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Boxabl Home Additions & ADU: The Fort Lauderdale Owner’s Guide
A Boxabl home addition or ADU project in Fort Lauderdale typically runs $45,000 to $130,000 installed, depending on size, site prep, and utility connections. We handle the full scope: foundation or pier work, delivery coordination, utility hookups, finish out, and all permitting through the City of Fort Lauderdale. Most owners reach out after the initial excitement wears off and reality sets in: the unit is sitting on a lot that wasn’t properly prepped, the electrical service can’t handle the load, or the interior needs finishing that the factory never included.
What surprises most people is that a Boxabl unit is only about 70 percent finished when it arrives. The shell is factory-built, yes, but someone has to tie it into the grid, connect plumbing, install the kitchenette, finish the bath, and trim everything out. That’s where we come in. Isaac Pruett has seen enough of these to know exactly what the factory leaves out and what Fort Lauderdale code requires on top of it.
Key Takeaways
- Installed Boxabl additions and ADUs in Fort Lauderdale typically run $45,000 – $130,000
- Site prep, utility connections, and interior finish work are almost never included in the base unit price
- We provide a written price before any work begins, with a 365-Day Done Right Promise on our portion of the build
- Every crew member is background-checked and identity-verified under the Threshold Standard, with name and photo provided before arrival
Which Boxabl Models This Applies To
The Casita model is the one we see most often in Fort Lauderdale backyards, though we’ve worked on projects involving larger multi-module configurations as well. Each Boxabl arrives with a factory label near the entry door and a serialized data plate on the steel frame – photograph both before calling anyone. That plate tells us the production year, the module config, and whether it’s wired for a 100-amp or 200-amp service, which matters more than most people realize.
One compatibility gotcha: older Boxabl units were built around a 50-amp hookup design that doesn’t meet current Fort Lauderdale requirements for an accessory dwelling unit with a full kitchen. If you bought an early production unit and are now trying to get it permitted as an ADU, plan on a service upgrade. For interior finish work, you’re not locked into any single brand. We spec KraftMaid for cabinetry and Cambria or Silestone for counters when owners want surfaces that hold up to South Florida humidity without warping or staining. Mason Remodeling Co Fort Lauderdale is an independent service provider and isn’t affiliated with Boxabl itself, which means we’re free to tell you when an aftermarket equivalent genuinely outperforms the factory-spec part.
Styles & brands we work with
Signs Your Boxabl Home Additions & ADU Is Failing
- Tripped breakers or flickering lights whenever the AC kicks on. The unit’s factory electrical panel is being asked to carry more than it was sized for, especially once a mini-split, water heater, and kitchen appliances are all running. This is the number one thing we correct on Boxabl projects in Fort Lauderdale.
- Condensation beading on interior walls near the roofline. The factory vapor barrier was designed for a drier climate than ours. In Fort Lauderdale’s humidity, the seam where wall meets ceiling becomes a sweat point if ventilation isn’t upgraded.
- A door that drags or won’t latch cleanly. Portable structure frames settle, especially on pier foundations in sandy soil. A dragging door tells you the unit has shifted and needs leveling before the misalignment stresses the corner welds.
- Water staining around the utility chase or under the wet wall. The factory plumbing rough-ins use flexible line sets that can kink during transport. We’ve opened walls in Victoria Park and found kinked supply lines ready to burst.
- Musty smell that won’t clear out. In our climate, that’s almost always a sign that the weep system at the base track isn’t draining correctly. Standing water in the track wicks up into the wall assembly.
See the difference
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After
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AfterReplacement Cost & What’s Included
For a full Boxabl home addition or ADU project in Fort Lauderdale, expect $45,000 to $130,000. The low end covers a straightforward Casita placement with minimal site grading, basic utility tie-ins, and standard finish materials. The high end reflects multi-module configurations, full ADU code compliance with separate metering, upgraded electrical service, impact-rated windows, and premium interior finishes.
Your written quote from Mason Remodeling includes every line item: site prep, foundation or piers, utility runs, permits, interior finish, and final inspection. Nothing gets added on as a surprise because nothing starts until you’ve seen the full price on paper. Our work is covered for 365 days from the completion date. If something isn’t right within that year, we come back and make it right at no charge.
DIY or Call Us?
A homeowner can safely do a few things before anyone shows up: photograph the serial plate, check that the landing area is clear, and note where the nearest electrical panel and sewer line sit. That’s genuinely useful information for the estimate call. What you shouldn’t do is attempt any electrical tie-in, plumbing connection, or structural leveling yourself. A Boxabl’s steel frame under load is a high-stakes assembly, and a wrong move on the utility side can cause injury or a fire hazard inside the wall assembly.
If you’ve got a unit on the ground in Fort Lauderdale and it isn’t finished, permitted, or running right, call us at (754) 354-3720. We tell you what we found, what it takes to fix it, and what it will cost – before we touch a thing.
FAQs
A properly sited and maintained Boxabl shell should give you 20 to 30 years in Fort Lauderdale, but the factory finishes won’t survive our humidity that long without upgrading ventilation and addressing the weep drainage at the base. Call (754) 354-3720 and we’ll assess what your specific unit needs.
Almost always, yes. Leveling issues, electrical undersizing, ventilation problems, and interior finish failures are all repairable without replacing the module itself. Replacement is only warranted when the steel frame has been structurally compromised by corrosion or collision damage. Call us for an honest assessment – the estimate is free.
Most single-module projects in Fort Lauderdale take 8 to 16 weeks from permit to final inspection, with multi-module ADUs running longer depending on utility work. Site prep and city permitting typically consume the first third of that timeline. Call (754) 354-3720 for a schedule specific to your lot.
We keep common replacement components on hand for Fort Lauderdale Boxabl projects: service panels, HVAC mini-split kits sized for the Casita footprint, door leveling hardware, and humidity-rated interior finish materials. Anything we don’t stock by brand name, we source by specification. Call (754) 354-3720 and we’ll tell you straight whether the part is on our truck or on order.
If you own a Boxabl in Fort Lauderdale and need someone who understands what these units require to work as a real living space, call (754) 354-3720 for a free estimate. We’ll give you a written price before any work starts, and you’ll know exactly who is coming to your door – name, photo, and credentials included.
Written by Isaac Pruett, Owner, Mason Remodeling Co Fort Lauderdale at Mason Remodeling Co Fort Lauderdale, serving Fort Lauderdale and nearby areas.
