Pool shapes Guide
Choosing a pool shape is one of the most permanent decisions you will make for your backyard. Unlike paint colors or deck furniture, the shape of your pool stays with your home for decades. Get it right and you will love your backyard every single summer. Get it wrong and you will spend those same summers wishing you had made a different call. This guide walks you through every shape option, what each one is actually built for, and how to match the right one to your yard, your family, and the way you plan to live outside.
Pool shape sets the entire tone for your backyard. Every other design decision, from decking to landscaping, flows from the shape you choose.
Start With Your Yard, Not Your Wishlist
The most common mistake homeowners make when choosing a pool shape is starting with aesthetics instead of logistics. You fall in love with a large freeform pool in a magazine spread, then discover your yard is 45 feet wide with a slope on one side and a utility easement on the other. Now you are trying to fit a dream into a space it was never designed for.
The right approach is to let your yard tell you what works first, then refine from there based on how you plan to use the pool and the look you want. Here are the four factors that should drive your decision before you ever look at a shape catalog.
How much usable space do you actually have?
Measure your available footprint and subtract setbacks from property lines, fencing, and structures. Most municipalities require a minimum of five feet between a pool and a fence or property line. What remains is your real pool footprint, and it may be smaller than you think.
What is the primary way your family will use the pool?
Lap swimmers and fitness users need length and straight walls. Families with young children prioritize shallow entry, play space, and easy supervision sightlines. Entertainers want open surface area and social features like tanning ledges and built-in seating. Your primary use case should drive your shape more than anything else.
What does the rest of your backyard look like?
A clean, geometric home with a formal landscape pairs naturally with a rectangular pool. A home with mature trees, natural slopes, and organic plantings often looks better with a freeform design that follows the natural flow of the yard.
What features do you want built into the pool?
Tanning ledges, integrated spas, step seating, and swim-up benches are all factors that influence shape. Some features integrate more naturally into certain shapes. A tanning ledge, for example, works on nearly any shape, while a lap lane only makes sense in a rectangular or linear design.
The Pool Shapes: What Each One Is Actually Built For
Rectangular and Modern
Clean lines, maximum swim area, and timeless appeal. The strongest choice for lap swimming, entertaining, and formal backyards.
Freeform
Organic curves that feel natural and relaxed. Ideal for informal backyards, families with young children, and resort-style designs.
Kidney
A classic shape with a concave side that creates a natural deck conversation area. Works well in mid-sized yards with traditional landscaping.
Plunge
Compact, deep, and purpose-built for smaller spaces or homeowners who want a high-end water feature without a full-sized pool footprint.
Rectangular pools are the most versatile shape in the Latham catalog and the most popular choice for Mid-Ohio Valley homeowners for good reason. The straight walls and uniform depth give you the maximum usable swim area for any given footprint, making them the only practical choice if lap swimming or aquatic exercise is a priority.
Beyond fitness, rectangular pools photograph beautifully, age extremely well with virtually any landscaping style, and work naturally with modern decking, pergolas, and outdoor kitchen designs. If you are unsure which shape to choose and your yard has a relatively flat, open footprint, rectangular is almost always the right default.
Within the rectangular category, Latham offers true rectangles as well as modified shapes including grecian (with chamfered corners), roman (with semicircular ends), and true L-shaped pools that add a shallow play zone alongside a deeper swim area. These variations give you the clean geometry of a rectangle with added visual interest or functional depth variation.
Rectangular Pools Are Best For
- Lap swimming and aquatic exercise
- Formal or modern backyard designs
- Maximizing swim area in a defined footprint
- Homeowners who want a timeless look that holds its value
- Yards with a rectangular or linear layout
Consider Something Else If
- Your yard has an irregular shape or significant slope
- You want a natural, lagoon-style aesthetic
Casey's carries over 20 rectangular and modern fiberglass pool models from Latham. Browse the full rectangular pool catalog here to see every size and configuration available.
Freeform pools create a relaxed, natural atmosphere that suits yards with mature landscaping, organic shapes, and a resort-style vision.
Freeform pools use curved, organic shapes that evoke a natural lagoon or tropical resort. They tend to feel less formal than rectangular pools and integrate more naturally into yards with trees, gardens, and uneven terrain.
From a practical standpoint, the curves in a freeform pool create natural shallow areas and gradual depth transitions that many families with young children prefer. The shape also naturally accommodates features like beach entries, rock grottos, and water features that would look out of place in a strict geometric design.
