ADU in Boca Raton, FL
ADU design and permitting in Boca Raton means navigating something most Florida cities don’t have: hundreds of private HOA architectural review boards that can kill a project the city has already approved. The housing stock is mostly concrete block stucco built between the late 1960s and early 1990s, where screened pool enclosures consume most of the usable backyard and the shallow water table complicates any new foundation. We handle the full design-build sequence under one contract at one written price, so the drawings, the permit set, and the construction can’t be blamed on two different parties. Call (971) 497-2402 to start with a written price.
Why Boca Raton Homes Are Different
Boca Raton’s single-family neighborhoods are dominated by CBS homes, concrete block stucco construction from roughly 1967 through 1993. Ranch and Mediterranean layouts in the 1,500 to 3,500 square foot range sit on lots where the screened pool enclosure already occupies most of the rear yard, leaving very little buildable ground for a detached ADU. This is why garage conversions are such a serious option here. A deep single-car garage in Camino Gardens or near Royal Palm Yacht & Country Club can convert efficiently, but the original 1970s electrical service is often sized for a much simpler load, so the panel upgrade becomes a required line item, not an option.
The bigger constraint is legal, not physical. Boca West, Broken Sound, and the smaller gated subdivisions all operate private deed restrictions that Florida’s 2020 ADU preemption law, HB 1339, does not override. The state says a municipality can’t prohibit ADUs in single-family zones. A private HOA covenant can still say no. We have seen Architectural Review Committees deny ADU applications on aesthetic grounds even after the City of Boca Raton issued a building permit. That leaves a homeowner holding a valid city permit they cannot legally act on. The sequence that matters here is written HOA approval first, city application second. Any contractor who files the city permit before the HOA letter is in hand is setting the client up to pay for a permit they can’t use.
Our Main Boca Raton Services
Most Boca Raton homeowners reach us for two services especially: converting an existing garage and building a new detached unit in whatever yard space remains after the pool enclosure. Each has its own dedicated page below.
Garage Conversion ADU in Boca Raton
A garage conversion in Boca Raton usually works with what’s already there: a concrete slab, an existing roofline, and a room that’s already conditioned by the home’s main envelope in many cases. The local complication is the panel. Homes built with single-car garages in the 1970s often carry 100-amp service sized for a refrigerator, a dryer, and a few window units. When you add a full ADU with its own kitchen, bath, and mini-split, the math stops working. We include the panel upgrade as a named line item in the written price, not as a discovery later. Read the full breakdown at Garage Conversion ADU in Boca Raton.
New Detached ADU in Boca Raton
A new detached ADU in Boca Raton competes with the pool enclosure for the same rear yard. In many Camino Gardens lots the enclosure leaves a narrow side strip, which pushes the design toward a compact footprint or a second-story unit. Wind load is the other driver. Boca Raton sits in the South Florida high-velocity hurricane zone, and Florida Building Code design pressures of 150 to 175 mph mean stronger framing, impact-rated openings, and a roof assembly that would be overkill in Orlando but is code here. See the full scope at New Detached ADU in Boca Raton.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
ADU Design & Permitting in Boca Raton
ADU Design & Permitting in Boca Raton is where the project is won or lost. The two factors that decide feasibility are the HOA covenant language and the existing electrical service, and both have to be documented before any design work begins. We produce a permit set that names every material, every wind-load rating, and every elevation, then we hold the construction to that same set under one contract. ADU Design & Permitting here means the drawings, the structural calculations, and the city filing are one deliverable, priced in writing before the first survey crew arrives.
Site Assessment
Signs you need it
The lot has a pool enclosure, the HOA has a pending design review, or the existing slab elevation is lower than the finished floor of the main house.
What it costs in Boca Raton
A site assessment in Boca Raton typically runs $1,500 to $4,000 depending on survey scope, soil testing, and HOA document review.
How we do it
We pull the HOA covenants first, then run the survey, the soil boring, and a utility locate before a single drawing is started.
