Semi-inground pools are a great fit for sloped yards or homeowners who want the look of an inground pool without that price tag. But what does building one actually look like? This timelapse video shows every step of a semi-inground pool coming together.

What makes semi-inground construction different?

A semi-inground pool sits partly above ground and partly below it, which changes how much digging is involved compared to a fully inground pool. It’s a popular choice for yards with a natural slope, since the design can work with the land instead of requiring it to be leveled out completely.

Step 1: Utility check and partial excavation

Just like any inground project, the process starts with a call to 811 to mark underground utility lines, gas, cable, internet, and electric, before any digging begins. From there, the crew excavates only part of the area, since a portion of the pool will sit above grade. This typically means less digging and less hauled dirt than a full inground build, though every yard is different.

Step 2: Plumbing

Once excavation is far enough along, plumbing goes in to connect your future pump, filter, and return lines. As with any pool type, this step happens early since the pipes need to be in place before the walls and liner go in.

Step 3: Building the walls and retaining structure

Semi-inground pools often require a retaining structure to support the portion of the pool sitting above ground level. The pool walls themselves, whether steel, polymer, or another material, are installed with this support in mind, giving the pool a stable structure on a sloped or uneven yard.

Step 4: Sand base and liner

A smooth sand or cove base is laid along the bottom and walls of the pool to protect the liner and create a comfortable surface. The liner is then fitted carefully to the shape of your specific pool design.

Step 5: Filling the pool

Once the liner is in place, the pool is filled with water, which helps it settle properly into place against the walls and floor.

Step 6: Concrete and finishing touches

Semi-inground pools generally require less concrete work than a full inground pool, often limited to a smaller patio or landing area rather than a full surrounding deck. An electrician also connects your pump, heater, and lighting before the project wraps up.

Why choose semi-inground?

For a sloped or tricky backyard, a semi-inground pool can be a smart way to get an inground look without the cost and time of excavating a fully level yard. It’s one more reason Aloha builds all three pool styles, inground, semi-inground, and above ground, so your backyard, not just your budget, can help guide the decision.

Curious if semi-inground is right for your yard?

Every yard is different, and the best way to know what fits is to talk it through with someone who’s seen it all. Reach out to an Aloha sales rep today to find out what your backyard is really working with.