







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Jollyville
Hiring a General Contractor in Jollyville means finding someone who understands unincorporated Williamson County rules, not just Austin city permits. That’s the difference between a bid that holds and one that falls apart after the first inspection. Penhallow Remodeling Austin runs a General Contractor crew that works Jollyville acreage, ranch homes, and new subdivisions every week. If you’re planning an addition, a whole-home remodel, or a detached shop, call Trevor Nash’s team at (325) 225-5429. We’ll give you a written price before any work starts and a written guarantee that backs it for 365 days.

Why Penhallow Remodeling Austin Is Jollyville’s Preferred General Contractor Company

Jollyville homeowners keep calling us back because we answer the phone and we show up. A live person picks up 24/7, so when you call about your addition off US 183 or your kitchen remodel near Balcones Woods, you’re talking to a human being, not a voicemail maze. Our technicians are background-checked and arrive in uniform, and you’ll know their names before they walk through your door.
We’re part of the Kingswell family of companies, operating to the Kingswell standard since 2004: a written price before the work, a real arrival window, and a written guarantee on every project. The 365-Day Done Right Promise means if something fails within a year, we come back and fix it at no charge. No re-inspection fee. No service call. That promise is on paper, not just spoken.
Trevor Nash leads every scope and quote personally. When a Jollyville homeowner has a question about Williamson County setbacks or a foundation detail on clay soil, they talk to someone who has actually worked it.
Styles & brands we work with







Construction Company in Jollyville
As a Construction Company in Jollyville, the work starts long before any framing goes up. Most of our Jollyville projects sit on acreage in the older ranch-home pockets or along the 183 corridor, which means county permits, septic and well setback review, and excavation conditions that vary lot to lot. A home addition in Jollyville typically runs $45,000 to $130,000, and an ADU construction project falls between $90,000 and $220,000 depending on whether you’re building a detached unit or converting existing space.
Acreage Site Work and Permitting
Before we quote a Jollyville addition or shop build, we walk the lot and check the same things Williamson County will check: septic tank location and drain field reserves, well head setbacks, and where the dripline actually falls. On a 1.2-acre Jollyville lot, moving a septic system can add $20,000 or more to the job. We find that before you sign anything, not after demo day.
Detached Shops and Outbuildings
Jollyville’s older ranch properties often have room for a 400 to 800 sq ft detached shop or garage. Those builds bring their own rules: load-bearing steel frame details, slab reinforcement for expansive clay, and a driveway approach that can handle a concrete truck without tearing up the yard. We scope those lines before we quote, so the number on your proposal is the number on your invoice.
Remodeling Contractor in Jollyville
A Remodeling Contractor in Jollyville handles a different set of problems than one working a tight Austin infill lot. The older single-story brick veneer homes built in the 1970s and 80s around Jollyville often have original cast-iron plumbing that’s cracked from decades of clay soil movement. Open up a wall for a kitchen remodel and you can find a waste line ready to fail. A kitchen remodel in Jollyville runs $14,000 to $45,000, and a bathroom remodel runs $9,000 to $28,000, but those numbers shift when we have to repipe first or add structural piers under a slab that’s moved.
1970s and 80s Ranch Renovation
We recently GC’d a whole-home reno off Spicewood Springs Road on a 1.2-acre lot. The cast-iron waste lines had cracked from the clay soil, so we handled the repipe rough-in, worked with Williamson County on the well and septic setback allowances, and built a 400 sq ft detached shop with a load-bearing steel frame, all before the inspection sign-off on the main addition. That’s the kind of job that separates a Jollyville GC who knows the ground from one who’s guessing.
Kitchen and Bath Scope on Slab Foundations
Most original Jollyville homes sit on slab foundations, which means moving a sink or toilet drain isn’t a simple basement drop. We build access routes and trenching into the quote so you’re not surprised by a concrete saw bill on week three. Cabinet lines like KraftMaid and Wellborn and countertops from Cambria and Silestone are standard options, and every install carries our written guarantee alongside the manufacturer’s.

