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 Anna
Home additions and ADU construction in Anna, TX typically runs $45,000 to $130,000 for room additions, and $90,000 to $220,000 for a new detached ADU. Most projects take 3 to 6 months from permit to final inspection, and the single biggest variable in Anna is whether your plans are submitted before or after the city’s permit queue backs up. Barrett & Sons Construction works steadily across Anna’s 75409 zip code, and we’ve learned that in this market the contractor who pulls permits early is the one who finishes on time. Call (877) 610-1318 for a free estimate on your addition or ADU.
Why Barrett & Sons Construction Is Anna’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews that show up in Anna. That matters because when you hire us for a room addition off FM 455 or a garage conversion in a neighborhood like West Crossing, the person who walks your property is the same person whose name is on the truck. We do not sub out the work to strangers, and we do not hand you a bill at the end that looks nothing like the quote.
Anna homeowners tell us the same story again and again: a national outfit quoted low over the phone, then the change orders started after demo day. Our fix is simple and it sits on every contract. Every scope change, every allowance adjustment, every surprise discovered inside a wall arrives as a written change order before work proceeds. If it is not on paper, it does not happen. That is the Barrett & Sons way, and it is why homeowners in Anna keep our number in their phones.
We also know this specific market. When you work in Anna, you work with the city’s permit office, and right now the US-75 growth corridor has stretched inspection scheduling thin. We submit permit applications as soon as drawings allow, sometimes before every finish detail is locked, because the one thing you cannot buy back in Anna is lost time waiting on a permit number.
Our Home Additions & ADU Services in Anna
ADU Design & Permitting
Building a detached ADU in Anna means navigating Collin County’s development rules and the city’s own permitting timeline. We handle the design work, the engineering, and the permit package, then we manage the inspection schedule from first dig to final sign-off. In Anna, we submit permits early because we’ve sat through the same inspection bottlenecks every local contractor knows about.
Garage Conversion ADU
Garage conversions are the most cost-effective path to an ADU in Anna, typically running $30,000 to $80,000. Most Anna garages sit on the same post-tension slab as the house, which is good news: it means the foundation work is often minimal if we keep the conversion within the existing footprint. We handle the full conversion, including the insulation, drywall, electrical, and plumbing rough-ins that turn a two-car garage into a rentable unit.
New Detached ADU
A new detached ADU in Anna runs $90,000 to $220,000 depending on size and finish level. This is where Anna’s Blackland Prairie soil becomes the central topic, because every new structure needs its own engineered foundation. We do not pour a driveway-thickness slab and hope for the best. We spec post-tension slabs or pier systems sized for expansive clay, because we’ve seen what Anna’s summer dry cracks and spring wet heave do to shortcuts.
Junior ADU & Interior Conversion
A junior ADU, typically a converted bedroom with a kitchenette and its own entrance, falls on the lower end of our $45,000 to $130,000 addition range. These projects work well in Anna’s newer tract homes, where open floor plans can be partitioned cleanly and the existing post-tension slab usually needs no additional foundation work. We handle the permit, the plumbing, the electrical subpanel, and every inspection that follows.
For homeowners weighing a larger footprint, our Home Additions & ADU team handles full second-story additions and room extensions across Anna, Melissa, and Celina. And when we’re already in your home, many Anna clients ask us to handle Kitchen Remodeling in Anna or a Bathroom Remodeling in Anna at the same time, which saves a second round of permitting.
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 Anna
When we frame an addition or ADU in Anna, we install materials you can look up, not mystery products off a van. For windows and exterior doors on Anna additions, we regularly use Simonton and Ply Gem, both known for holding up through the hail-heavy spring season that rolls through Collin County. For impact-rated openings on ADU entrances, PGT products show up often on our Anna jobs. Because our scheduling is coordinated from the brand’s Dallas-Fort Worth office, parts and materials arrive in Anna without the multi-week waits we hear about from smaller shops.
Common Home Additions & ADU Problems We See in Anna Homes
- Expansive clay movement under new foundations. Anna sits on the Blackland Prairie, and the black clay under your home swells in wet springs and contracts hard in August. Every addition we build here starts with a foundation plan that accounts for that movement, or you’ll be chasing drywall cracks within two years.
- Permit delays on the US-75 corridor. Anna’s growth has outpaced its inspection capacity in stretches. We’ve seen projects lose six weeks waiting on a permit number, which is exactly why we file as early as possible and keep your project moving while the city catches up.
- Builder warranty complications on post-2015 homes. Nearly all of Anna’s housing stock was built after 2015, which means many additions touch homes still under builder warranty. Cutting into a wall or slab without documenting the work can void that warranty, so we photograph everything and note original conditions in writing before opening anything.
- Hail damage to new exterior envelopes. Anna sits in a spring hail corridor, and a poorly flashed addition or ADU roof will show it after the first big storm. We install exterior cladding and roofing to withstand Collin County hail, not just to pass a visual inspection.
Pricing for Home Additions & ADU in Anna, TX
Room additions in Anna run $45,000 to $130,000. A new detached ADU lands between $90,000 and $220,000, while a garage conversion ADU comes in at $30,000 to $80,000. What moves your number: foundation engineering for Anna’s expansive clay, whether your addition ties into existing systems or needs new electrical subpanels and HVAC runs, and the finish level you choose. Every estimate from Barrett & Sons comes as a written, line-item scope. If anything changes down the line, you get a written change order before work proceeds, not a surprise on the final invoice. Call (877) 610-1318 to schedule your free estimate.
We Also Serve Cities Near Anna
Beyond our work across Anna, we take the same permitting discipline and foundation know-how into Melissa, Fairview, McKinney, and Celina. If you live just outside Anna and want a contractor who already knows the Collin County inspection process, you can read more about how we approach every Home Additions & ADU in Anna job and apply that same standard to yours.
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
Once you approve a written scope, we can typically break ground within 4 to 8 weeks, with permit filing happening in the first two weeks. The biggest variable in Anna is the city’s inspection queue, which is why we submit permits before every finish detail is even finalized. One call to (877) 610-1318 gets you on our Anna schedule.
Yes, we work throughout the 75409 zip code, including master-planned communities like West Crossing, the neighborhoods along FM 455, and the newer tract subdivisions off the US-75 corridor. Anna’s housing stock is almost entirely post-2015 construction, and we know that inventory well.
A detached ADU in Anna runs $90,000 to $220,000, which is on par with McKinney and Melissa, because the labor pool and permitting costs across northern Collin County are similar. What differs is timing, and Anna’s inspection schedule can be tighter than Melissa’s on any given month. For an exact range tailored to your lot, call (877) 610-1318.
No, unless you change the scope or we open a wall and find something no one could have predicted. If that happens, Barrett & Sons issues a written change order with the new price before any additional work is done. You will never see a surprise invoice at the end of a Barrett & Sons job, because the allowance that isn’t on paper is a surprise waiting for a date.
Every Barrett & Sons job comes with the written 90-Day Done Right Promise: if something isn’t done right, Tom Barrett comes back and makes it right, one call. Beyond that, all permitted work carries the inspections and sign-offs required by the city of Anna. Call (877) 610-1318 to talk through your project, and the estimate is free.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Anna and the surrounding Collin County communities.