the drawings, the permit set, and the construction, so neither a designer nor a builder can point at the other when something is off. Fort Lauderdale homeowners repeatedly tell us the same thing: they’d already spoken to two or three contractors who couldn’t produce a line-item scope, let alone a permit set worth showing the city. We hand you the permit set and the written price at the same meeting.
Our Fort Lauderdale work is governed by The Haven Standard. Clause 1 puts the price in writing before any work begins. Clause 5 locks the scope at signing, so there’s no door-side upsell. And the 365-Day Done Right Promise, in writing, means that if the finished ADU is not built to the permitted drawings, we make it right. A live person answers calls 24/7, and we offer a Free Second Opinion on any written estimate you’ve already collected.
Our New Detached ADU Services in Fort Lauderdale
Custom Built ADU
A custom detached ADU in Fort Lauderdale is the right call when your lot has constraints a stock plan won’t solve, like a rear-yard setback stitched tight against a seawall or a coral-rock substrate that demands a specific foundation approach. We draw the unit around your lot’s reality, then build it to the same permit set the city approved. On canal-front lots, that often means a raised stem-wall foundation to meet Broward County’s base flood elevation plus freeboard, with the finished floor sitting 8-10 feet above grade. The price reflects the engineering, not a markup for surprises.
Prefab ADU Installation
Prefab ADUs from Abodu and Cover work in Fort Lauderdale when the lot access is straightforward and the flood elevation is already manageable. We coordinate the factory build, the crane placement, and the site work under the same contract as the permit set. What we flag early: prefab panels arrive with factory-standard fasteners, and near the Intracoastal, those need to be swapped for hot-dip galvanized or stainless before the building sees its first salt season. We include that in the written price from day one.
Modular ADU
Modular ADUs give Fort Lauderdale homeowners a faster path to a finished unit, especially on Victoria Park and Coral Ridge lots where the house is tight to the property line and a stick-built ADU would mean months of staging logistics. We specify Dvele systems where the budget supports a high-performance envelope, and we handle the Florida HVHZ tie-downs, impact-rated glazing, and flood-zone foundation work that modular factories don’t ship from the line. The module is the starting point; the Fort Lauderdale detailing is what gets it through inspection.
Studio ADU
A studio ADU, 400-600 square feet, is the most common detached unit we permit in Fort Lauderdale’s 6,000-8,500 sq ft lots, particularly where the rear yard is partially consumed by a seawall setback. In Coral Ridge Isles and Las Olas Isles, the city’s standard rear-yard setback and the seawall setback together can consume the entire buildable rear yard, which often pushes owners into a side-yard studio. We’ve built enough of them to know exactly which side of the lot gives you usable square footage without triggering a variance.
1-Bed & 2-Bed ADU
One-bed and two-bed detached ADUs in Fort Lauderdale run larger, typically 600-900 square feet, and the structural decisions multiply quickly. Where a studio can sometimes avoid full flood-zone remediation on a high lot, a two-bed almost never can east of Federal Highway. We plan the foundation, the elevation, and the material spec as one package so the numbers you see in the written price are the numbers you pay.
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 Fort Lauderdale
We specify and coordinate prefab and modular systems from Abodu, Cover, and Dvele, and we clad our custom builds in James Hardie plank with stainless fasteners because that combination survives Fort Lauderdale’s canal air. We keep local supply relationships in Broward County so lead times on impact-rated windows and marine-grade hardware don’t stall a permit-ready project. When a Fort Lauderdale homeowner asks which brand we’d choose for their lot, we name one and explain why, in writing, before any contract is signed.
Common New Detached ADU Problems We See in Fort Lauderdale Homes
- Salt-eaten roof fasteners and hurricane straps. Zinc-plated roof fasteners and standard Simpson straps rust through within 5-7 years of salt air near the Intracoastal, leaving sheathing loose and HVHZ re-roof inspections failing. We open up old CBS garages and find straps so corroded they snap by hand. Hot-dip galvanized or stainless is the only spec that holds.
- Cheap aluminum window frames pitting and jamming. Canal-front ADUs fitted with bargain aluminum windows show pitting within a single storm season, and the sashes seize shut exactly when you need them closed. We specify impact-rated, marine-anodized or stainless-hinge frames east of Federal Highway, no exceptions.
