Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterFast, Reliable Home Additions & ADU Across Anna
Adding square footage or building an ADU on your property in Anna, TX typically costs $45,000 to $130,000 for a home addition and $90,000 to $220,000 for a detached ADU. Most projects in the 75409 zip code go from first conversation to finished framing within four to six months, though Anna’s permitting backlog can stretch that if paperwork waits. We’re Barrett & Sons Construction, owner-operated since 1998, and Tom Barrett’s crew has been working Anna’s Blackland Prairie soils long enough to know exactly what a slab here needs before the plans land on the city desk. We also handle our Roofing in Anna when your project needs it. Call (877) 610-1318 and we’ll walk your lot together.
Why Barrett & Sons Construction Is Anna’s Preferred Home Additions & ADU Company
Anna homeowners keep calling us back because the name on the truck is the name on the contract. Tom Barrett founded this company in 1998, and his sons run the crews that show up in Anna. That matters when your addition is tied to a post-tension slab and you want the person who poured it to be the person who signs off on it. We’re not a franchise dispatching strangers from out of state. Every crew member carries the Barrett & Sons name, wears a uniform, and passes a background check before setting foot on your property.
Anna’s growth has attracted plenty of out-of-town contractors chasing quick jobs along the US-75 corridor. Homeowners here have told us stories about prices that changed at the door and permits that were “optional.” We do the opposite. Every scope, every allowance, every change order for an Home Additions & ADU project lands in writing before a nail moves. And we’ve been doing it that way for over 29 years, long enough that a good share of our Anna work now comes from neighbors who watched us build down the street.
When you call, a live person answers. Not a voicemail box. Not a call center. That includes Saturday mornings when you’re standing in your kitchen wondering if the wall can come down. We answer, we talk, we schedule a free estimate. No trip charge inside Collin County. That’s the Barrett way, and it’s held up just fine in Anna.
Our Home Additions & ADU Services in Anna
ADU Design & Permitting
Anna sits in Collin County, and like a lot of fast-growing Texas cities, its permitting office has been stretched thin by the volume of new construction. The single biggest scheduling risk for an ADU in Anna is waiting too long to file. We pull permits early, often before full plans are finalized, because we know how the city’s review queue moves. For a 700-square-foot detached unit with a kitchenette and full bath, budgets in Anna typically land between $120,000 and $180,000 depending on finishes and site prep.
Garage Conversion ADU
Most Anna homes are wood-frame with brick veneer, built after 2015. That’s actually good news for a garage conversion, because the shell is young and the slab under it is post-tension concrete. Converting an attached two-car garage in Anna runs $30,000 to $80,000, and the job usually moves faster than a detached build since the framing and roof already exist. We pay close attention to the black clay around the foundation, because cutting into a slab here without a moisture plan can invite movement you’ll feel for years.
New Detached ADU
Building a detached ADU in Anna means starting with the dirt, and Anna’s dirt is expansive black clay that heaves in spring and cracks in summer. Every detached unit we build sits on an engineered foundation designed for that movement. A new 800-square-foot ADU with a full bathroom, small kitchen, and separate entrance in Anna runs $130,000 to $220,000. The range mostly comes down to finish level, utility trenching depth, and how far the unit sits from the main panel.
Junior ADU & Interior Conversion
Not every family in Anna needs a full second kitchen. A junior ADU, which is a converted bedroom or bonus room with a private entrance and efficiency kitchen, often lands between $45,000 and $90,000. We see these most often in Anna’s newer subdivisions off FM 455 and near Hurricane Creek, where families want aging parents close but not sharing a hallway. If the scope feels more like a Bathroom Remodeling in Anna project with a kitchenette attached, we’ll tell you that before we quote it.
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.
Trusted Brands We Service in Anna
When we install Windows & Doors - Anna or exterior cladding on an Anna addition, we carry brands you can look up by name. On recent projects around town we’ve installed Simonton windows, Ply Gem siding and trim, and PGT impact-rated products where hail risk calls for it. Hail is a real thing in this stretch of Collin County, and spring storms here are why we don’t put mystery-brand windows on the side of a house that’s going to face them. Parts for these brands are stocked locally, which keeps turnaround tight when a window arrives cracked or a storm delays a shipment. We match the product to the Anna climate, not to whatever is cheap on the shelf.
