Fast, Reliable New Detached ADU Across Wellington
A new detached ADU in Wellington typically costs $220,000 to $380,000 all-in, from drawings to final inspection, with the full permit set and a written price locked before any work starts. The number moves based on site conditions, the Architectural Review Board path, and whether your lot is inside the Equestrian Preserve overlay. At Ellery ADU Studio, we design, permit, and build under one contract, which means the drawings, the submittal packet, and the construction are all on us. Call (971) 497-2402 and we’ll walk you through what applies to your specific lot before you spend a dollar on plans.
Wellington is not a generic Palm Beach County suburb. The village runs its own zoning code, its own Architectural Review Board, and roughly 9,000 acres of Equestrian Preserve overlay that caps impervious surface per lot. That combination changes which ADU designs get approved, how long review takes, and what the site plan has to show. We’ve filed enough detached ADU submittals here to tell you the difference between a project that clears the board in one cycle and one that bounces back for resubmission.
Why Ellery ADU Studio Is Wellington’s Preferred New Detached ADU Company
We’re a design-build studio, not a contractor who subs out the drawings to someone you’ll never meet. Since 2015, Ellery ADU Studio has designed, permitted, and built more than 900 ADUs, every one with a written price before work started and a documented photo record when work was complete. That matters in Wellington because a detached ADU here is not a backyard shed. It’s a structure that has to satisfy the Florida Building Code, the village’s equestrian aesthetic standards, and often a private HOA covenant at the same time.
Led by Nadia Ellery, we run every Wellington project through The Haven Standard, which puts the price in writing before work begins, requires a documented photo record on every visit, and backs the finished build with a 365-Day Done Right Promise. If the ADU isn’t built to the permitted drawings, we make it right. That promise is in writing before the project starts, not implied, not verbal. Dispatch and scheduling are coordinated from our South FL office; crews serve Wellington locally, and a live person answers calls 24/7. No voicemail queue, no callback that never comes.
Wellington homeowners have a specific research habit: they want to know what the Architectural Review Board will block before they fall in love with a design. We encourage that. Bring us a written estimate from any other builder and we’ll give you a Free Second Opinion on it, line by line.
Our New Detached ADU Services in Wellington

Custom Built ADU
A custom built ADU on a Wellington equestrian property usually runs $260,000 to $380,000. These are stick-built or panelized structures designed around your specific lot: setbacks from existing barns, paddock access, septic or well locations, and the finished floor elevation your site needs. The design phase is where Wellington’s review reality hits hardest. We file the ARB submittal with materials and colors in the palette the board has historically approved, and we schedule the build around their calendar, not the other way around.
Studio ADU
Studio ADUs in Wellington typically run $220,000 to $280,000. These are the most common first step for homeowners who want a permitted rental unit or a long-term guest cottage without the footprint of a two-bedroom. On smaller lots outside the Preserve, a 450 to 600 square foot studio can often fit within existing impervious surface budgets. On gated lots with strict HOA covenants, the studio footprint keeps things simpler at both the village and the association level.
1-Bed & 2-Bed ADU
One-bed and two-bed detached ADUs in Wellington run $240,000 to $360,000 depending on square footage, impact-rated window count, and site prep. In the Equestrian Preserve, the two-bedroom is the go-to for groom’s quarters and caretaker cottages, because the people living on the property need an actual bedroom and a functional kitchen, not a studio disguised as living space. We’ve designed these for stable managers, assistant trainers, and aging parents, each with a different site constraint.
Prefab ADU Installation
Prefab ADU installation in Wellington runs $180,000 to $300,000 including foundation, utility connections, and the permit set. We specify and coordinate systems from Cover, Dvele, and Boxabl within the same single contract. Prefab is not automatically faster in Wellington, though. The factory builds the module while we handle the site work, but the Architectural Review Board still reviews the exterior materials and colors the same way they would for a stick-built structure. The factory timeline means nothing if the board kicks back your siding color.
What happens when you call
- 1
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 Wellington
We specify and coordinate prefab and modular systems from Cover, Dvele, and Boxabl for Wellington ADU projects. Each brand has a different sweet spot: Cover’s panelized system works well on tight gated lots, Dvele’s high-performance enclosed modules suit the hurricane-wind requirements of Palm Beach County, and Boxabl’s folding modules can fit sites where crane access is constrained. The brand is one line item in the permit set. The site plan, the elevations, the energy calcs, and the ARB submittal are all on us. One contract, one written price, one team accountable for the whole thing.
Common New Detached ADU Problems We See in Wellington Homes

- ARB rejection on the first submittal. Wellington’s Architectural Review Board enforces an equestrian aesthetic, and exterior colors or materials that read as too modern or too ranch-house get bounced. A rejection means a resubmission, which can add four to six weeks before you even get to plan review.
- Impervious surface cap already exhausted. On Equestrian Preserve lots, a barn, circular driveway, arena footing, and existing patio can consume the maximum lot coverage before anyone draws a single ADU wall. The land looks wide open, but the coverage budget is gone, and a variance becomes the only path forward.
- HOA approval filed after the village permit. Wellington’s gated subdivisions have private covenants that run parallel to village zoning. Filing for a village building permit without first getting the HOA’s written approval kills the permit at plan review and sends the owner back to square one.
- Finished floor elevation missed on the first site plan. Wellington’s wet season drops 30+ inches of rain on flat, poorly draining terrain, and the village enforces finished floor elevation strictly. If the slab height is wrong on the initial drawings, the re-engineering happens after plans are already approved, and that’s an unbudgeted cost with a schedule hit.
Pricing for New Detached ADU in Wellington, FL
| Service | Wellington Price Range |
|---|---|
| Custom Built ADU | $260,000 - $380,000 |
| Prefab ADU Installation | $180,000 - $300,000 |
| Studio ADU | $220,000 - $280,000 |
| 1-Bed & 2-Bed ADU | $240,000 - $360,000 |
Every one of these numbers comes with a written price before any work starts, per Haven Standard Clause 1. No change orders, no door-side upsells, no “we discovered something and it’ll be extra.” If you already have a written estimate from another builder, bring it to us for a Free Second Opinion. Call (971) 497-2402.
Wellington’s Architectural Review Reality: What Gets Approved, What Gets Bounced