Permit Application
Signs you need it
The HOA has issued written approval and you’re ready to move to the City of Boca Raton building department.
What it costs in Boca Raton
Permit application and filing in Boca Raton typically runs $3,000 to $8,000 including city fees, plan review, and resubmittals.
How we do it
We file the full permit set after the HOA letter is in hand, then track plan review comments and resubmit until the permit is issued.
What ADU Design & Permitting Costs in Boca Raton
| Item | Typical range in Boca Raton |
|---|---|
| Site assessment and survey | $1,500-$4,000 |
| Permit application and filing | $3,000-$8,000 |
| Full design and permit set | $15,000-$40,000 |
How long does ADU permitting take in Boca Raton?
Most Boca Raton ADU permit sets take 3 to 6 months from survey to issued permit, assuming HOA approval is already in writing. HOA review adds 30 to 90 days on top of that.
Does the HOA have to approve my ADU before I file with the city?
Yes. Boca Raton’s HOA communities can deny an ADU even after the city issues a permit. We require written HOA approval before filing, which protects your permit fees from being wasted.
Junior ADU & Interior Conversion in Boca Raton
A Junior ADU or interior conversion in Boca Raton works within the footprint you already own, which is the entire advantage in neighborhoods where a detached unit has no room to go. Most of these homes were built as ranch layouts with a guest bedroom or den that can convert into a self-contained unit without touching the exterior walls. The work still has to meet current electrical and egress codes, and that’s where the 1970s panel problem shows up again. Junior ADU & Interior Conversion under our contract means the design, the permit, and the build are one written price.
Interior JADU
Signs you need it
You have a spare bedroom, den, or office with its own exterior door or a wall we can open to add one.
What it costs in Boca Raton
An interior JADU in Boca Raton typically runs $85,000 to $150,000 all-in, drawings through final inspection.
How we do it
We convert the room into a self-contained unit with its own kitchenette, bath, and separate entrance, then file the permit set.
Attached Addition ADU
Signs you need it
The interior has no spare room to convert, but the floor plan has an exterior wall that can take an addition.
What it costs in Boca Raton
An attached addition ADU in Boca Raton typically runs $200,000 to $350,000, with impact-rated openings and wind-load framing included.
How we do it
We extend the existing footprint with a new attached unit, matching the roofline and bringing the whole project under one permit.
What Junior ADU & Interior Conversion Costs in Boca Raton
| Item | Typical range in Boca Raton |
|---|---|
| Interior JADU | $85,000-$150,000 |
| Attached addition ADU | $200,000-$350,000 |
| Above-garage ADU | $180,000-$300,000 |
Can I convert a bedroom into a JADU without an exterior door?
Yes, if the bedroom has a window meeting egress requirements or we can add a door on an existing exterior wall. The permit set documents the path of travel and the egress opening.
Will a JADU trigger a property tax reassessment in Boca Raton?
A JADU can trigger a reassessment on the added value, not the entire parcel. We document the scope in the permit set so the added-value basis is clear to the county appraiser.
ADU Site Prep & Utilities in Boca Raton
ADU Site Prep & Utilities in Boca Raton is where the shallow water table and the electrical panel set the price. A detached unit on the back of a Camino Gardens lot sits on soil that’s often saturated within three feet of grade, so the slab elevation and the moisture barrier are not optional details. The existing panel is the other half of the job, and in homes built before 1990 it’s usually undersized for the new load. ADU Site Prep & Utilities means we price the foundation, the panel, and the underground connections as named line items in the written quote, not as change orders.
Foundation & Grading
Signs you need it
The lot is flat, the water table is high, or the pool enclosure already occupies the best-drained portion of the yard.
What it costs in Boca Raton
Foundation and grading in Boca Raton typically runs $10,000 to $30,000 depending on soil bearing, fill, and slab elevation.
How we do it
We run the soil boring, set the finished floor elevation above the seasonal high water table, and pour the slab with a full moisture barrier.
Electrical Panel Upgrade
Signs you need it
The main panel is 100 or 125 amps, or there’s no spare breaker space for the ADU’s subpanel.
