Custom home building in Driftwood
Iron C Construction is a custom home builder in Driftwood, TX, and we build on the kind of land Driftwood is known for: rural acreage, ranch tracts, and wooded hillsides along Ranch to Market Road 150, about 24 miles southwest of downtown Austin. Driftwood grew up in the 1880s as a supply stop for the ranches and farms around it, and it is still an unincorporated Texas Hill Country community, home to several wineries and a lot of open country. Our team works out of nearby Wimberley, and Robert Castro, who founded the company in 2020, stays involved in every home we build.
Most people who call us about Driftwood already own land or are about to buy it. Building a house on rural acreage is a different job from building in a subdivision, and the differences show up in the permits, the water, the septic, and the long road between the gate and the front door.
Permits on unincorporated land
Because Driftwood has no city government, most homesites here have no city building department and no city building permit. That does not mean there is no review. On unincorporated land, Hays County requires a development permit for new construction, including houses, sheds, outbuildings, grading, fill, and creek crossings, and a separate permit for the on-site sewage facility. Under a 2009 state law the county adopted, a new home in the unincorporated county also has to be inspected three times: at the foundation before concrete is placed, at framing before the walls are covered, and at completion. The county does not perform those inspections itself, so the builder brings in a qualified third party inspector. We schedule all three as part of the job.
There is one exception worth checking before you buy. A few planned communities around Driftwood, including Driftwood Creek and Driftwood Golf and Ranch, are covered by development agreements with the City of Dripping Springs, and lots in those communities go through the city building permit process instead. We confirm which rules apply to your parcel at the first site visit.
Wells, septic, and laying out acreage
Out here a home almost always runs on a private well and a septic system, and those two pieces shape the site plan. The Hays Trinity Groundwater Conservation District covers the Trinity Aquifer under western Hays County, Driftwood included, and every new well has to be registered with the district before it is drilled. State well rules keep a new well at least 50 feet from a septic tank and 100 feet from a drainfield, and under the district’s August 2026 rules a typical home well must sit 100 feet from adjacent property lines and 150 feet from existing wells. On a narrow tract with a creek or a steep slope, that can settle where the house belongs.
Rock matters too. Where limestone sits close to the surface, Texas rules often call for an aerobic or other advanced septic system instead of a conventional drainfield, and cutting rock for a foundation costs more than digging soil. We walk the land, look at where the soil is deepest, and set the house, well, and septic so each one works.
Onion Creek and drainage
Onion Creek runs through the Driftwood area on its way east to the Colorado River, and lots near the creek and its side drainages can sit in a mapped floodplain. Hays County reviews development there closely, so we check the flood maps before design, keep the house and septic field out of low ground, and grade so water moves around the home, not toward it.
What building on acreage costs
For a starting benchmark, the National Association of Home Builders reports that the median contractor-built custom home in the United States cost about $166 per square foot to build in 2024, not counting land. At that national median, a $400,000 construction budget covers roughly 2,400 square feet before any site work. It is a reference point, not a quote.
On rural acreage the site work is real money. A long gravel or paved driveway, power run in from the road, a well, an advanced septic system, and rock excavation can all land on the same project. We price the house and the site together, line by line, so you can compare building against buying with the full cost in view.
Homes and buildings for rural property
Acreage usually means more than one building. Iron C Construction handles the main house and everything that tends to follow it:
- New custom homes designed for the slope, the views, and the way the land drains.
- Build on your lot for owners who already hold a ranch tract or homesite.
- Custom barndominiums that put living space and a work area under one roof.
- Garages, shops, and accessory structures for trucks, tractors, and equipment.
- Guest houses and casitas for family, guests, or a quiet place to work.
- Home additions that grow an existing country house.
- Whole-home remodels and renovations for older ranch houses that need new systems and layouts.
If you are deciding between a barndominium and a traditional build, our comparison of barndominium and custom home costs in Hays County lays out the trade-offs.
How we run a rural build
We build custom homes across the Central Texas Hill Country, and each project moves through site review and budget, design and selections, permits, construction, and a final walkthrough. On acreage we add a few steps early: confirming access for concrete trucks and lumber deliveries, staking the house, well, and septic locations on the ground, and planning where the power line and driveway will run. Construction drawings and 3D renderings let you see the house in place before anything is built.
Arthur Leyva, our Construction Coordinator, has more than 20 years in the field and keeps crews, deliveries, and the three county inspections on schedule. When the ground surprises us, as it sometimes does in the Hill Country, we walk you through what we found and what each option costs, and you make the call.
Planning a barn, office, or other commercial building as well? Our construction company serving Driftwood takes on commercial and pre-construction work too.
Planning a custom home in Driftwood
Whether you have a ranch tract off RM 150 or a homesite near Onion Creek, Iron C Construction can help you plan a home that suits the land and keeps the permits, well, and septic in order. Tell us about your property and what you want to build, and we will give you an honest budget and a realistic schedule. Contact us to set up a site visit, and read our reviews to hear from Hill Country homeowners who have built with our team.