This page exists to tell you what Wellington’s Architectural Review Board and Equestrian Preserve overlay will block or approve for a detached ADU, before you spend money on plans. Here is what we have learned from filing submittals in this village.
The ARB enforces a clear equestrian aesthetic. Earth tones, muted exteriors, James Hardie fiber cement siding in Wellington-approved colors, low-pitched roofs, and impact-rated windows that read residential rather than commercial. The submittal packet needs the site plan, all four elevations, the materials schedule, the color palette, and the window and door schedule with manufacturer model numbers. If your submittal shows a flat roof, a bright accent wall, or a window shape that looks out of place next to the main house, expect a bounce.
Review timing is roughly four to six weeks from submittal to decision, assuming a complete packet. A rejection adds another four to six weeks for resubmission. That is why we file the ARB submittal early and schedule the site work around the board’s calendar. On a gated equestrian street off South Shore Boulevard, our crew installed a detached two-bedroom ADU for a stable manager. We filed the Architectural Review Board submittal with James Hardie fiber cement siding in Wellington-approved earth tones and impact-rated windows, and while waiting for the board’s calendar, we pre-poured the slab to meet finished floor elevation and scheduled the framing to start the week after approval. The job moved straight through without sitting half-finished waiting on a committee. That is how we schedule every Wellington ADU.
Then there is the coverage cap. The Equestrian Preserve overlay caps impervious surface coverage per lot, so a 5-acre estate with a barn, circular driveway, and arena footing can already be at its coverage limit. The land looks wide open, but the coverage budget is gone. A detached ADU footprint, plus its own walkway and any new patio, can push the lot over the cap, and then you’re in variance territory. A variance in Wellington can stretch three to six months and cost thousands in additional fees. We run the impervious surface analysis before we draw the first wall, so you know whether a variance is coming before you commit.
We Also Serve Cities Near Wellington
Beyond Wellington, our New Detached ADU team serves Lake Worth, West Palm Beach, Palm Beach Gardens, and Boynton Beach. Each municipality runs a different review process, and we file to whichever authority governs your lot. If you’re in Wellington proper, you’re in our core area. If you’re across the line in one of those neighboring cities, same team, same written-price standard.
Serving Wellington, FL - Our Local Coverage Area

We’re based in the Wellington 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 Wellington
Does my Wellington ADU need a variance if I’m over the impervious surface cap?
Yes. If your Wellington lot is over the Equestrian Preserve’s impervious surface cap, a variance is required before the ADU permit can move forward, and it can add three to six months and thousands in fees. The cap counts every impervious square foot: the barn, the circular driveway, the arena footing, the existing patio, the new ADU footprint, and any new walkway leading to it. We run this analysis during our site evaluation, before you commit to anything, and if a variance looks likely, we’ll tell you the likely timeline and cost. Call (971) 497-2402 for a free site evaluation.
How long does the Architectural Review Board take for a detached ADU in Wellington?
A complete Architectural Review Board submittal for a detached ADU in Wellington typically takes four to six weeks to decision, assuming the packet is clean. An incomplete packet or incompatible exterior choices add another four to six weeks for resubmission. We file the ARB submittal early and schedule site work around the board’s calendar so the job doesn’t sit half-finished. Call (971) 497-2402 and we’ll walk you through what a clean submittal looks like.
Can I put a prefab ADU (like Boxabl or Mighty Buildings) on my Wellington equestrian property?
Yes, a prefab ADU from Boxabl, Cover, or Dvele can work on an equestrian property in Wellington, but it still goes through the same Architectural Review Board and Equestrian Preserve review as a stick-built structure. The exterior materials and colors have to match the village’s equestrian aesthetic, and the impervious surface calcs still apply. The factory timeline doesn’t bypass the board’s calendar. We specify and coordinate these systems within the same single contract as the site work and permit set. Call (971) 497-2402 for a written estimate that includes the full review path.
Do I need HOA approval before or after the Village of Wellington permit for an ADU?
You need HOA approval before filing for the Village of Wellington building permit. Wellington’s gated subdivisions have private covenants that run parallel to village zoning, and filing for a village permit without written HOA approval can kill the permit at plan review. We can’t file the HOA submittal for you, but we’ll prepare the plans and documents your association needs and coordinate the timing so the two tracks don’t collide.
What floor elevation do you use for a detached ADU in Wellington’s flood-prone areas?
We set the finished floor elevation to meet Wellington’s stormwater and floodplain requirements, which during the wet season are strictly enforced. Wellington sits in the South Florida coastal plain with a true wet season from June through October that dumps 30+ inches of rain on already flat terrain. The slab height has to be right on the initial drawings or the re-engineering happens after plans are approved. Our site analysis includes the finished floor elevation calc before we finalize the permit set.
Contact Ellery ADU Studio for Your Wellington Detached ADU

If you’re weighing a detached ADU on your Wellington property, get the number that matters first: a written price before any work starts. We’ll evaluate your lot, run the impervious surface analysis, check the ARB submittal path, and give you a fixed price in writing. No vague ranges after the fact, no “we’ll circle back on that.” Call (971) 497-2402 to schedule your free estimate, or bring us a written estimate from any other builder for a Free Second Opinion. A live person answers.
Written by Nadia Ellery, Owner at Ellery ADU Studio.