In today’s competitive housing and outdoor remodeling markets, an increasing number of homeowners are investing in backyard pools to enhance lifestyle, property value, and energy efficiency. However, cost remains a significant concern. One of the most underestimated variables affecting pool price is the shape. Contrary to popular belief, not all pool shapes are created equal when it comes to budget-friendliness.
In this article, we’ll explore which pool shape is the cheapest, analyze the factors behind cost variations, and compare different pool styles to help you make a value-driven decision. By the end, you’ll understand not just which shape saves money—but why.
Understanding How Pool Shape Affects Cost
Before we identify the cheapest pool shape, it’s essential to address key cost drivers related to design:
- Construction complexity: Custom shapes often require more labor and specialized materials.
- Materials required: The overall surface area and edge complexity impact how much concrete, liner, or tile is needed.
- Excavation and groundwork: Curved or uneven designs may increase the expense of digging and leveling.
- Maintenance costs: Some shapes are more energy- and chemical-efficient than others.
Because of this, pool shapes that are straightforward to design and build tend to be the most affordable. The difference in cost between shapes can add up to thousands of dollars—even without major equipment variations.
The Cheapest Pool Shape: Rectangle
Why Rectangles Offer the Best Value
In most cases, a rectangular pool is the most budget-friendly pool shape, particularly in in-ground and concrete builds. Its clean lines and symmetrical structure minimize the construction complexity, labor usage, and material waste that go into more ornate designs.
For example, a standard 8×4 meter (roughly 26×13 feet) rectangular pool can be dug quickly and efficiently, and the structural design ensures even distribution of pressure—reducing long-term maintenance and structural concerns.
The Science Behind the Savings
When comparing rectangular pools with others like freeform, L-shaped, or kidney shapes, you’ll find:
| Pool Shape | Approximate Relative Cost (vs. Rectangle) | Construction Notes |
|---|---|---|
| Rectangle | 100% | Simple lines, fast build, standard excavation tools work well |
| Freeform | +10–25% | Complex curves increase labor and materials |
| Kidney | +15–20% | Built with concrete or fiberglass; often less efficient for swimming |
| L-shaped | +5–10% | Requires additional structural support |
From this data, it’s easy to see that rectangles offer a baseline of affordability, especially when designed in a traditional lap-pool or recreation-focused layout.
Design Implications of Going Rectangular
While cost is king, design considerations must also be addressed. Rectangular pools don’t inherently compromise aesthetics. By adding features like:
- Geometric tiling accents
- Modern coping stones
- Concrete pavers for decking
…you can transform the pool from “basic” to “beautiful,” all while keeping the initial budget intact.
Comparing Pool Shapes by Cost
To get a clearer picture, let’s break down the primary pools by shape and how much you can expect to pay.
1. Rectangular Pool
As previously established, rectangular pools are the cheapest in both in-ground and above-ground applications. For concrete in-ground builds, the average range is $30,000 to $50,000—depending on size, depth, and edge features. Fiberglass versions can start as low as $20,000.
2. Freeform/Kidney Shaped Pool
These organic, curvilinear pools mimic natural bodies of water and provide an aesthetic benefit. However, they come at a cost:
- Concrete freeform pools: $45,000–$80,000+
- Custom fiberglass varieties: $30,000–$50,000
Carping around the perimeter, custom tile work, and advanced excavation techniques raise the cost, even without a larger surface area.
3. Oval Pool
Ovals split the difference between rectangles and full freeform pools in terms of construction. They are:
- More material-efficient than kidney shapes
- Slightly more complex than rectangles
This balance positions them in a medium price category, typically around 10–15% more than rectangular models.
4. L-shape Pool
This design suits properties with space constraints and offers more recreational space by dividing swim zones. Construction-wise, corners need careful reinforcement, increasing concrete volume and labor.
L-shaped pools usually cost:
- From $40,000–$65,000+, depending on corner complexity and filtration setup
Factors Beyond Shape That Influence Cost
Knowing the cheapest pool shape is valuable, but it’s also essential to recognize that a pool isn’t a one-dimensional purchase.
Below are the top cost influencers outside of design shape:
Location and Terrain
Poor soil, compacted land, or sloped environments require extra groundwork such as soil stabilization, retaining walls, or even blasting rock. This can escalate costs regardless of pool shape.
