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 Bacliff
Most Bacliff homeowners we sit down with are trying to answer the same question: can I add square footage to my place without opening a can of worms with Galveston County and FEMA? The short answer is yes, but it has to be done right from the foundation up. A home addition in Bacliff typically runs $45,000 to $130,000, and a new detached ADU generally falls between $90,000 and $220,000 depending on whether you’re building on pilings or a slab, how high the county requires you to go, and what’s already on your lot. If you’re thinking about it, call Tom and the crew at (877) 610-1318. We’ll come out, walk the property with you, and give you a straight answer before you spend a dime.
We’ve worked all over the 77518 zip code, from the older streets off Bayshore Drive down to the newer builds closer to FM 646. What we’ve learned is that Bacliff isn’t like building in League City or Webster. You don’t pull permits at a city hall here because there isn’t one. You deal with Galveston County directly, and the county inspector cares about one thing above all else: whether your structure sits high enough above the water. That changes how we frame, how we foundation, and how we price. It also means the contractor you hire had better know the difference before the first load of lumber shows up.
Why Barrett & Sons Construction Is Bacliff’s Preferred Home Additions & ADU Company
Tom Barrett started Barrett & Sons Construction in 1998, and he’s been owner-operated the whole time. His sons run crews in Bacliff, which means the man whose name is on the truck is the same man who will walk your property line and answer your questions. That matters when you’re spending six figures on an addition or an ADU. You shouldn’t have to call an 800 number and talk to someone in another state who’s never seen a pier-and-beam foundation in their life.
Around Bacliff, our reputation is built on a few things people tend to repeat at the hardware store. We pull permits on every eligible job. We inspect and sign on every eligible job. Every change order goes in writing before it touches the job, so the number we agree on is the number you pay. And every job carries our 90-Day Done Right Promise. If something’s not right, Tom comes back. One call. That’s it. You can also look up his name, address, and license number before you ever sign. We’d rather you verify us than take our word for it.
When you call (877) 610-1318, a live person answers. Not a voicemail box, not an out-of-state call center. If it’s after hours, you still get a human. And since our scheduling runs through our Houston office, we can get a crew to Bacliff quickly when you’re ready to talk. We’ve done enough work on Galveston Bay to know what the salt air does to metal connectors and what the county will flag on a foundation inspection.
We also keep our Home Additions & ADU work under one roof. Design, permitting, foundation, framing, roofing, finishing. You’re not coordinating five different subcontractors who’ve never met each other. The crew that shows up in Bacliff is the crew that will be there until the final walkthrough, and you’ll recognize them at the grocery store after the job is done.
Our Home Additions & ADU Services in Bacliff
ADU Design & Permitting
An ADU in Bacliff starts before the drawings, because the drawings have to answer to Galveston County and FEMA. We handle the design work with the flood elevation requirements baked in from day one, not tacked on after a permit gets rejected. If your lot sits in Flood Zone AE or VE, which most of Bacliff does, the county wants to see an elevation certificate and a foundation plan that meets Base Flood Elevation. We’ve walked enough projects through that office to know what gets flagged and what sails through. Getting this wrong costs weeks of delays and real money in rework. Getting it right means the permit gets issued and the inspector signs off the first time.
Garage Conversion ADU
Plenty of Bacliff homes still have the original slab-on-grade garage from before Ike, and homeowners look at it and see a rental unit or a place for aging parents. The catch is that an old at-grade slab may not meet the county’s post-Ike elevation expectations, and converting it can mean lifting the structure, installing a proper pier system, or in some cases a full teardown-rebuild. A garage conversion in Bacliff generally runs $30,000 to $80,000, and the spread depends on what the foundation inspector says. We’ll tell you the truth about what it costs before we start, not after the slab is opened up.
New Detached ADU
Building a new detached ADU on your Bacliff lot gives you the cleanest start, because you’re not fighting a legacy foundation. That said, you’re still building in a coastal flood zone, which means pilings or an elevated pier foundation, corrosion-resistant fasteners, and wind-rated framing. A new detached ADU in Bacliff typically costs $90,000 to $220,000, and the county will require the structure to sit above Base Flood Elevation. We prefer Simonton and PGT windows on these builds because they handle the salt air and wind loads better than builder-grade units, and they’re brands you can look up. This is a big investment, and you should know exactly what materials go into it before the first nail is driven.
Junior ADU & Interior Conversion
When you’re not ready to build a separate structure, a junior ADU inside the existing footprint can work. That means converting a large bedroom, a bonus room, or an enclosed patio into a self-contained living space with its own entrance, kitchenette, and bath. In Bacliff, the permitting question is usually simpler for interior work because you’re not changing the foundation elevation, but county inspectors will still want to see proper egress, fire separation, and electrical work signed off. It’s often the most cost-effective way to add an income unit or a place for family without a full ground-up build, and we’ll walk you through what’s possible in your specific house.
