A backyard pool doesn’t always have to be fully in the ground to feel thoughtfully designed. Semi in-ground pools sit somewhere between above-ground and traditional in-ground pools, which makes them an interesting option for homeowners who want something that looks integrated into the yard without the full cost or excavation. Installation typically involves partially excavating the site, placing and leveling the pool structure, and then backfilling and finishing with your choice of decking or landscaping. In most cases, the process can be completed in a few days to a couple of weeks, depending on yard conditions and pool size, so it’s generally less complex and time-consuming compared to full inground installations.
What I like about semi in-ground pool design ideas is how flexible they are. Because part of the structure remains above the soil, you can work with slopes, uneven yards, or tighter spaces that might not suit a standard pool installation. With the right liner color and layout, these pools can still feel natural and visually balanced in the backyard.
In terms of cost, semi-in-ground pools generally fall between above-ground and fully in-ground pools. While they tend to cost more than basic above-ground options, they are often noticeably more affordable than a custom in-ground pool installation because they require less excavation and fewer structural changes to your yard. This makes them a practical choice for homeowners who want an integrated, backyard-friendly pool without the highest price tag.
In this article, I’ll walk through several pool layouts and liner styles that work especially well for semi-in-ground installations. Some focus on compact yards, others suit longer backyard spaces, and a few simply create a calm water color that makes the whole area feel more inviting.
15×30 Semi In-Ground Pool with Blue Grotto Liner for a Classic Backyard Look
A 15×30 rectangular semi-in-ground pool is one of the most familiar shapes you’ll see in backyard pool setups. The proportions work well in many yards because the length allows for swimming laps while the width still leaves room around the pool for decking or grass. When the pool is partially excavated and sits less than 30 inches above ground, it starts to feel like a built-in feature rather than a standalone structure.
The Blue Grotto liner plays an important role in the overall look. It creates a deeper blue water tone that feels similar to many traditional inground pools. Because the color isn’t overly bright, it tends to blend naturally with outdoor materials like wood decks, stone edging, or simple grass landscaping.
If you’re planning a backyard layout around this pool size, try leaving at least one long side open for a small lounging area. A few simple deck chairs and a narrow wood platform can turn the pool edge into a comfortable place to relax while keeping the rest of the yard open and usable.
15×24 Semi In-Ground Pool Layout for Compact Backyard Spaces
Not every backyard has the space for a long pool, which is where the 15×24 semi-in-ground layout becomes practical. It’s noticeably shorter than a 15×30 pool, but it still provides enough room for casual swimming, floating, or family time in the water. Because it occupies less yard space, it often fits more comfortably into suburban backyards.
When installed as a semi-in-ground pool with less than 30 inches above the soil, the structure feels much less bulky than a full above-ground pool. The partial excavation also allows the pool to sit more naturally within the yard’s landscape, especially if the surrounding ground slopes slightly.
One approach that works well with this size is creating a simple deck along one end of the pool rather than wrapping the entire perimeter. This gives swimmers a convenient entry point while keeping the rest of the pool surrounded by grass or garden beds, which helps maintain a relaxed backyard atmosphere.
Oval Vista Semi-In-Ground Pool with Caribbean Teal Liner for a Softer Pool Shape
Oval pools bring a softer look to the backyard compared to rectangular shapes. A 12’6″ × 24’6″ Oval Vista semi-in-ground pool works especially well in yards where you want the pool to feel less rigid and more natural in the landscape.
The Caribbean Teal liner changes the water tone noticeably compared to deeper blue liners. Instead of a dark pool surface, the water appears lighter and slightly turquoise, which gives the pool a calm, resort-like feel during the daytime. In bright sunlight, the color reflects beautifully and can make the entire backyard feel brighter.
If you’re considering an oval semi-in-ground pool like this, try positioning it where the long sides face open lawn or garden space. This allows the curved ends to become a visual focal point. Even a simple border of gravel or low plants around the pool edge can help emphasize the shape without making the area feel crowded.