- Unsealed paver joints wicking saltwater during king tides. Rear-yard pavers with unsealed joints draw saltwater up by capillary action during Fort Lauderdale’s king tides, heaving the patio and cracking the ADU’s slab edge within three years. We seal every joint and slope the hardscape away from the structure.
- Pre-1970 slabs below current flood elevation. The 1950s-1970s CBS homes across Victoria Park, Rio Vista, and Coral Ridge almost universally sit below current FEMA thresholds. We’ve measured slabs 2 feet or more under base flood elevation, which means the conversion isn’t a cosmetic project, it’s a lift or a stem-wall pour before any framing goes up.
Pricing for New Detached ADU in Fort Lauderdale, FL
A studio ADU in Fort Lauderdale typically runs $280,000-$350,000 all-in, drawings through final inspection. A 1-bed or 2-bed detached unit runs $340,000-$420,000, and a canal-front lot in Rio Vista or Las Olas Isles can push $450,000+ when flood elevation remediation, seawall setbacks, and marine-grade finishes are all on the table. That’s the coastal-spec price, and it’s the one we quote. An inland-spec version of the same floor plan might come in $60,000-$90,000 cheaper, but the salt air near the Intracoastal will eat through those savings within a decade, starting with the fasteners and the window frames. Our New Detached ADU team writes every Fort Lauderdale quote with the materials and fasteners named, line by line, before you sign. Call (971) 497-2402 for a written price on your lot.
We Also Serve Cities Near Fort Lauderdale
Our crews work across Fort Lauderdale, Plantation, Pompano Beach, Hollywood, and Margate. The flood-zone math changes a lot when you cross out of the canal grid into Plantation or Sunrise, which is exactly why we quote every address independently rather than applying one Broward County price sheet.
Serving Fort Lauderdale, FL - Our Local Coverage Area
We’re based in the Fort Lauderdale 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 - New Detached ADU in Fort Lauderdale
Because Fort Lauderdale’s canal-front lots sit under FEMA Zone AE, which forces finished floors 8-10 feet above grade, and Broward’s HVHZ code demands impact-rated glazing and prescriptive roof-to-wall connections that inland municipalities don’t enforce with the same rigor. Plantation and Sunrise lots rarely touch a seawall setback or a salt-air corridor, so the identical floor plan can drop $60,000-$90,000 in hard costs. Call (971) 497-2402 and we’ll line up the two versions for your address so you can see exactly where the money goes.
In many cases, no, not in the traditional rear-yard position. The city’s standard rear-yard setback and the seawall setback together can consume the entire buildable rear yard in neighborhoods like Rio Vista, Las Olas Isles, and Coral Ridge Isles, effectively outlawing a conventional backyard detached unit. The workaround is usually a side-yard unit or a garage conversion, which is why we always run the setback math before we draw anything. Call (971) 497-2402 and we’ll tell you what your specific lot allows.
Hot-dip galvanized or stainless steel, exclusively, east of Federal Highway. Zinc-plated fasteners, the standard inland spec, rust through within 5-7 years of Fort Lauderdale salt air, and we’ve pulled enough rotted Simpson straps out of 1960s CBS garages to know that finding them during a re-roof inspection is a far more expensive lesson than specifying correctly the first time. The fastener spec is written into your permit set, Clause 5 locks it at signing, and the 365-Day Done Right Promise backs it in writing.
Yes, but only with the right site work. On a coral-rock lot off Cordova Road in Rio Vista, our crew opened up a 1962 CBS garage the owner wanted as a detached ADU and found the slab was 2.1 feet below current flood elevation and the original roof straps were rusted through. We lifted the structure, poured a raised stem-wall foundation to meet Broward’s BFE plus freeboard, re-framed with hot-dip galvanized hurricane ties, and clad the exterior in James Hardie plank with stainless fasteners. The project passed HVHZ inspection on first review. A prefab or modular unit from Abodu, Cover, or Dvele needs the same foundation and tie-down upgrades. We cost them into the written price up front, not as a change order later.
Impact-rated marine-anodized aluminum or stainless-hinge frames, period. Cheap aluminum frames pit and jam shut in canal-front homes after one storm season, and the replacement cost plus re-inspection is not a discount. We specify the window alloy in the permit set and price it in the written scope before you sign anything. Call (971) 497-2402 and ask for the Fort Lauderdale coastal-spec window sheet on your estimate.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Fort Lauderdale with documented permit sets and written pricing since 2015.