Semi-Inground Pool Installation: What to Expect from Start to Finish

Installing a semi-inground pool is one of the most exciting investments you can make in your home. It transforms your outdoor space into a private paradise. And, it’s the perfect spot for backyard memories for years to come.

But semi-inground pool installation is also a construction project. Like any project, knowing what to expect can make all the difference. At Fiesta Pools and Spas, we walk you through the semi-inground pool installation process so you know what to expect from start to finish.

The semi-inground pool is a versatile pool that combines the visual appeal of an inground pool with the flexibility and easier installation of an above-ground option.

Whether your yard has a slope, limited space, or you’re just looking for a modern aesthetic without the full excavation of an inground pool, semi-inground pools offer a fantastic solution.

With a semi-inground pool, installation takes about a week! How’s that for swimming this summer?

Here’s what you can expect:

Step #1: Site Prep and Excavation

The first phase in any pool installation is preparing your yard, and semi-inground pools require unique attention here. This includes:

Initial assessment: We evaluate the slope, soil conditions, and layout of your yard. Semi-inground pools are especially great for uneven or sloped backyards. Then, we recommend the best placement for both structure and aesthetics.
Marking and measuring: We clearly mark the pool footprint and take precise measurements to ensure proper leveling and drainage.
Partial excavation: Unlike inground pools, we don’t dig a full-depth hole. Instead, we excavate just enough to partially recess the pool into the ground, typically 24 to 36 inches deep. This also depends on the model and your preferences.
Access planning: We ensure there’s enough space for machinery and safe soil removal, all while minimizing disruption to your yard.

This phase usually takes 1–2 days, depending on your yard’s complexity and weather conditions.

Step #2: Timeframe: From Delivery to Swim-Ready

One of the biggest advantages of a semi-inground pool is how quickly it can be installed compared to a traditional inground pool. Once the site is prepped, we move right into installation. Here’s a general timeline:

Day 1: Pool delivery and placement. The pool wall panels or structure are assembled and leveled in the partially excavated area.
Days 2–3: Plumbing and electrical work are installed, and backfilling begins around the pool walls to secure the structure.
Days 4–5: Liner installation (for vinyl-lined semi-inground pools), water filling, and filter system setup.
By the end of Week 1: Most semi-inground pools are swim-ready within 5–7 days, weather permitting.

This efficient timeline means less disruption to your home and a faster path to summer fun!

Step #3: Coordination with Decks or Patios

A semi-inground pool offers more flexibility when it comes to surrounding features like decks and patios. In fact, one of the most appealing aspects of these pools is how well they integrate into a backyard with a raised or multi-level deck. Here’s how we handle it:

Integrated design: During planning, we work with you to design a deck that fits seamlessly with the pool’s height and access points.
Material coordination: We help you choose materials that are both pool-friendly and visually appealing, like slip-resistant composite decking or poured concrete with a textured finish.
Installation scheduling: If we’re building your deck or patio, we align it closely with the pool timeline so there’s no unnecessary downtime. If you’re using your own builder, we’ll communicate directly with them to coordinate steps like backfilling, framing, and finishing.

Decks around semi-inground pools aren’t just functional. They can enhance safety, boost visual appeal, and make entering and exiting the pool easy and comfortable.

Step #4: Post-Installation Maintenance Overview

Once your pool is installed and filled, keeping it in top condition is easier than you might think. Here’s what you can expect:

System orientation: We will walk you through your filtration system, pump, and optional features like lights or heaters. You will learn to operate everything with confidence.
Water care basics: We’ll show you how to test and balance your pool water using pH, chlorine, and alkalinity kits. Whether you’re using chlorine or a salt system, we make it simple.
Cleaning tools: Many semi-inground pools are compatible with automatic cleaners or robotic vacuums, which help minimize manual upkeep.
Seasonal support: If you prefer a hands-off approach, Fiesta offers services like pool openings and closings, cover installation, and routine maintenance plans.
Chemicals and accessories: Fiesta has everything you need to maintain and enhance your pool, including BioGuard pool chemicals. You can shop in-store or online.
Free water testing: We recommend testing your water at least once a week during the summer months. We also encourage you to bring a sample into one of our stores for regular testing. This service is free, and we’ll give you a computer printout of what your pool needs.

We’re here long after installation, whether you have a question, need supplies, or want to add accessories later.

Final Thoughts on Semi-Inground Pool Installation

A semi-inground pool offers the best of both worlds: the durability and look of an inground pool with a quicker, more affordable installation process. With the right planning, a professional team like Fiesta, and thoughtful design, you’ll have a backyard oasis that’s as functional as it is beautiful.

At Fiesta Pools and Spas, we specialize in guiding Oklahoma homeowners through every step of the process from the first site visit to that first splash.

If you’re considering a semi-inground pool for your home in the greater Tulsa area, we’d love to help you make it a reality.

Let’s talk about your dream pool — schedule a consultation with our team today!