Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Wellington
Home additions and ADU construction in Wellington typically runs $45,000-$130,000 depending on scope, with detached ADUs landing between $90,000 and $220,000. The single biggest cost driver here isn’t square footage; it’s the wind-load engineering required to tie new construction into Palm Beach County code on CBS block homes. Call (877) 610-1318 and Tom Barrett or one of his sons will walk the site with you, put the scope in writing, and price it so you know exactly what you’re paying for before the first block is set.
Why Barrett & Sons Construction Is Wellington’s Preferred Home Additions & ADU Company
We’re an owner-operated company founded in 1998, and when we say owner-operated, we mean it. Tom Barrett’s name is on the truck, his sons run the crews, and a live person answers the phone 24/7. No call center, no out-of-state dispatch. Wellington homeowners call us because they’ve already been burned by a national outfit that quoted one number on the phone and handed them a different bill at the door. That doesn’t happen with us. Every price change arrives as a written change order before work proceeds, and every eligible job gets permits pulled and inspections signed.
We know Wellington’s housing stock. The village is almost entirely planned CBS construction from the 1980s through early 2000s, which means slab-on-grade block homes now hitting their first major renovation cycles. Tying a new addition or ADU into those existing block walls isn’t the same job as framing onto a wood house in Lake Worth or Greenacres City. It takes a crew that understands Palm Beach County’s 170+ mph wind-load requirements and the accessory-structure permitting track that equestrian-zoned parcels require. We do that work here, and we’ve done it for years.
Our Home Additions & ADU team works locally. Dispatch and scheduling are coordinated from our South Florida office, but the crews serving Wellington live and work in the western communities. You’ll see the same faces from estimate to final inspection.
Our Home Additions & ADU Services in Wellington
ADU Design & Permitting
Before you build an ADU in Wellington, the paperwork has to be right, and on equestrian-zoned parcels it has to be filed correctly the first time. Contractors who don’t know Palm Beach County’s accessory-structure track file an ADU as a standard residential permit and get hit with a stop-work order. We file it right from day one, we pull the permits, and we get the inspections signed. For a detached ADU on a Wellington equestrian parcel, that means separate permitting for the accessory structure, which includes its own site plan and wind-load engineering.
Garage Conversion ADU
A garage conversion in Wellington runs $30,000-$80,000 and is often the most cost-effective way to add a rentable or family unit. The key here is the existing CBS garage shell. It’s already block construction, already on your slab, and usually already tied to your electrical panel. But converting it to living space still requires a change of use permit, impact-rated windows if you’re cutting new openings, and insulation work that satisfies Florida energy code. We spec all of it in writing before we start.
New Detached ADU
Detached ADUs in Wellington run $90,000-$220,000, and the range reflects what we see on the ground: a simple one-bedroom unit sits at the low end, while a larger unit with a full kitchen, bath, and separate utility connection pushes toward the top. On Wellington lots with high water tables, the footer work is a groundwater management job, not a simple dig. We plan for that from the first site visit, and we put the dewatering and compaction work in the written estimate so you’re not surprised by it later.
Junior ADU & Interior Conversion
For homeowners who want to add a rental unit or an in-law suite without changing the footprint of the house, a junior ADU or interior conversion is often the right move. In Wellington, that usually means converting a portion of an existing two-story CBS home into a self-contained unit with its own entrance. We’ve done this on homes throughout the village, and the work always includes the same rigor we apply to a full addition: engineered plans, permitted construction, and inspections signed before we hand you the keys.
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 Wellington
We install materials you can look up, not mystery brands off a van. On Wellington additions and ADUs, we regularly spec PGT impact-rated windows and doors, which are built in Florida and engineered for the 170+ mph wind zone Palm Beach County enforces. We also carry Simonton and CGI product lines for window and door packages. When your Wellington ADU or addition needs impact-rated openings, we can get them ordered, delivered, and installed without making you wait on a supply chain that doesn’t know the difference between a Wellington equestrian parcel and a cookie-cutter subdivision.