Trusted Brands We Service in Jollyville
We install materials from brands that hold up to Jollyville’s hot, humid summers and the occasional hailstorm that comes through Williamson County. James Hardie siding, Belgard pavers, and Therma-Tru exterior doors are common on our Jollyville jobs. We stock the fasteners, flashing, and sealants those products require, so when a Jollyville homeowner needs a repair or a warranty follow-up, we’re not waiting on a shipment from out of state. The material warranty and our 365-Day Done Right Promise stack on top of each other. That’s the point: two layers of protection on one written quote.
See the difference
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AfterCommon General Contractor Problems We See in Jollyville Homes
- Expansive clay soil moving slabs and cracking brick veneer. Jollyville’s clay soils expand and contract with moisture, and the older ranch homes feel it first. We spec deeper piers and slab reinforcement on every addition, because a cracked foundation a year later isn’t a warranty issue, it’s a planning failure.
- Cast-iron plumbing that’s reached the end of its life. Many original Jollyville homes still have cast-iron waste lines, and the shifting soils have taken their toll. If you’re remodeling a kitchen or bath in a 1970s or 80s ranch, plan on a repipe assessment before finish work starts.
- Williamson County septic and well setbacks that kill a layout. A detached shop or ADU that looks perfect on paper might sit too close to a septic drain field or well head. We check those setbacks during the quote, not after the permit application gets rejected.
- Rutted ranch driveways and stuck concrete trucks. Tight gravel drives on older Jollyville lots can’t always handle a loaded mixer. We plan a gravel turnaround or a pump route before the pour, so the truck doesn’t leave the yard looking like a mud pit.
Pricing for General Contractor in Jollyville, TX
Here’s what to expect for the most common Jollyville GC projects. These are real ranges based on the work we’ve quoted for Jollyville homeowners, and they assume standard scope for this area’s lot sizes and soil conditions. If your job hits limestone during excavation, or Williamson County requires a septic relocation, the number moves and we’ll explain exactly why in writing before anything changes.
| Project | Price Range in Jollyville |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Driveway Replacement | $5,000 – $14,000 |
Call (325) 225-5429 and we’ll give you a written, line-item price before any work begins. Free estimates, no pressure, and a number you can hold us to.
We Also Serve Cities Near Jollyville
Our crews cover Jollyville and the surrounding Williamson and Travis County communities, including Austin, Cedar Park, Georgetown, and Elgin. If you’re in one of those areas and need a General Contractor in Jollyville who understands local permitting and soil conditions, we can help. The same written price and 365-Day Done Right Promise apply on every job, no matter the city.
Serving Jollyville, TX - Our Local Coverage Area
We’re based in the Jollyville 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 Jollyville
Jollyville sits in unincorporated Williamson County, so county permits and inspections govern a detached garage or shop build, not City of Austin permits. That changes the submittal requirements, the inspection schedule, and sometimes the timeline, so we build county approval time into every Jollyville quote. Call (325) 225-5429 and we’ll walk you through what applies to your specific lot.
Williamson County enforces minimum setback distances between structures and both septic systems and water wells, and those distances vary based on tank size, drain field design, and well depth. On a smaller Jollyville acreage lot, that can shrink your buildable footprint by a lot. We check the septic as-builts and the well location before quoting so your project fits the county’s rules on day one.
The expansive clay soils across Jollyville’s older ranch-home areas swell and shrink with moisture changes, and slab foundations move with them. Homes on the lake side often sit on shallower, rockier ground that holds more stable. We spec deeper piers, moisture barriers, and steel reinforcement for Jollyville additions specifically to compensate for that movement.
Not always, but you should plan for it. If the waste lines under your slab or in the walls are original cast iron, decades of Jollyville clay movement have likely stressed them. We’ll camera the lines during the quote and tell you honestly if a repipe belongs in the scope, before you pour money into tile and cabinets that might have to come out later.
Limestone is common across Jollyville acreage, and when a footing or trench hits it, the excavation cost goes up. A typical change order might add $3,000 to $8,000 for rock breaking and haul-off, depending on depth and volume. We write every change order as a line-item price you sign before the work changes, never after the fact.
Need a written price for your Jollyville project? Call (325) 225-5429 and ask for Trevor Nash. We’ll answer live, schedule the walk, and give you a number you can plan around. Free estimate, written guarantee, and a 365-day promise that holds.
Written by Trevor Nash, Owner at Penhallow Remodeling Austin, serving Jollyville and surrounding Williamson County communities.