24-Foot Round Semi-In-Ground Pool for Balanced Backyard Layouts
Round pools often work surprisingly well in backyards that feel difficult to plan. A 24-foot round semi-in-ground pool creates a centered focal point, which can simplify the rest of the layout around it. Instead of designing around long straight edges, you can arrange seating, paths, or small garden areas in a circular flow around the pool.
Because this pool type is partially installed into the ground, it doesn’t feel as tall as a typical above-ground pool. With less than 30 inches visible above the surface, the structure becomes visually lighter and blends more naturally with grass or patio areas.
A practical idea for round pools is leaving a narrow gravel or stone ring around the perimeter. This small border helps with drainage and keeps grass from growing right up to the pool wall. It also creates a subtle transition between the pool and the rest of the yard, which makes the installation look more intentional.
15×30 Vista Semi In-Ground Pool with Blue Grotto Liner for Deep Water Color
A 15×30 Vista semi in-ground pool has a similar footprint to the earlier rectangular layout, but the liner choice can noticeably change how the pool feels in the yard. Using an all Blue Grotto liner creates a deeper, richer water color that often reminds people of traditional resort pools.
Because this pool sits partially below ground, the edges don’t dominate the yard the way a full above-ground pool might. The structure stays low enough that the surrounding landscape still feels open. This works especially well in backyards where you want the pool to be present without taking over the entire space.
One practical way to design around this pool is to build a small deck platform along one corner instead of the entire side. This gives you a natural entry point for stairs while leaving most of the pool surrounded by lawn. The mix of wood decking and grass keeps the space feeling relaxed and informal.
15×24 Semi In-Ground Pool with Bimini Isle Liner and Marine Sparkle Bottom
Some pool liners add subtle texture to the water’s appearance, and the Bimini Isle liner with a Marine Sparkle bottom is a good example. When sunlight hits the water, the sparkle effect creates small reflections across the pool floor, which gives the water a brighter and slightly shimmering look.
In a 15×24 semi-in-ground pool, this liner combination works nicely because the pool isn’t extremely large. The reflective bottom helps the water appear clearer and more vibrant without feeling overly decorative.
If you’re planning the surrounding space, consider keeping the pool area simple so the liner remains the visual highlight. A light wood deck or pale stone border pairs nicely with this type of liner because it reflects sunlight back toward the water. Even a small seating corner with two chairs and a side table can make the area feel finished without adding clutter.
Oval Above-Ground Pool with Caribbean Teal Liner for a Raised Pool Look
Not every pool in this list sits partially underground. A 12’6″ × 24’6″ oval above-ground pool can still look intentional in a backyard if the surrounding space is planned thoughtfully. The oval shape softens the visual impact and keeps the structure from feeling too boxy.
The Caribbean Teal liner adds a lighter, tropical tone to the water. On sunny days, the pool reflects a turquoise color that can make even a simple backyard feel a little more relaxed. This liner color works especially well when the pool is surrounded by greenery or grass.
One simple trick with above-ground pools is building a small raised deck along one side rather than around the entire structure. A short wooden platform with a few steps creates easy access while visually connecting the pool to the rest of the yard. It also provides a spot for towels, chairs, or a small umbrella.
Semi In-Ground Pool with Bella Vista Liner for a Soft Blue Water Tone
The Bella Vista liner creates a softer water color compared to darker blue liners. Instead of deep navy tones, the pool water appears lighter and more relaxed, especially in natural daylight. This works well for homeowners who prefer a calm backyard atmosphere rather than a dramatic pool color.
When used in a 12’6″ × 24’6″ semi in-ground pool, the liner helps the pool blend naturally with surrounding outdoor materials. Wood decks, stone patios, and grass landscaping all pair easily with the lighter water tone.
