Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Round Rock
If you own acreage in Round Rock or one of the newer master-planned communities nearby, you already know that building here isn’t the same as building in a city-only suburb. Williamson County permits, blackland clay, septic and well setbacks, and long hauls to supply yards all change how a project gets scoped and priced. That’s where our general contractor team comes in. We handle the county paperwork, the soil questions, and the material logistics before we ever put a number in front of you. Call (903) 623-1966 and you’ll talk to a live person who knows Round Rock, not a call tree.
We’ve worked lots here long enough to know that most acreage jobs hinge on what’s underground before what’s above ground. Slab-on-grade additions, detached ADUs, shops, and garages all start with a soil test and a frank conversation about drainage. That’s not a formality. It’s the difference between a structure that stays straight for decades and one that shows hairline cracks within two seasons. Isaac Pruett leads our crews, and he’ll tell you the same thing on the first call: we price Round Rock jobs for Round Rock conditions, not for a generic Texas suburb.
Why Mason Remodeling Co Austin Is Round Rock’s Preferred General Contractor Company
Our reputation in Round Rock comes from doing the unglamorous work first: pulling Williamson County permits correctly, walking lots with county inspectors, and writing change orders that spell out every allowance before concrete gets poured. Homeowners here have told us the same story more times than we can count. Another contractor gave them a city-grade quote, then the county came back with a septic field survey that moved their ADU 40 feet east. That should never happen. We scope acreage jobs with county rules in hand from day one.
Every crew member who steps onto your Round Rock property has been background-checked and identity-verified under the Threshold Standard. Before the visit, you get the technician’s name and photo. At the door, they show a photo ID badge and arrive in a clean, marked uniform. If you’re often home alone or have young kids, that part matters as much as the craftsmanship. Isaac Pruett has built our process around that exact concern: you should know who’s coming, see their face before they arrive, and get a written price before any work starts. No exceptions, no conditions.
Response time to Round Rock is straightforward. Dispatching is coordinated from our Austin office, but our crews serve Round Rock locally and are here regularly, not just when a job lands. That means shorter material runs, faster county inspection scheduling, and less idle time on your site.
Styles & brands we work with
General Contractor Services in Round Rock
General Contractor Services in Round Rock look different than in city-only ZIP codes. An acreage addition, detached shop, or ADU in Round Rock usually means Williamson County permits, a septic and well setback review, and a longer driveway haul for concrete, lumber, and dump equipment. We price all of that in writing before the first tool is unpacked, and we never ask you to sign a scope that ignores the county’s actual requirements. Here’s what that looks like in practice.
Acreage Additions and Detached Structures
Most of our General Contractor work in Round Rock starts with a site walk and a soil conversation. If you’re adding square footage to a home on blackland clay, we order a soil test before finalizing the slab design. Then we coordinate with Williamson County on setbacks and drainage so the addition doesn’t become a crack problem in two years. Pricing for home additions in Round Rock runs $45,000 to $130,000 depending on size, finishes, and what the county requires.
ADUs and Garage Conversions
Accessory dwelling units are the fastest-growing request we see from Round Rock acreage owners. A detached ADU runs $90,000 to $220,000, and much of that range depends on septic and well setbacks, which can move the building envelope after the initial site survey. A garage conversion is a more contained option at $30,000 to $80,000, and it usually avoids a new septic review entirely because the structure already exists. We walk you through which path makes sense before you spend a dime on design.
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.
Construction Company in Round Rock
Construction Company work in Round Rock isn’t a matter of slapping up a structure and hoping the county approves it. Williamson County enforces its own inspection schedule, and the inspectors here see a lot of sloppy work from builders who learned their trade inside Austin city limits. We work with that, not against it. Our construction company handles grading, drainage, slab prep, framing, and finish work with the county’s timeline built into the project schedule.
Site Prep and Drainage on Open Lots
On acreage, the ground is your first project. Round Rock’s expansive clay moves with moisture, and a slab poured without proper compaction and drainage will telegraph that movement into the walls. We re-grade, install post-construction drainage, and verify setbacks before forms go up. This is the work that never shows up in a pretty brochure but determines whether the structure lasts 5 years or 50.
Shops, Outbuildings, and Detached ADUs
Detached structures on Round Rock acreage almost always trigger a county permit review that city-only projects don’t face. We handle the survey, the septic and well setback checks, and the material scheduling. Material hauls matter here too. A 30-minute round trip to the nearest supply yard outside Round Rock adds real labor cost, and we build that into the draw schedule so you never get surprised by a dump fee or a delivery charge you didn’t approve.