Common Home Additions & ADU Problems We See in Anna Homes
- Slab movement from expansive black clay. Anna sits on Blackland Prairie soil that swells with spring rain and shrinks in summer drought. A new addition tied to an existing slab without an engineered joint or moisture plan will crack within two seasons. We see this every year on homes that were added onto by builders who didn’t know the soil.
- Permit bottlenecks slowing projects down. Anna’s building department has struggled to keep pace with the city’s growth. Filing plans early is the difference between a four-month project and an eight-month project. We start the permit process while design details are still being finalized.
- Builder-warranty defect work on young homes. Most Anna homes were built after 2015, and a good share of them are still inside their original builder warranty windows. When cracks appear in drywall or doors stop latching, we often find it’s a symptom of slab settlement on black clay, not shoddy framing. We document what we find in writing, which helps if you’re still chasing the original builder.
- Storm damage during construction. Large spring hailstorms are common in Anna’s corridor along US-75. A half-framed addition with a tarped roof is vulnerable. We schedule roofing and exterior cladding work around weather windows and use temporary protection that actually holds up to a Collin County downpour.
Pricing for Home Additions & ADU in Anna, TX
A home addition in Anna typically runs $45,000 to $130,000. Detached ADUs run higher, between $90,000 and $220,000, because you’re building an entire second structure with its own foundation, utilities, and roof. Garage conversions fall between $30,000 and $80,000. What moves the needle most in Anna: soil testing and pier depth for the foundation, how far utility trenches have to run from the main house, and the finish level on kitchens and bathrooms. A Kitchen Remodeling in Anna project inside the addition adds $14,000 to $45,000 on its own. We give free estimates, in writing, with no trip charge inside the county. Call (877) 610-1318 and we’ll put real numbers on your project.
We Also Serve Cities Near Anna
Our crews work throughout Anna and the surrounding Collin County towns. You’ll find us on jobs in Melissa, Fairview, McKinney, and Celina, often several times a week. If you’re a few miles outside Anna proper, we still come out. Same written change orders, same permit policy, same Tom Barrett answer-the-phone rule from the day we show up to the day we finish.
Serving Anna, TX - Our Local Coverage Area
We’re based in the Anna 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 Anna
Most Anna additions break ground within three to five weeks of the signed contract, depending on the city’s permit queue. We file permits early because Anna’s building department handles a heavy new-construction load, and that early filing is what keeps your project on schedule. Call (877) 610-1318 for a start date on your specific scope.
Yes. We work in the newer master-planned communities along FM 455, near Hurricane Creek, and throughout the 75409 zip code. Anna’s subdivisions have all been built since about 2015, and we know the slab and framing conventions in each of them.
Anna’s expansive black clay means every detached ADU needs an engineered foundation, and that engineering and pier work adds cost compared to areas with more stable soil. You’ll see it in the $90,000 to $220,000 range here. Skipping that step is how you end up with cracks in year two, and we won’t do it.
Not without your signature on a written change order first. If site conditions reveal something unexpected, we document it, price it, and get your approval before any additional work happens. That’s been the Barrett & Sons rule since 1998, and it’s written on every contract.
Every Barrett & Sons project carries the 90-Day Done Right Promise. If something isn’t done right, Tom Barrett comes back and makes it right, one call. Material warranties from brands like Simonton and Ply Gem extend beyond that, and we register those for you so they’re easy to claim down the road.
Get Your Free Anna Home Addition or ADU Estimate
If you’re in Anna and thinking about adding a room, converting a garage, or building an ADU for family or rental income, let’s walk the property and talk numbers. We’ll give you a written scope, a fixed price, and a schedule built around Anna’s permit realities. Estimates are free, and there’s no trip charge inside Collin County. Call (877) 610-1318 and ask for Tom or one of his sons. You’ll get a straight answer.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Anna since 1998.