If you’re designing the space around this type of pool, try incorporating a small transition area between the pool and the rest of the yard. A simple gravel border or narrow stone walkway around the edge can help define the pool zone while keeping the backyard easy to maintain. It’s a small detail, but it often makes the pool installation feel more integrated with the rest of the outdoor space.
21-Foot Round Above-Ground Pool with Bella Vista Liner for Simple Backyard Installations
A 21-foot round pool is often a good middle ground for homeowners who want a pool without dedicating too much of the yard to it. The circular shape naturally keeps the footprint compact, which makes it easier to fit into smaller backyards while still leaving space for seating or lawn areas.
Using the Bella Vista liner keeps the water tone light and welcoming. Instead of the darker pool colors you sometimes see, the liner gives the water a soft blue appearance that looks especially pleasant in daylight. When the sun reflects across the surface, the pool tends to look bright and clear rather than deep and shadowed.
A practical way to integrate a round above-ground pool like this is to create a small activity zone next to it. A few outdoor chairs, a low table for drinks, and a narrow stepping-stone path leading to the pool ladder can make the area feel organized without turning the entire backyard into a pool deck.
18-Foot Round Semi-In-Ground Pool with Capri Blue Grotto Liner
An 18-foot round semi-in-ground pool is slightly smaller than many round pool installations, but that size can actually work in its favor. Because the pool sits partially below ground, the visible wall height stays low enough that it doesn’t feel bulky in the yard.
The Capri Blue Grotto liner gives the water a deeper, richer blue tone compared to lighter liners. This darker water color can create a sense of depth even in a modest-sized pool, which helps the pool feel a little more substantial visually.
If you’re working with a yard where space is limited, this pool size can be paired nicely with simple landscaping. A small border of river stones around the base keeps grass away from the pool wall and helps drainage during rain. It’s a small detail, but it makes maintenance easier while giving the pool area a cleaner look.
24-Foot Round Semi-In-Ground Pool for Symmetrical Backyard Layouts
A 24-foot round semi-in-ground pool is large enough to become the main feature of a backyard while still keeping a simple shape. The circular layout tends to create balance in the space because everything around the pool naturally radiates outward from the center.
Because the pool sits less than 30 inches above ground, it blends into the landscape more easily than a typical above-ground pool. The lower profile allows nearby seating areas, decks, or garden beds to remain visually connected to the pool instead of being blocked by tall walls.
One layout that works well with this pool size is placing a small deck platform on one side and leaving the rest surrounded by lawn. This combination gives swimmers a comfortable place to enter the pool while keeping the backyard feeling open and usable for other activities.
24-Foot Round Semi-In-Ground Pool with Blue Beach Pebble Liner
Liner patterns can subtly change the character of a pool, and the Blue Beach Pebble liner is a good example. Instead of a solid color, the pattern creates the appearance of a textured pool floor that resembles small pebbles beneath the water.
In a 24-foot round semi-in-ground pool, this liner can make the water appear slightly lighter and more reflective. The pattern interacts with sunlight in a way that gives the water surface a bit more visual movement, especially on bright days.
When using a liner with a visible pattern, I usually prefer to keep the surrounding pool area simple. Grass, wood decking, or neutral stone edges help the liner stand out without competing visually. Even a few lounge chairs placed a short distance from the pool can complete the space while keeping the focus on the water itself.
15×24 Semi In-Ground Pool with Kontiki Pattern Liner
A 15×24 semi-in-ground pool is a comfortable size for many backyards, especially when you want a pool that feels usable without dominating the entire outdoor space. The rectangular shape provides enough length for swimming while still leaving room around the yard for seating or a small lawn area.
The Kontiki pattern liner introduces a little more visual detail to the pool interior. Instead of a single color, the liner often includes tile-like patterns that give the water a slightly decorative edge without making the pool feel overly designed. When sunlight reflects across the liner, the pattern becomes subtle but noticeable, which adds character to the pool surface.
One practical way to work with this pool layout is to place the pool parallel to the longest side of the yard. This creates a natural pathway along one side where you could add stepping stones or a narrow strip of decking. It keeps the pool accessible while allowing the rest of the backyard to remain open for outdoor activities.