Materials and Finish
Choosing between vinyl, fiberglass, and concrete has a dramatic effect on cost:
| Material | Average Cost (In-Ground) | Pros | Cons |
|---|---|---|---|
| Concrete | $30,000–$80,000+ | Durable, customizable | High maintenance and cost |
| Fiberglass | $20,000–$55,000 | Low maintenance, faster installation | Limited design flexibility |
| Vinyl | $25,000–$50,000 | Affordable, customizable shape | Liners require replacement every 5–9 years |
Even the cheapest shape can become expensive if high-end finishes like glass tiles or quartz decking are selected.
Equipment and Add-Ons
Essentials like:
- Heaters (solar or gas)
- Water features (fountains, spas, waterfalls)
- Pool lighting and smart systems
…can drastically alter the total installation price. So while your rectangular shell might be low-cost, don’t be surprised if the total jumps with premium add-ons.
Cost-Saving Tips When Building a Pool
Even with the cheapest shape, you can maximize your budget by implementing strategic design choices.
Maximize Pre-Fabricated Elements
When choosing vinyl or fiberglass pools, sticking to standard mold sizes can reduce expenses. Custom cuts increase costs significantly.
Plan Around Existing Landscape Features
Excavation is a major cost in in-ground pools. If you design around large tree roots, level areas, and flat zones, you avoid the expense of moving earth or building retaining walls.
Opt for Simpler Edges and Decks
Straight-line decking materials like concrete pavers or pressure-treated wood are often much cheaper than curved stones or premium tiles. You can still add visual flair with lighting or landscaping.
Limit the Number of Entry Points
Every extra step, access ladder, or curved handrail multiplies labor cost and design time. Aim for practical entries along safe zones.
When Is a Cheaper Shape Not the Best Option?
Although this article establishes rectangles as the cheapest shape, they may not always be the best fit. In sloped backyards or uniquely shaped gardens, a freeform design might offer better integration and minimize site preparation costs.
Likewise, some homeowners—particularly those in entertainment-centered neighborhoods—prioritize aesthetics over savings. In these cases, paying 15–20% more for a freeform or L-shape may make the design more attractive and desirable for resale purposes.
Rectangular Pools: Pros and Cons Recap
| Pros | Cons |
|---|---|
| Affordable to install | May feel geometric and boring to some |
| Ideal for lap swimming and fitness | Limited visual flexibility |
| Easy cleaning and efficient filtration layouts | Could be challenging in odd-shaped yards |
What About Above-Ground Pools?
While the rest of the article focuses on in-ground builds, above-ground pools deserve attention for budget-first buyers:
Popular Shapes and Prices
- Round pools: Often the most affordable due to their circular symmetry, starting around $2,000 for 12–16 ft versions.
- Oval pools: Priced slightly higher, usually $3,000–$5,000, with better space usage for lounging or wading.
Round-shaped above-ground pools remain the cheapest because of standardized construction across major brands like Intex, Bestway, or Hayward.
The Final Word: Rectangles Rule the Budget Pool Market
So, is there an undisputed answer to, “What shape pool is the cheapest?” In most backyard configurations and construction budgets, yes—rectangular pools offer the most affordable route. From reduced labor to easy equipment layout and long-term pool maintenance, the rectangle shape’s advantages stack up in more than just financial terms.
Before jumping headfirst into construction, homeowners should always weigh both economic constraints and aesthetic preferences. But if your primary goal is minimizing cost with minimal compromise, the rectangle shape pool stands out as a strong—and smart—investment.
Whether starting from scratch or remodeling an outdoor space, smart design includes budgeting well. By understanding how pool shapes affect cost and which styles provide optimal value, your dream pool becomes more than a fantasy—it becomes a well-planned reality.
Next Steps
Ready to begin your pool construction journey? Here’s how to take it further:
Contact reputable pool contractors in your area and ask for transparent quotes comparing rectangular vs. alternative designs. Review local zoning and permitting laws if you’re considering a large structure. And, most importantly, factor in both short-term costs and long-term enjoyment before you commit to any pool shape or style.
What shape of pool is the cheapest to install?
The cheapest pool shape to install is typically a basic geometric shape such as a rectangle or square. These designs allow for the most efficient use of materials and labor, as they are straightforward to construct. Rectangular pools are especially common in above-ground installations and can also be more affordable in in-ground models due to simpler excavation and structural support requirements.
Additionally, pools with fewer curves and intricate designs reduce construction complexity, lowering overall costs. Simple shapes are easier to fit with prefabricated components such as liners, filters, and coping, which further cuts down on both material and installation expenses. For homeowners looking to minimize upfront costs, choosing a standard rectangular shape is often the most budget-friendly option without sacrificing functionality.
