Fast, Reliable New Detached ADU Across Hollywood
A new detached ADU in Hollywood, FL typically runs $180,000-$320,000 all-in, from permit drawings through final inspection, depending on whether you build custom on-site or coordinate a prefab system. Permit review in Hollywood takes 6-10 weeks for a straightforward flatland lot, and construction runs 6-9 months. We coordinate the entire thing under one contract at one written price. Call (971) 497-2402 to schedule a free estimate and a written scope.
We work across Hollywood every week, from the 1920s bungalow courts near Young Circle down to the canal-front lots off Sheridan Street. Hollywood’s housing stock spans three generations of Florida construction, and each one has its own code triggers when you add a detached unit. We know them cold. When you call, you get a live person, not a voicemail queue.
Why Ellery ADU Studio Is Hollywood’s Preferred New Detached ADU Company
Ellery ADU Studio has designed, permitted, and built 900+ ADUs since 2015, and Hollywood lots keep our team honest. The flatland blocks between Federal Highway and Dixie Highway are dense with 1950s concrete-block homes where FEMA flood zones and local setback rules collide. The newer developments west of I-95 sit on fill with different soil bearing. A New Detached ADU on either side of town needs a different foundation strategy, and our team reads the survey before we write a single line item.
We work as a design-build studio, not a contractor juggling subcontractors. The drawings, the permit set, and the construction are one contract at one written price. That means no designer pointing at the builder when a Hollywood planner flags a setback variance. Nadia Ellery has built this practice on documentation: every visit includes a photo record, every change order is written and approved before work moves, and every finished ADU carries our 365-Day Done Right Promise in writing.
Hollywood homeowners researching an ADU have already read the three-star reviews. They want the price on the page. So do we. Under Haven Standard Clause 1, you get a written price before any work begins, always.
Our New Detached ADU Services in Hollywood
Custom Built ADU
A custom detached ADU on a Hollywood lot gives you full control over the floor plan, but it also means your permit set has to survive Hollywood’s Community Development Department review. We handle the full set: site plan, structural drawings, Title 24 energy calcs, and the fire-hardening spec if you’re in a hillside zone. Custom builds in Hollywood typically run $220,000-$320,000 depending on finishes and site conditions.
Studio ADU
A detached studio ADU, 400-500 square feet, is the most common project we build in Hollywood’s flatland neighborhoods. On a typical 50-foot-wide lot off Hollywood Boulevard, a studio fits comfortably in the rear yard without triggering a variance. Budget $180,000-$240,000 for a studio with a bath and kitchenette, all-in through final inspection.
Prefab ADU Installation
We specify and coordinate prefab systems from Cover, Dvele, and Boxabl for Hollywood lots where speed and a locked factory price matter. A prefab unit still needs a Hollywood permit, a site-built foundation, and utility connections. We handle all three under the same contract. Prefab installation in Hollywood typically runs $190,000-$260,000 depending on the module and site prep.
Modular ADU
Modular construction appeals to Hollywood homeowners who want factory precision without the full prefab floor-plan constraint. We coordinate the module delivery, crane placement if your lot allows, and the connection to Hollywood’s water and sewer laterals. Modular ADUs in Hollywood run $200,000-$280,000, with the site work often the swing line item.
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 Hollywood
We work with prefab and modular manufacturers including Cover, Dvele, and Boxabl, and we stock local parts for Hollywood customers so a warranty issue doesn’t mean waiting on a West Coast shipment. Our crews are background-checked, uniformed, and carry a documented photo record on every visit. If your prefab unit needs a repair under warranty, we coordinate directly with the manufacturer. You never chase the paperwork.
Common New Detached ADU Problems We See in Hollywood Homes
- Floating garage slabs. Many 1920s-1930s detached garages in the flatland blocks near Hollywood Boulevard sit on a floating concrete slab with no perimeter footing. That satisfies no current habitable-space code, and the city won’t approve a change-of-occupancy until you underpin. Budget $15,000-$25,000 if the slab corner inspection confirms it.