Common Home Additions & ADU Problems We See in Wellington Homes
- Missing wind-load engineering on the CBS tie-in. Cheap quotes treat a block-wall addition like a standard wood-frame job. In Wellington, Florida Building Code requires engineered roof-to-wall strapping and a load path that can withstand 170+ mph winds. Skip that, and the inspector will flag it; worse, your insurance carrier may deny a claim later because the work wasn’t built to code.
- Wrong permit track on equestrian parcels. Wellington has a significant number of equestrian-zoned parcels where detached accessory structures fall under a separate Palm Beach County permitting track. Filing them as standard residential work gets a stop-work order, and it can cost you weeks in delays.
- February construction conflicts with the Winter Equestrian Festival. Starting a major addition or ADU in February means staging equipment, dumpsters, and noise next to a client’s competition arena. We front-load roofing, framing, and disruptive work into the May-November off-season so you’re not paying for a change order to pause work until the season ends.
- Ignoring the water table on footer and foundation work. Wellington sits on former Everglades flatlands, and the water table runs 18-24 inches below grade in most of the village. That turns simple footer digs into groundwater management problems. We plan for dewatering and compaction from the first site visit, and it’s included in our written estimate.
Pricing for Home Additions & ADU in Wellington, FL
Here’s what we see in Wellington’s market right now. A room addition runs $45,000-$130,000. A full detached ADU runs $90,000-$220,000. A garage conversion runs $30,000-$80,000. What moves the number within those ranges: whether you’re tying into an existing CBS wall or building fully detached, whether the parcel is equestrian-zoned and needs the accessory-structure permit track, whether you need impact-rated windows and doors, and whether the footer work requires dewatering. No change order surprises. The allowance that isn’t on paper is a surprise waiting for a date, and we don’t do that.
| Service | Wellington Price Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
Every estimate is free. Every scope item is written. Call (877) 610-1318 and we’ll walk the site, measure, and give you a line-item quote you can take to your insurance agent or your lender.
We Also Serve Cities Near Wellington
If you live in Wellington or an adjacent community, we can help. We also serve Royal Palm Beach, Greenacres City, Lake Worth, and Lake Worth Corridor. Same owner-operated crew, same written change orders, same 90-Day Done Right Promise on every job.
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 - Home Additions & ADU in Wellington
Yes. Palm Beach County enforces the 170+ mph design wind-speed requirement on all new construction and significant renovations, including additions and ADUs. That means engineered roof-to-wall strapping, impact-rated openings, and a documented load path from the roof to the foundation. A compliant quote includes the engineering, the specified materials, and the inspection sign-off. A cheap quote leaves those line items out and hopes the inspector doesn’t notice. Call (877) 610-1318 and we’ll show you the difference in writing.
Wellington sits on former Everglades flatlands, and the water table runs 18-24 inches below grade in most of the village. That turns any below-grade work into a groundwater management job. Our estimates include dewatering, soil compaction, and any additional footer engineering required to keep the foundation stable over time. If your quote doesn’t mention the water table, the contractor hasn’t done the homework.
Yes, attached garage conversions are typically permitted on Wellington equestrian-zoned parcels, but the permit has to go through the right track. The structure is already part of the main residence, so it’s not a separate accessory structure, but it still requires a change of use permit, impact-rated windows if you’re cutting new openings, and a compliance review with current energy and wind-load codes. We file it correctly the first time so you don’t get a stop-work order. Call (877) 610-1318 for a free site assessment.
It can. A permitted and inspected ADU with documented wind-load compliance gives your insurer proof the structure was built to current code, which can reduce your premium compared to an unpermitted or partially documented conversion. The key is the paper trail: permits pulled, inspections signed, engineering stamps on file. We provide all of that on every job, and we keep it organized so you can hand it to your agent.
Schedule it for May through November. Wellington’s Winter Equestrian Festival runs January through April, and that’s when the village fills with horse owners who don’t want dumpsters, staging equipment, or construction noise near their arenas. Starting major work in February almost guarantees a change order to pause until May. We front-load disruptive work into the off-season so you avoid the conflict and keep your neighbors happy. Call (877) 610-1318 to get your project on the calendar before the off-season fills up.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Wellington, FL since 1998.