Short answer: Yes, you can build a custom pool on a sloped lot. In the Texas Hill Country it’s common. A hillside pool needs careful planning for grading, drainage, structure and access, and it may need retaining walls. Done right, the slope becomes the best feature of the yard, with raised walls, spillways and views a flat lot can’t offer.
Worthey Aquatics builds custom gunite pools on hillside lots across Boerne, San Antonio and the Hill Country. Here’s how it works.
Why Sloped Lots Are Common Around Boerne and San Antonio
From Boerne and Fair Oaks Ranch to The Dominion, Stone Oak and Blanco, much of the area north of San Antonio sits on rolling limestone hills. Many of the best homesites face a view, which means the yard falls away from the house. Building a pool there is a matter of engineering and design, not luck.
Why Gunite Works Best on a Slope
Gunite is sprayed concrete over a steel rebar frame, shaped on site. That means the pool can be built to fit the grade: one side can sit in the ground while the other rises as a finished wall. It can carry a raised spa, a vanishing edge or a waterfall wall. Prefab shells can’t adapt to a hillside the same way.
The Four Things a Hillside Pool Has to Get Right
1. Grading and site layout
We first decide where the pool sits relative to the house and the slope. Cutting into the hill, building up from the low side, or a mix of both each changes the cost, the views and how the pool relates to the patio.
2. Structure and retaining walls
On the downhill side the pool wall may be partly or fully exposed. That wall and any retaining walls are designed to hold the soil and the water. Limestone is common in the Hill Country; it’s a stable base but can slow excavation.
3. Drainage
Rain on a hillside moves fast. Good design steers runoff around the pool and deck, not into them, and keeps water away from the house foundation.
4. Access
Hillside lots often have tight or steep access for excavation and gunite equipment. We plan this during the design consult so there are no surprises.
Real Example: Kendall Cyn in Boerne
Our Kendall Cyn project in Boerne sits on a Hill Country hillside. Instead of fighting the slope, the design uses it: the pool is set into the grade and opens to the view, which is what the drone footage of the project shows best. The result looks like it belongs on the land. See more on our Boerne pool builder page.
Design Ideas That Use the Slope
- Vanishing (infinity) edge: Water spills over the low side toward the view. Our Terra Mont project has an infinity edge. Not every yard is a fit; see Hill Country negative edge pools.
- Raised spa with spillover: A spa set higher than the pool, like at Canyons at Scenic Loop (stacked stone) or Stockdale, TX (raised spa with waterfall wall).
- Sheer descents and water walls: Like at The Dominion, finished in glass tile.
- Terraced decks: Steps down the slope to create separate lounging areas.
- Night lighting: LED lighting on the exposed walls makes a hillside pool stand out after dark.
For tighter yards, see Small Backyard, Big Impact.
Does a Sloped Lot Cost More?
Usually, yes. Custom gunite pools start around $75K–$100K, and most land between $100K and $200K+. Slope, retaining walls, rock and access tend to push a project higher in that range. Features like a vanishing edge add more. See How Much Does a Custom Pool Cost in San Antonio? for the full breakdown.
How Long Does It Take?
A typical build takes 8–12 weeks of construction. Hillside projects with extra wall work and rock can sit toward the longer end. Design and permitting come first.
FAQ
Can you build a pool on a sloped backyard?
Yes. Gunite pools can be designed to fit the grade, with structure, retaining walls and drainage planned for the slope.
Is a hillside pool more expensive?
Often. Extra structure, rock excavation and access can raise the cost, but the slope also allows features like vanishing edges and raised spas.
Do I need a retaining wall?
Many sloped lots do. We decide during design based on the grade and where the pool sits.
What about limestone?
It’s common in the Hill Country. It’s a stable base but can take longer to excavate.
Do you build in Boerne and Blanco?
Yes, including Kendall Cyn in Boerne and Vaaler Creek in Blanco, plus Fair Oaks Ranch, The Dominion and across San Antonio.
Walk Your Hillside With Us
Every slope is different, and the best way to see what’s possible is on site. Book a free design consult or call 210-760-7236. Browse real projects in our gallery.