Trusted Brands We Service in Round Rock
We install and service the brands Round Rock homeowners already trust, and we spec them into acreage projects with real numbers, not vague allowances. On a recent Teravista acreage ADU, we scoped a KraftMaid kitchen with Moen fixtures, and the county’s septic field survey ended up moving the building envelope 40 feet east. We re-graded the slab, verified the well setback, and wrote the revised scope and allowances into the change order before a single inspection. When hardscape is part of the project, we work with Unilock and Techo-Bloc pavers, which hold up well under Round Rock’s heat and occasional heavy rain. Parts and material access for these brands are fast for Round Rock customers because our crews are local to the area, not dispatching from across the state.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Round Rock Homes
- City-grade bids on county-regulated acreage. A contractor quotes a detached ADU without checking Williamson County septic and well setbacks. The layout dies, the price climbs, and the homeowner is stuck. We run county checks before quoting, and the written scope says exactly what we found.
- Blackland clay movement on slabs. Round Rock’s soil expands and contracts with moisture, and a slab-on-grade addition without a soil test and post-construction drainage will develop hairline cracks within two seasons. We test before we pour, every time.
- Unpriced material hauls on acreage. A 30-minute round trip to the nearest supply yard outside Round Rock isn’t free. Inexperienced builders fold that into “miscellaneous” at the end. We line-item it in the draw schedule so you see every dollar before work starts.
- Change orders after the fact. County inspectors find something the contractor didn’t plan for, and suddenly the price jumps. We build allowances and contingency language into the written scope, and any change order gets written approval from you before the work proceeds.
Pricing for General Contractor in Round Rock, TX
Here’s what acreage owners in Round Rock should expect to pay, in writing.
| Project | Round Rock Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
Several factors move these numbers in Round Rock specifically. Septic and well setbacks can shift a structure’s placement and add grading work. Long material hauls to acreage lots add labor and dump fees. Blackland clay requires a soil test and often deeper concrete prep. We put every one of these line items in writing before you commit. Call (903) 623-1966 and we’ll scope your lot properly, then hand you a written price. The estimate is free.
We Also Serve Cities Near Round Rock
Our crews work throughout Round Rock and the surrounding area, including Pflugerville, Hutto, Austin, and Manor. If your property sits between jurisdictions or you’re not sure which county office handles your permits, call us. We know where the lines are drawn, and we’ll tell you straight before you pay for a survey that goes nowhere.
Serving Round Rock, TX - Our Local Coverage Area
We’re based in the Round Rock 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 About General Contractor in Round Rock
Yes. If your property sits outside Round Rock city limits but within Williamson County, the county is your permitting authority for a detached ADU, and you do not need a separate city permit. If your lot is inside city limits, Round Rock’s building department handles it. We verify your jurisdiction on the first call so you’re not chasing the wrong office. Call (903) 623-1966 and we’ll check your address before you do anything else.
Blackland clay expands when wet and shrinks when dry, which means a slab-on-grade addition needs a soil test first and proper post-construction drainage after. Without both, you’ll see hairline cracks in walls and floors within two seasons. We test, compact, and re-grade before pouring, and we include the drainage plan in your written quote. That’s standard on every acreage addition we do in Round Rock.
Start with the county permit number, the septic and well setback distances, the soil test result, the material haul distance and cost, and the draw schedule with line-item allowances. If a contractor won’t put those in writing, walk. That’s the exact scope we provide on every detached structure we quote in Round Rock. Call (903) 623-1966 and we’ll send you the same format before you decide anything.
Because Round Rock acreage work carries county inspection requirements, septic and well setbacks, longer material hauls, and additional soil prep for blackland clay that city-only Austin projects don’t have. A fair quote reflects those realities. A quote that ignores them is low on paper and high by final invoice. We price Round Rock jobs for Round Rock conditions from the first written estimate.
We write every change order in plain language, with the revised scope, the allowance impact, and your signature required before work continues. On a Teravista acreage lot, a county septic survey once moved our ADU envelope 40 feet east after the initial quote. We re-graded the slab, verified the well setback, and put the revised scope and allowances into the change order before a single inspection. No verbal surprises, ever. Call (903) 623-1966 to walk your property with us and get a written price that accounts for the county before you’re committed.
Written by Isaac Pruett, Owner at Mason Remodeling Co Austin, serving Round Rock and the surrounding area.
