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 Melissa
A home addition or ADU in Melissa typically runs $45,000 to $130,000 for a room addition, and $90,000 to $220,000 for a fully permitted detached ADU with kitchen and bath. Most Melissa projects take four to nine months from first stake-out to final inspection, depending on scope, weather, and the city’s permitting calendar. We work throughout zip code 75454, and we answer our own phone at (877) 610-1318 when you’re ready to talk through what you’re planning.
We’re Barrett & Sons Construction, and we’ve been building on the Blackland Prairie long enough to know that Melissa clay doesn’t forgive shortcuts. When you call, you get Tom Barrett or one of his sons, not a call center. We’ll meet you at your lot on Melissa Road or wherever you are, walk the property, and give you a straight answer about what your addition or ADU will realistically cost.
Why Barrett & Sons Construction Is Melissa’s Preferred Home Additions & ADU Company
Melissa is one of the fastest-growing cities in Texas by percentage. A town that held fewer than 2,000 people fifteen years ago is now a booming Collin County suburb, and the construction here is overwhelmingly new-build residential on land that was farm field a season ago. That changes how we approach every job. We’re not just framing walls. We’re working around post-tensioned slabs, under-engineered lot drainage, and clay that shifts inches between a wet spring and a dry August. Home Additions & ADU in Melissa means something specific to us, and that specificity is what keeps our jobs on schedule.
Tom Barrett puts his name, his address, and his license number on every contract, plain as day. Look it up before you sign anything. The permit inspector works for you, not for me, and that’s why I like him. Every addition and ADU we build in Melissa gets permits pulled and inspections signed, on the record, the way the code intended. And every price change, from a framing lumber adjustment to a plumbing rough-in change, arrives as a written change order before work proceeds. An allowance that isn’t on paper is a surprise waiting for a date.
Our Home Additions & ADU Services in Melissa
ADU Design & Permitting
The City of Melissa adopted its current ADU ordinance in the wake of the city’s rapid platting boom, and the code is written for a city still actively developing raw sections. Lot coverage, setbacks, and utility capacity requirements are stricter than what you’d find in older DFW suburbs, because Melissa’s drainage and utility infrastructure are still catching up to its growth. We handle the design work, the engineering, and the full permit package, including the structural review your site will need if your addition ties into an existing post-tensioned slab.
Garage Conversion ADU
Garage conversions in Melissa run $30,000 to $80,000, and they’re the fastest way to add a rental unit or a mother-in-law suite to a tract home. We reroute the garage slab drainage, insulate the wall that now becomes your living space, and upgrade the electrical panel to carry the new load. Melissa’s 2010s and 2020s tract homes were not built with ADU-ready panels by default, so we plan for that from the first walkthrough.
New Detached ADU
A detached ADU in Melissa runs $90,000 to $220,000, and on the Blackland Prairie, the foundation is the thing you don’t skip. We engineer every detached structure for expansive clay movement, which means deeper piers, proper moisture barriers, and slab design that won’t crack when the ground beneath it decides to breathe. We also plan the utility trench and the swale from day one, because in Melissa’s newer subdivisions, water tends to sheet across multiple lots toward the back fence line.
Junior ADU & Interior Conversion
A junior ADU, sometimes called a JADU, is an interior conversion, typically a bedroom or bonus room with its own entrance and kitchenette. These run $45,000 to $100,000 in Melissa depending on whether you’re adding plumbing for a full bath or working with existing rough-ins. We look at your existing floor plan, your lot access, and your HOA’s specific language. Many Melissa HOAs, especially in the newer Lennar and D.R. Horton subdivisions along Highway 5, have their own ADU restrictions that sit on top of city code.
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 Melissa
We stock and install Simonton and Ply Gem windows on ADU and addition projects, and we use them for a reason. Melissa’s summer sun is relentless, and the winter freeze events, like February 2021, put exterior envelope materials through cycles that cheap windows can’t survive. We also specify PGT impact-rated glass when a client wants the extra protection on an exposed west-facing ADU wall. These are brands you can look up, read the specs on, and verify, not mystery product off a van. Our Home Additions & ADU team keeps local inventory moving through our Dallas-Fort Worth yard so your Melissa project isn’t waiting on a shipment from somewhere else.