Oval Semi-In-Ground Pool Layout for Narrow Backyard Spaces
Backyards don’t always come in perfect square shapes, and that’s where oval pools can be surprisingly helpful. A 12’6″ × 24’6″ oval semi-in-ground pool works particularly well in yards that are long and narrow because the curved ends soften the layout.
When the pool is partially excavated into the ground, the visible wall height stays relatively low, which keeps the yard from feeling crowded. The oval form also creates smoother walking paths around the pool, making it easier to move between different areas of the backyard.
If you’re planning around this shape, consider leaving one long side slightly wider than the other. That extra space can become a relaxed sitting area with a couple of outdoor chairs or a small bench. The opposite side can remain simple with grass or a gravel border, keeping the pool area balanced.
12’6″ × 21’6″ Oval Semi In-Ground Pool with Rawley Island Liner and Bayview Bottom
This slightly shorter 12’6″ × 21’6″ oval semi in-ground pool works nicely in backyards where space is limited, but a pool is still part of the plan. Even though the pool isn’t extremely long, the oval shape still allows people to move comfortably in the water without feeling cramped.
The Rawley Island liner combined with the Bayview bottom creates an interesting layered effect in the pool. The upper liner pattern provides a decorative border, while the bottom liner helps brighten the water color and make the pool floor more visible.
When installing a pool of this size, it often helps to focus on simple surrounding materials. A narrow wooden platform for the pool ladder and a small gravel edge around the base can make the installation feel tidy without requiring a full deck build. For many homeowners, this approach keeps the backyard easier to maintain.
15×30 Oval Semi In-Ground Pool with Antigua Tile Liner and Cobalt Kontiki Bottom
A 15×30 oval semi-in-ground pool combines the spacious feel of a long pool with the softer appearance of curved edges. The extra length makes it comfortable for swimming, while the oval shape prevents the structure from feeling too rigid in the landscape.
The Antigua Tile liner paired with a Cobalt Kontiki bottom introduces more visual texture to the pool interior. The tile-style border along the upper edge gives the pool a finished look, while the cobalt-toned bottom deepens the water color slightly.
In a backyard setting, a pool like this often benefits from a modest deck area near the entry point. Even a small corner deck with stairs can make access easier and provide a place to set towels or sit near the water. The rest of the pool can remain surrounded by lawn, which keeps the overall backyard feeling open and comfortable.
Bringing These Semi-In-Ground Pool Design Ideas Into Your Own Backyard
Looking through different semi-in-ground pool design ideas, it becomes clear that small choices—like pool shape, liner color, or layout—can change how the entire backyard feels. Some pools work best in compact yards, while others fit better in larger spaces where the pool becomes the center of outdoor activity.
What I’ve learned from working on backyard projects over the years is that the most enjoyable outdoor spaces aren’t always the most elaborate ones. A thoughtfully placed pool, a comfortable place to sit nearby, and a simple layout that leaves room for everyday life can often feel better than a heavily built-up yard.
If you’re planning a semi-in-ground pool, take time to think about how the pool will interact with the rest of your backyard. Even small details like where the entry steps go or how the pool edge meets the grass can make the whole space feel more natural and enjoyable to spend time in. Also, remember that because these pools have both above-ground walls and in-ground surfaces, it’s helpful to regularly check for debris buildup at the waterline and around the base. Keeping leaves and grass clippings clear from the edges and rinsing down the pool walls occasionally can make routine maintenance much simpler and help your pool look great over time.
You can follow The Decor Nest on Pinterest and Facebook for new ideas, room inspiration, and styling tips shared regularly. If you’re ready to take the next step on your semi-in-ground pool project, consider reaching out to a local pool professional who can help you understand your options and guide you through the installation process. Also, be sure to check your local building codes and pool regulations before moving forward to ensure a smooth and compliant installation.
