Very few backyards in Summerfield, Lewisville, Lexington or Clemmons are flat. Slope is the normal condition here, and how a builder handles it separates a project that looks intentional from one that looks like a pool dropped into a hillside.
The three approaches
Cut into the slope. The pool sits at the lower level with a retaining structure on the uphill side. Produces a sheltered, contained feel. Requires proper retaining design and, critically, drainage behind the wall.
Raise the downhill side. The pool sits higher with a raised beam and fill on the downhill edge. Produces the elevated, view-oriented result people usually want. Requires engineered fill and compaction, which is not optional and not cheap.
Split the difference. Cut on one side, fill on the other, balancing the earth on site. Usually the most economical because it minimizes haul-off and import, and it is what we do most often.
Retaining walls are structural, not decorative
A wall holding back saturated Piedmont clay is carrying real load. Height, drainage and reinforcement need to be designed rather than estimated, and above certain heights an engineered design and separate permit are required.
The walls that fail are almost always the ones with no drainage behind them. Water builds up in clay that does not drain, pressure increases, and the wall moves. Gravel backfill and a properly placed drain line are what prevent it.
Drainage decides whether it lasts
On a slope, water arrives at the pool from uphill. Every rain event sends it toward the deck and the equipment pad. A sloped-lot pool needs a plan for where that water goes — swales, French drains, grading — and that plan needs to exist before the dig, not after the first storm.
What the slope actually costs
Enough to matter. Retaining structures, engineered fill, additional drainage and slower excavation add real money against the same pool on flat ground. The variable is how much of the earth can be balanced on site rather than hauled away or brought in.
Why it is often worth it anyway
Elevation change is the thing you cannot manufacture on a flat lot. Raised beams, spillovers, stepped decks and a pool that sits above a view all come naturally on a slope and have to be built at great expense anywhere else.
The best projects we build are usually on the lots that looked most difficult at the first site visit.
Access is the hidden cost
On a sloped lot, getting equipment to the back of the property is frequently harder than the pool itself. A track hoe has limits on what grade it can safely work, spoil has to be moved uphill or downhill, and concrete and gunite trucks need a route and a place to stand.
Where access is genuinely constrained, the answer may be smaller equipment working longer, conveyors, or pumping gunite a longer distance. All of those cost more, and all of them are better identified at the site visit than discovered on day one.
Raised beams and what they are worth
A raised beam — where part of the pool wall sits above the surrounding grade — is what turns a slope into a feature. It creates a natural spot for a spillover, a seat wall, or a sheer descent, and it lets the pool sit level while the ground falls away.
It also means part of the shell is holding water above grade, which requires proper engineering and reinforcement. It is not a place to economise, and it is a good indicator of whether a builder does sloped work regularly.
The soil report question
On steeper sites, or where significant fill is required, a geotechnical report is worth the cost. It tells you what the soil will bear, how it will behave when saturated, and whether the fill plan is realistic.
Piedmont clay is generally competent but it changes volume with moisture, and a design that ignores that on a slope is a design that moves. Builders who work these lots regularly will raise this themselves.
Terracing the rest of the yard
Once retaining structures are being built for the pool, extending the idea to the rest of the yard is often much cheaper than doing it as a separate project later. Equipment is already on site, spoil is already being moved, and the design can balance cut and fill across the whole area rather than just around the pool.
The projects that look best on sloped lots are the ones where the whole backyard was designed as a set of levels rather than a pool inserted into a hillside.