Common Home Additions & ADU Problems We See in Melissa Homes
- Clay heave fracturing new slab ties. When you tie an addition onto a post-tensioned tract slab, the new foundation moves at a different rate than the original. We see hairline fractures at the joint line within two to three years on additions that weren’t engineered for the Blackland Prairie’s shrink-swell cycle.
- Lot drainage that sends water straight under the new structure. Many of Melissa’s newer subdivisions were platted on former farm fields with minimal legacy drainage. A new addition or ADU changes the finish grade, and if the swale isn’t re-cut correctly, water pools under the slab edge and migrates into the framing.
- Undersized HVAC runs for the added square footage. We see additions in Melissa with a repurposed existing unit and a single flex duct to the new room. In August, that room runs 10 to 15 degrees hotter than the rest of the house. We size the system for the load, not for what’s already hanging in the attic.
- Utility trench conflicts on raw lots. Melissa is still actively platting new sections, which means crews here are as likely to be working on lots without curbs or full utility stubs as on finished streets. We call in locates, we locate for ourselves, and we don’t trench blind.
Pricing for Home Additions & ADU in Melissa, TX
We also handle the interior work that often accompanies an addition. If you’re expanding the kitchen as part of a room addition, our Kitchen Remodeling in Melissa crew handles the cabinets, counters, and backsplash. And if the addition includes a new primary suite, our Bathroom Remodeling in Melissa team builds the walk-in shower and vanity exactly to your spec.
We Also Serve Cities Near Melissa
Our crews work the Melissa area daily, but we also regularly take on additions and ADU projects in Anna, Fairview, McKinney, and Princeton. Each of those cities has its own permit quirks and its own soil profile, and we’ve pulled permits in all of them. If you’re just outside the 75454 line, give us a call and we’ll tell you straight whether your site is in our service area.
Serving Melissa, TX - Our Local Coverage Area
We’re based in the Melissa 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 Melissa
How much does a home addition cost in Melissa, TX?
A home addition in Melissa typically runs $45,000 to $130,000 depending on foundation engineering, square footage, and interior finishes. The Blackland Prairie clay under most Melissa lots means your structural budget will be higher than in sandier parts of Texas, but the range above reflects what we’ve actually quoted and built here. Call (877) 610-1318 for a written, line-item estimate for your specific lot and scope.
Can you build an ADU the same way you’d build a room addition in Melissa?
No. An ADU has its own code chapter, its own utility requirements, and its own HOA considerations in Melissa. It’s a separate structure with a separate use classification, not just a big bedroom tacked onto the house. We’ll walk you through both paths and tell you which one makes sense for your lot and your budget, then put the recommendation in writing.
Do you pull permits for home additions and ADUs in Melissa?
Yes, on every eligible job, and we don’t ask you to sign anything that says otherwise. The permit inspector works for you, not for me. That’s why I like him. Melissa’s permitting office knows our work, our crew’s names, and our license number, and we’d rather keep it that way than skip a step to save a week.
Will the price change once the addition or ADU work starts in Melissa?
Only if you approve a written change order first. If you add square footage, upgrade a finish, or we hit something unexpected under the slab, you get a line-item change order on paper before a single nail moves. No surprise invoices at the end. An allowance that isn’t on paper is a surprise waiting for a date. That’s our standing rule on every Melissa job.
How long does a home addition or ADU take in Melissa?
Most projects in Melissa run four to nine months depending on the scope, the weather, and the city’s current permit queue. Attached room additions trend faster; detached ADUs with full utility trenching trend longer. We’ll give you a schedule at contract signing, and we update you in writing when weather or inspection timing shifts the dates.
Talk to Tom Barrett About Your Melissa Addition or ADU
If you’re thinking about adding square footage to your Melissa home, or building an ADU on a lot that’s been waiting for the right plan, call (877) 610-1318. Tom Barrett or one of his sons will answer. We’ll talk about your lot, your budget, your HOA, and what’s actually feasible on the Blackland Prairie. Then we’ll put it all in writing. Free estimates, line-item pricing, permits pulled, inspections signed, and a 90-Day Done Right Promise on every contract. Ask anyone on your street, or look up the license number yourself.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Melissa and the surrounding Collin County communities.