What Nearly 20 Years of Building Taught Me About Choosing the Right Lot in the Hill Country
I’ve talked more families out of a “perfect” lot than I can count. And after nearly 20 years in this business, I can tell you that choosing the right lot is the single most important decision you’ll make.
They’ll send me a listing with a gorgeous hilltop view overlooking the Hill Country, oak trees everywhere, a creek at the back of the property — and they’re ready to write the check that afternoon. I get it. That feeling when you stand on a piece of land and think, “This is it. This is where we build our home.” I’ve felt it myself.
But after nearly 20 years of building custom homes across San Antonio, Boerne, New Braunfels, and the surrounding Hill Country, I’ve learned that what’s under the surface matters more than what’s on top of it. Choosing the right lot comes down to understanding the land — not just falling in love with the view.
Here’s the checklist I walk through with every client before they commit to a piece of property. These are the things I’ve learned the hard way so you don’t have to.
Start With What’s Under Your Feet
The Hill Country is beautiful, but it’s geologically complicated. Within the same subdivision, you can find lots that sit on relatively workable soil and lots that are solid limestone shelf two feet below the surface. That difference can mean $30,000 to $50,000 or more in additional foundation and excavation costs.
I always recommend a geotechnical soil report before you close on land. It costs a few hundred dollars and can save you a small fortune. You’re looking for the depth to rock, the soil composition, and how the ground expands and contracts with moisture. Expansive clay is extremely common in the San Antonio area, and it’s the number one cause of foundation movement in this part of Texas.
If the soil report comes back with concerns, it doesn’t necessarily mean you walk away — it means we design for it. Pier and beam foundations, structural reinforcement, proper drainage — all of these are solvable problems when you know about them upfront. The expensive surprise is the one you didn’t plan for.
Drainage and Slope: Gravity Always Wins
I love a sloped lot for the views, but water follows gravity, and if your home is in the path of runoff from higher ground, you’ll be dealing with drainage issues for the life of the house. I look at how water moves across a property during a hard rain — not just where it sits on a clear day.
In the Hill Country, flash flooding is real. Lots near creeks and low-water crossings can look peaceful in October and become a serious problem in May. I’ve seen clients lose access to their own driveway because a creek crossing flooded. Check the FEMA flood maps, but also talk to neighbors. They’ll tell you things a map won’t.
On sloped lots, we can absolutely build — and build beautifully. Some of my favorite projects sit on dramatic terrain. But the site prep and drainage engineering have to be done right from the start. Retaining walls, French drains, and proper grading aren’t optional on a hill — they’re part of the foundation budget.
Water and Sewer: The Conversation Nobody Wants to Have
Inside San Antonio proper and in established suburbs, you’ll typically connect to SAWS water and city sewer. That’s straightforward. But once you get into Kendall County, Comal County, or unincorporated parts of Bexar County — and that’s where a lot of the best Hill Country land sits — you’re looking at well water and a septic system.
Neither of those is a dealbreaker, but both require homework. A well needs to be drilled and tested for flow rate and water quality. Septic systems need a percolation test to make sure the soil will actually absorb wastewater at the required rate. Rocky ground with thin soil can make conventional septic impossible, pushing you toward an aerobic system that costs more to install and maintain.
And if your property sits over the Edwards Aquifer recharge zone, there’s an additional layer of regulation from the Edwards Aquifer Authority. Impervious cover limits, water quality controls, and a separate permitting process that runs parallel to the city or county permits. It’s manageable, but you need to know about it before you buy — not after.
HOA and Deed Restrictions: Read the Fine Print
This one catches people off guard constantly. Choosing the right lot means reading the fine print. People buy a lot in an area with no city zoning, thinking they have total freedom — only to discover that the subdivision’s deed restrictions dictate everything from the minimum square footage to the exterior materials to the color of your roof.
Some Hill Country communities have restrictions that require a certain percentage of natural stone on the exterior. Others mandate specific architectural styles. A few even have approval committees that review your plans before construction begins. None of that is bad — it protects your investment — but it absolutely shapes what you can build and what it will cost.
I tell every client: get me a copy of the deed restrictions and the HOA bylaws before you make an offer. I’ll read them and tell you what they mean for your build. Ten minutes of reading can prevent months of frustration.
Utilities and Access: The Hidden Budget Items
Electricity, gas, and internet access are easy to take for granted until you’re building on a five-acre lot at the end of a private road. Running power lines, trenching for gas, and establishing broadband can add meaningful cost — especially on larger rural properties.
Check with CPS Energy for power availability, Atmos Energy for natural gas, and your preferred internet provider before you commit. In some Hill Country locations, propane is the only gas option, and satellite or fixed wireless may be your best bet for internet. These aren’t dealbreakers, but they’re real costs that belong in your budget from day one.
Driveway access matters too. A long gravel drive needs a culvert at the county road, proper grading, and potentially a gate. If the lot is accessed by a shared easement, make sure the maintenance responsibility is spelled out in writing.
The Lot I Walked Away From
A few years back, a client brought me a stunning 10-acre property outside Boerne. The views were incredible — exactly what you picture when you think about Hill Country living. The price was right. On paper, it was perfect.
But when I walked the property, I saw problems. The only buildable pad was in a drainage path between two higher ridges. The rock was close to the surface across the entire property, which meant foundation costs were going to be significant. The nearest utility connection was over a quarter mile away. And the deed restrictions required full stone exterior on all four sides.
I sat down with the client and laid it all out. The land itself was affordable, but by the time you added site prep, rock excavation, extended utility runs, and stone-on-all-four-sides construction, we were looking at a total project cost that was $80,000 to $100,000 more than they’d budgeted.
We found them a different lot two miles down the road. Better soil, existing utility stubs, and restrictions they could work with. They saved months of headaches and ended up with a home they love on a lot that actually worked for their budget.
That’s what I mean when I say choosing the right lot matters more than anything. I’d rather help you find the right property than build on the wrong one.
Choosing the Right Lot: My Quick Evaluation Checklist
Before you make an offer on land in the Hill Country, make sure you can answer these questions. Choosing the right lot means doing your homework upfront:
- What does the soil report say about depth to rock and soil composition?
- Where does water go during a heavy rain?
- Is the property in a FEMA flood zone?
- Is water service municipal (SAWS) or well?
- Is sewer service available or will you need septic?
- Does the property sit on the Edwards Aquifer recharge zone?
- What do the deed restrictions and HOA rules actually say?
- Where are the nearest utility connections for power, gas, and internet?
- What is the access situation — public road, private road, or easement?
- Is the buildable area of the lot actually where you’d want the house?
If you can answer all ten of those with confidence, you’re in a strong position. If you can’t, that’s exactly why you call a builder before you call a real estate agent.
Let’s Walk Your Lot Together
I offer a free lot evaluation walk-through for anyone seriously considering building a custom home in the San Antonio or Hill Country area. We’ll walk the property together, I’ll tell you what I see, and you’ll leave with a realistic picture of what building on that land will look like — and what it will cost.
No obligation. No sales pitch. Just honest information from a builder who’s been doing this for nearly 20 years.