Why are geometric pool shapes more affordable than freeform ones?
Geometric pool shapes—such as rectangles, squares, and ovals—are more affordable because they minimize construction waste and labor time. Since these shapes are predictable and uniform, contractors can use standardized materials and techniques, which streamline the building process. This efficiency is especially notable when installing vinyl-lined or concrete pools, where cutting and fitting materials precisely can significantly impact overall expenditures.
In contrast, freeform or irregularly shaped pools often require more customized planning, additional engineering, and extensive excavation. Curved edges and unique contours increase the complexity of installing supports, plumbing, and finishes. The higher demand for skilled labor and custom-tailored components, such as pool covers and liners, further drives up the cost, making geometric shapes a more cost-effective choice for budget-conscious buyers.
Can an above-ground pool be considered a cost-effective option?
Yes, above-ground pools are widely regarded as a cost-effective option for homeowners seeking an affordable way to enjoy a backyard pool. The installation costs are significantly lower than those of in-ground pools because they require minimal site preparation, no extensive excavation, and simpler structural support. These pools come in standard shapes like round or oval and can be set up relatively quickly, which helps reduce labor expenses.
However, even among above-ground models, certain shapes may offer better cost savings than others. Round above-ground pools tend to be the most affordable since their uniform design fits standard kits. Rectangular above-ground models, while still cheaper than in-ground versions, may carry a slightly higher price tag due to more complex framing and support systems. For the most economical option, sticking with a round or oval above-ground pool is recommended.
How does the pool shape affect long-term maintenance costs?
The shape of a pool can influence long-term maintenance costs in several ways. Simpler shapes such as rectangles or ovals typically have more predictable water circulation and easier cleaning access, which can reduce chemical usage and maintenance time. With fewer hard-to-reach corners or irregular surfaces, automatic pool cleaners and filtration systems operate more efficiently, lowering overall upkeep costs.
On the other hand, pools with complex shapes or sharp curves may require more manual cleaning and can experience uneven water flow, potentially leading to algae buildup in stagnant areas. These challenges can result in increased chemical use and additional labor for cleaning. Therefore, while the initial installation cost of a geometric pool might be lower, maintenance savings make such shapes an even more economical option over the lifetime of the pool.
Are prefabricated pool shapes more affordable than custom-built ones?
Prefabricated pool shapes are generally more affordable than custom-built pools due to the use of standardized materials and simplified installation processes. Rectangular, oval, and round pools often come as part of pre-engineered kits that include liners, filters, and other essential components, which allows for faster and more cost-efficient installation. The predictability of these shapes also means contractors can avoid time-consuming adjustments, reducing labor expenses.
Custom-built pools, while offering unique design flexibility, require additional planning, engineering, and often specialized materials to create unique shapes. These modifications not only increase the upfront installation cost but can also lead to higher long-term maintenance expenses. For those seeking a budget-conscious option that still meets most functional needs, choosing a prefabricated pool shape is often the smarter investment.
Do irregularly shaped pools affect landscaping and surrounding deck costs?
Yes, irregularly shaped pools can significantly affect the cost of landscaping and surrounding deck installations. These designs often require more custom work to integrate seamlessly with the yard and outdoor living space, which increases labor and material costs. Curved edges or unique contours may also necessitate specialized decking materials, custom-cut tiles, and extra time for contractors to ensure a cohesive and polished appearance.
In addition, working around an irregular pool shape can limit the use of prefabricated elements or modular decking systems, which are more cost-effective and easier to install around geometric pools. Simple shapes allow for straightforward deck designs and more efficient use of green space, often reducing the overall expense of transforming the backyard into a complete outdoor oasis. This makes traditional pool shapes more advantageous for overall property budgeting.
What budget-friendly options exist for homeowners who prefer a custom look?
Homeowners who desire a custom look but are working within a budget can explore hybrid designs that combine geometric shapes with minor aesthetic enhancements. For example, a rectangular pool with a slightly curved end maintains a simple structure while offering a touch of uniqueness. Another option is the use of decorative tiling, coping, or landscaping to give a standard shape a more distinctive visual appeal without incurring custom build costs.
Another cost-saving approach is to choose a fiberglass pool with a pre-molded shape that mimics the appearance of a custom design. Fiberglass models offer a wide range of designer options that are both durable and easier to install than concrete alternatives. These pools maintain the appearance of a luxury design while providing significant savings in installation time and cost, allowing homeowners to enjoy the look they want without the high expense of full customization.