- Fire-hardening triggers in the hills. Hollywood Hills parcels above Franklin Avenue fall inside the Very High Fire Hazard Severity Zone. A detached ADU there needs Class A roofing, multi-pane windows, and ember-resistant vents. That’s $20,000-$40,000 over a flatland build, and it’s non-negotiable once the city flags the zone.
- Knob-and-tube and armored-cable wiring. Opening up a 1930s garage for an ADU conversion routinely exposes wiring that looked fine behind the panel but fails current code. A full re-wire is a five-figure line item if it wasn’t written into the allowance. We write allowances into the contract before we open a single wall.
- HPOZ visual-compatibility review. Several flatland blocks sit inside Historic Preservation Overlay Zones like Melrose Hill. A new detached ADU there must pass a visual-compatibility review, which can mean matching the original lath-and-plaster or cladding style. That’s a hurdle essentially absent in adjacent unincorporated county areas.
Pricing for New Detached ADU in Hollywood, FL
Here’s what we see in Hollywood’s current market, written plainly:
- Studio ADU (400-500 sq ft): $180,000-$240,000 all-in
- 1-Bed ADU (550-700 sq ft): $210,000-$275,000 all-in
- 2-Bed ADU (750-900 sq ft): $260,000-$320,000 all-in
- Prefab/Modular system: $190,000-$280,000 including site work and utility connections
- Slab underpinning on a 1920s garage: $15,000-$25,000 if your slab lacks a perimeter footing
- VHFHSZ fire-hardening package: $20,000-$40,000 above Franklin Avenue
Every one of these ranges is a written price before any work starts. We don’t quote over the phone and adjust later. If you already have a written estimate from another builder, bring it in. We’ll give you a free second opinion and line-by-line comparison. Call (971) 497-2402 to schedule a free estimate.
We Also Serve Cities Near Hollywood
Our New Detached ADU in Hollywood team also covers North Miami Beach, Fort Lauderdale, Miami Gardens, and Plantation. Scheduling is coordinated from our South Florida metro office, and crews serve Hollywood locally. Same contract, same written price, same 365-Day Done Right Promise.
Serving Hollywood, FL - Our Local Coverage Area
We’re based in the Hollywood 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 Hollywood
Because the city won’t approve a change of occupancy until the slab’s bearing condition is verified. Many flatland garages built in the 1920s and 1930s sit on floating slabs with no perimeter footing. We pull up a slab corner to inspect before we write your quote, which is why our written price doesn’t change mid-permit. Call (971) 497-2402 for an exact quote, and we’ll do the inspection as part of the free estimate.
It means your ADU must meet ignition-resistant construction standards: Class A roofing, multi-pane windows, and ember-resistant vents. That adds $20,000-$40,000 over a flatland build. It applies even to a garage-to-studio conversion that wouldn’t need fire-rated assemblies two miles south. Schedule a free estimate at (971) 497-2402 and we’ll confirm your zone and write the fire-hardening spec into the permit set.
We replace it. Knob-and-tube fails current code and no Hollywood inspector will sign off on a change of occupancy with it live. We write a wiring allowance into your contract before walls open, and if we find armored-cable that also fails, the allowance covers it. You approve every surprise in writing before we touch it. Call (971) 497-2402 to see what a written allowance looks like.
Yes, if your hillside parcel is a cut-and-fill lot from the 1950s-1970s, any ADU addition triggers grading permits and geotechnical review. We handle that paperwork as part of the permit set. A flatland lot doesn’t trigger the same review. Call (971) 497-2402 for a written quote that includes the grading scope before work starts.
It means the HPOZ board reviews your ADU’s exterior against the original architectural character of the block. In Melrose Hill, that may mean matching the lath-and-plaster finish or the original cladding style. We handle the compatibility submittal, and we’ve passed these reviews on Craftsman and Spanish Colonial Revival lots. Call (971) 497-2402 if your lot sits in an HPOZ and you want a written assessment.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Hollywood since 2015.