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 Bacliff
When we put windows and doors on a Bacliff addition or ADU, we reach for names that hold up in salt air and coastal wind. Simonton and PGT are the two we use most on the bay side, because their frames and hardware are built for exactly this environment. CGI makes a strong impact-rated line when you’re closer to the water and want the extra storm protection. These aren’t mystery brands off the back of a van. You can look up every product we install, and we’ll show you the cut sheets before we order. We keep what we can stocked and ready, and anything we don’t have locally, we get fast through our Houston yard.
Common Home Additions & ADU Problems We See in Bacliff Homes
- At-grade foundations on pre-Ike cottages. Many of the older wood-frame places in Bacliff still sit low, and as soon as you pull a permit for an addition, Galveston County wants to see an elevation certificate. That can trigger foundation rework you didn’t budget for, which is why we check this before we quote, not after.
- Salt corrosion on framing and connectors. The open bay air is relentless on metal hardware. We see rusted hurricane ties, corroded anchor bolts, and swollen sheathing on a regular basis. Any addition we build uses hot-dipped galvanized or stainless connectors rated for coastal exposure.
- Wind uplift issues on older rooflines. Bacliff sits on the open western shore of Galveston Bay, and Hurricane Ike’s storm surge topped ten feet here in 2008. Even a regular addition has to meet wind uplift requirements, which means strapping, bracing, and ties that a standard inland build wouldn’t need.
- Storm surge planning nobody warns you about. A permitted addition on an old slab house can force the question of whether the whole structure should be lifted. We’ve had county inspectors flag exactly that, and the homeowner ended up with a bigger, smarter project than they’d planned. Better to know that going in.
Pricing for Home Additions & ADU in Bacliff, TX
Honest numbers up front: a room addition or modest bump-out in Bacliff runs $45,000 to $130,000. A detached ADU starts around $90,000 and can reach $220,000 depending on size, finishes, and how high the county makes you go. A garage conversion ADU lands between $30,000 and $80,000, but that assumes the existing slab and framing pass inspection. Here’s a quick breakdown of what we see in the 77518 market:
- Room addition (single story): $45,000-$90,000
- Second story addition: $80,000-$130,000
- Garage conversion ADU: $30,000-$80,000
- New detached ADU: $90,000-$220,000
- Sunroom or enclosed patio: $35,000-$75,000
What moves the number in Bacliff more than anything is foundation work. If your lot requires pilings or a raised pier system, that’s a real cost. If we’re adding onto an existing elevated home, it’s less. The other big lever is the elevation certificate, which the county will ask for on most additions and ADUs. Our estimates are written and line-itemed. You’ll see the cost of every stage before you sign, and any change after that comes as a written change order. We don’t surprise people at the end. Call (877) 610-1318 for a free estimate, and we’ll put real numbers on your project.
We Also Serve Cities Near Bacliff
While this page is for Bacliff homeowners, our crews regularly work just up and down the bay. We’re in Dickinson, League City, Seabrook, and Webster most weeks. If your project is in one of those communities, the same crew and the same written-change-order policy apply. We also handle Kitchen Remodeling in Bacliff and Bathroom Remodeling in Bacliff when an addition project turns into a broader renovation, which is common once the county gets involved and homeowners decide to bring the whole house up to current standards while they’re at it.
Serving Bacliff, TX - Our Local Coverage Area
We’re based in the Bacliff 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 Bacliff
A home addition in Bacliff typically costs $45,000 to $130,000, with detached ADUs running $90,000 to $220,000 and garage conversions landing between $30,000 and $80,000. The biggest variable in Bacliff specifically is foundation elevation: if the county requires pilings or a raised pier system, that adds real money to the job. Call (877) 610-1318 and we’ll give you an exact line-item quote after walking your property. Estimates are free.
Yes, we pull permits directly through Galveston County for every eligible Bacliff project, since Bacliff is unincorporated and has no city building department. The county’s inspectors specifically look for compliance with post-Ike FEMA flood elevation requirements, which can affect older at-grade homes. We handle the whole permit process for you, including the elevation certificate paperwork, and we don’t start work until the permit is in hand. For more on how permitting works for Home Additions & ADU, give us a call.
Yes, but the project will almost certainly require an elevated foundation. Bacliff sits in FEMA Flood Zone AE or VE for most of its footprint, and Galveston County enforces Base Flood Elevation on new structures. We design the ADU around that requirement from the start, which saves you from a failed inspection and expensive rework. Call (877) 610-1318 to have us look at your specific lot and tell you what’s possible.
Most Bacliff additions and ADUs take four to nine months from permit pull to final inspection, with larger ground-up ADUs on pilings running toward the longer end. The county permit review and any foundation elevation work add time compared to inland projects, and we’d rather set an honest timeline than promise a date we can’t hit. We’ll put the schedule in writing with your estimate, and any change to it comes as a written change order.
Every job we do in Bacliff carries our 90-Day Done Right Promise, written on the contract, not buried in fine print. If something’s not done right, Tom Barrett comes back and makes it right with one call. That’s on top of the material warranties from the brands we install, like Simonton, PGT, and CGI. The permit inspector works for you, not for us, and we like it that way.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Bacliff and the Galveston Bay area since 1998.