What it costs in Boca Raton
An electrical panel upgrade in Boca Raton typically runs $3,000 to $8,000 for a 200-amp service replacement.
How we do it
We replace the main service, run the subpanel feeder to the ADU, and document the load calculation in the permit set.
What ADU Site Prep & Utilities Costs in Boca Raton
| Item | Typical range in Boca Raton |
|---|---|
| Foundation and grading | $10,000-$30,000 |
| Electrical panel upgrade | $3,000-$8,000 |
| Plumbing lateral | $5,000-$15,000 |
Is the water table really a problem for an ADU foundation in Boca Raton?
Yes. The shallow water table across Palm Beach County means a slab set too low will wick moisture through the floor assembly. We set the finished floor elevation with this in mind.
Will the panel upgrade be included in the written price?
Yes, if the panel is undersized we name the upgrade as a line item in the written quote before work starts. There is no discovery pricing later.
Brands We Service in Boca Raton
We specify and coordinate prefab systems from Abodu, Cover, and Dvele within the same single contract. When a Boca Raton project calls for a James Hardie cladding system, we order through our supply chain and carry the warranty through installation. See our brands for the full list and what each system costs in this market.
Pricing for ADU in Boca Raton, FL
| Service | Typical range in Boca Raton |
|---|---|
| Site assessment and survey | $1,500-$4,000 |
| Permit application and filing | $3,000-$8,000 |
| Full design and permit set | $15,000-$40,000 |
| Interior JADU | $85,000-$150,000 |
| Attached addition ADU | $200,000-$350,000 |
| Above-garage ADU | $180,000-$300,000 |
| Foundation and grading | $10,000-$30,000 |
| Electrical panel upgrade | $3,000-$8,000 |
| Plumbing lateral | $5,000-$15,000 |
What pushes an ADU price up in Boca Raton more than anything else is the HOA. A drawn-out Architectural Review process adds design revision cycles, and a denial can force a complete redesign. Wind-load and impact-rated opening requirements also add 10 to 20 percent over what the same square footage would cost in Central Florida. Every project we price in Boca Raton comes with a written price before work begins, per Haven Standard Clause 1.
Neighborhoods We Serve in Boca Raton
We work across Boca Raton, from the gated country club communities to the older ranch neighborhoods where the lot dimensions are more forgiving. Response time for an initial site visit is typically within one week, and the written price follows the site assessment.
- Boca West
- Broken Sound
- Camino Gardens
- Royal Palm Yacht & Country Club
- Boca Del Mar
Service Area - Cities Near Boca Raton
Our Boca Raton crews also cover the neighboring cities along the Palm Beach and Broward line. If your property is in Delray Beach, FL, Pompano Beach, FL, Boynton Beach, FL, or Margate, FL, the same written-price model applies.
Serving Boca Raton, FL - Our Local Coverage Area
We’re based in the Boca Raton 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 About ADU in Boca Raton
In most cases no. Florida’s HB 1339 stops municipalities from prohibiting ADUs, but private deed restrictions still stand. Get written HOA approval before paying for any city permit fees.
Most Boca Raton ADU projects run 10 to 16 months, with HOA review adding 1 to 3 months before the city application is even filed. Construction itself is typically 5 to 8 months after the permit is issued.
Yes. HOA covenant analysis and the Architectural Review Committee application are part of our design and permitting scope in Boca Raton. We file the HOA package before the city application, in writing, as part of the permit set.
For a written price on any ADU project in Boca Raton, call (971) 497-2402 to schedule your free site assessment. We’ll put the number on the page before any work begins.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Boca Raton Customers Say
"The permit set and the build were one contract with one number. Our neighbours used two firms and spent a year watching them blame each other."
- Helena V."The rental income has covered the payment since the second month. They were realistic about the numbers rather than optimistic."
- Odette N."They walked us through setbacks and utility capacity before we paid anything, and told us one of our two options was not going to get approved."
- Mireille T.