The tradeoff is swim area. Because the walls are curved and the footprint is irregular, freeform pools of the same overall dimensions as a rectangular pool will typically have less usable straight-line swim space. If open swimming and lap exercise are important to you, a freeform shape may feel limiting over time.
Freeform Pools Are Best For
- Families with young children who want gradual depth transitions
- Yards with natural contours, trees, or irregular boundaries
- Homeowners who want a resort or tropical backyard feel
- Designs that incorporate water features, grottos, or lush landscaping
Consider Something Else If
- Lap swimming or fitness is a primary use
- Your yard is small and every square foot of swim area matters
- Your home has a formal or contemporary architectural style
Casey's carries a full range of freeform fiberglass pools from Latham, from compact models to large resort-style designs. View the freeform pool catalog here.
The kidney shape is one of the most recognizable pool designs in American backyard history, and for good reason. The concave indentation along one side creates a natural break in the pool perimeter that works beautifully as a deck conversation area or a spot for outdoor seating positioned right at the water's edge.
Kidney pools sit in a comfortable middle ground between the strict geometry of a rectangle and the flowing curves of a freeform. They have enough visual interest to feel distinctive without looking busy, and they pair well with traditional landscaping and mid-century home styles.
Kidney Pools Are Best For
- Homeowners who want a classic look with timeless appeal
- Yards with a traditional or transitional design aesthetic
- Creating a natural deck seating area adjacent to the pool
- Mid-sized yards where a full rectangular footprint is too large
Worth knowing: Latham offers three kidney-style models through Casey's. It is a smaller selection than the rectangular or freeform catalogs, so if kidney is the shape you are drawn to, it is worth looking at the available sizes early to make sure one fits your footprint.
Plunge pools deliver a full backyard water experience in a fraction of the footprint, making them the fastest growing category in residential pool installation.
Plunge pools are the fastest growing segment of the residential pool market, and the reason is simple. Not every homeowner has the yard space or the budget for a full-sized inground pool, but nearly everyone can accommodate a well-designed plunge pool.
A plunge pool typically ranges from eight to twelve feet wide and fourteen to twenty-one feet long, making them installable in yards that would be impossible for a standard pool. They run deeper than most full-sized pools, which makes them excellent for cooling off, hydrotherapy, and cold plunge use. Many Latham plunge models include built-in step seating, tanning ledges, and swim-up benches that give them a feature set far beyond their footprint.
Plunge pools also install faster and cost less than full-sized fiberglass pools, making them an increasingly popular choice for homeowners who want the backyard experience without the full investment.
Plunge Pools Are Best For
- Smaller yards where a standard pool will not fit
- Homeowners who want a water feature without a large maintenance commitment
- Cold plunge, hydrotherapy, or relaxation-focused use
- A lower-cost entry point into pool ownership
- Pairing with a hot tub or spa for a full backyard wellness setup
Casey's offers Latham plunge pool models including compact rectangular and freeform options. Browse the plunge pool options here to see sizes and configurations.
How to Make the Final Call
If you have read through each shape and still feel uncertain, here is the simplest framework for making the decision.
If your yard is open and relatively flat and you want maximum swim area: choose rectangular. If your yard has character, curves, or mature trees and you want a natural feel: choose freeform. If you love a classic look and want a natural deck seating area built into the shape: choose kidney. If your yard is small or your budget is a priority and you still want a real water experience: choose a plunge pool.
When in doubt, the right move is to have someone walk your yard with you. Dimensions on paper rarely capture how a pool shape will actually feel once it is in the ground and you are standing at the edge of it. That is a conversation we are happy to have at either of our locations.
Our Honest Recommendation
For most Mid-Ohio Valley homeowners with a standard backyard, a rectangular or modified rectangular pool delivers the best combination of swim area, visual appeal, and long-term satisfaction. Freeform pools are the right call when the yard or lifestyle genuinely calls for it, not just because the curves look interesting in a photo. Come talk to us before you decide and we will tell you exactly what we think will work best for your specific space.
More Questions About Pool Design?
Our FAQ page covers pool shapes, sizing, installation timelines, features, and more.
Ready to Find the Right Shape for Your Backyard?
Browse our full catalog of Latham fiberglass pool shapes and sizes, or give us a call to start the conversation. We serve Parkersburg, Belpre, and the entire Mid-Ohio Valley.
Parkersburg, WV: 304-464-1155 | Belpre, OH: 740-315-5055
