If you’re dreaming of installing a swimming pool in your backyard but are worried about the cost, you’re not alone. Pool installation can vary significantly in price, and one of the most cost-effective ways to stay within your budget is choosing the right pool shape. In this article, we’ll explore various pool shapes and analyze which ones typically offer the most affordability without sacrificing your needs. Whether you’re building a new home or renovating your outdoor space, knowing the factors that influence pool costs is essential.
From straight-sided rectangular pools to uniquely curved lagoons, the shape of your pool affects more than just aesthetics—it plays a pivotal role in construction, materials, and long-term maintenance. So, which shape is the cheapest to build? Let’s dive in.
Understanding Key Factors in Pool Costs
Before we determine which pool shape is the cheapest, it’s important to understand that pool costs depend on multiple factors, not just shape. These include:
- Type of pool (in-ground vs. above-ground)
- Materials used (vinyl, concrete, fiberglass)
- Size of the pool
- Accessories and features (like waterfalls, automatic cleaners, and lighting)
- Labor and excavation costs
- Local permits and regulations
However, within the realm of pool shapes, the complexity of construction is the most critical cost factor—since intricate curves, steps, and varying depths mean more labor and materials, thereby inflating the overall price tag. So, we must start by evaluating the most common pool shapes to see how their form translates into real-world cost considerations.
Pricing Breakdown by Pool Shape
Let’s take a look at the most popular pool shapes and examine why some cost more than others:
1. Rectangular Pools – Cost-Effective and Simple
Why they’re budget-friendly: Rectangular pools are by far the most economical to build because of their straightforward design. A simple box shape means quicker excavation, easier coping and tiling, and straightforward concrete or vinyl installation. With straight edges and consistent depths, fewer construction challenges arise compared to other complex geometries.
Cost Factors to Consider
- Excavation: Less time needed for digging and grading
- Structure: Minimized need for complex engineering or formwork
- Materials: Efficient usage of vinyl, tile, or concrete
A typical 16×32 ft in-ground vinyl-lined pool might cost between $25,000 and $40,000 depending on the depth and added features—making it one of the best budget-conscious choices, particularly for families or homeowners looking for a functional backyard feature.
2. Freeform and Curved Designs – High Cost, High Aesthetics
If your backyard feels like a natural oasis, you might be considering freeform or organic pool shapes that mimic the curves of natural bodies of water.
Why they’re more expensive: These pools require custom designs, which means more labor for excavation, specialized concrete or vinyl fitting, and higher landscaping and coping needs. Curved edges also demand more skill and time to waterproof and finish, especially with concrete or vinyl installations.
While visually stunning and ideal for merging into natural landscapes, freeform pools may cost anywhere from $40,000 to $60,000 for an average-sized pool—excluding the extra cost of waterfalls, landscaping, or elevated decking.
3. Oval Pools – Mid-Range Cost with Slightly More Complexity
Oval pools are another popular choice. They offer a curved aesthetic while maintaining a symmetrical structure. This makes them a bit more expensive than rectangles but still quite affordable for those who want more visual flair.
Cost considerations: Although the curve of the oval shape does introduce some additional construction effort—especially related to lining or plastering—the symmetrical nature of the design simplifies many construction components compared with freeform styles.
Typically, oval in-ground or above-ground pools might cost between $30,000 and $45,000 depending on the material choice and accompanying accessories.
4. L-Shaped and Multilevel Pools – Premium Price for Multi-Zone Functionality
L-shaped and multilevel pools are designed for versatility. While these provide both shallow and deep zones, and sometimes even integrated spas or lounges, they also involve more steps, depth variations, and structural support.
Construction complexity: Changes in elevation or built-in benches increase costs due to additional labor, waterproofing requirements, and sometimes advanced engineering, like supporting elevated or tiered structures.
Overall, L-shaped pools generally start at around $40,000 and can easily pass $60,000 with luxury features—making them a great but more costly option.
Which Shape is the Cheapest to Build?
If we were to provide a straightforward answer to the question “What pool shape is the cheapest?”, the answer would be: a simple rectangular in-ground pool or a basic vinyl-liner above-ground pool. Both offer cost advantages due to simplicity and minimal construction labor.
To make this clearer, below is a table comparing the average costs of different shapes for an in-ground pool (standard 16×32 ft size):
| Pool Shape | Material Type | Average Cost Range (In-Ground) |
|---|---|---|
| Rectangular | Vinyl Liner | $25,000 – $40,000 |
| Oval | Vinyl Liner | $30,000 – $45,000 |
| Freeform | Concrete | $40,000 – $60,000+ |
| L-Shaped | Concrete or Fiberglass | $45,000 – $65,000+ |
Why Rectangular Pools Win the Cost Battle
There are multiple reasons why rectangular pools are often the most economical for homeowners:
- Straightforward construction: Reduced complexity of the excavation, forming, and tiling process.
- Lower labor cost: Less time and fewer complications during construction mean lower overall charges from builders.
- Wide accessibility: Many backyard spaces easily accommodate rectangles, eliminating the need for unique engineering.
- Swimming function optimized: These shaped pools also allow for lap swimming and traditional pool games, adding value to their form.
Additional Cost Impacts by Pool Material
It’s also essential to consider how different materials influence cost, even within a specific pool shape. The type of materials used directly affects durability, maintenance, and your initial investment.
1. Vinyl Liner Pools – Most Affordable Option
Vinyl liner pools are often considered the most budget-friendly option, especially when constructing a rectangular or oval pool. While they’re more affordable than concrete or fiberglass, vinyl requires more maintenance over time and usually needs a new liner every 6–10 years.
Pros: Lower initial cost; easier to repair; flexible in design to fit various pool shapes; especially effective for rectangles, which are typically easier to line.
Cons: Liner degradation over time; possible punctures and need for periodic replacement.
2. Concrete (Gunite or Shotcrete) Pools – Higher Cost, Greater Customization
Concrete offers durability and versatility. Because it’s sprayed into a mold, it can accommodate any shape or style. This, however, means extra cost for elaborate designs. Rectangular pools in concrete are more expensive than vinyl but still more affordable than curvilinear designs.
Pros: Extremely durable; customizable; long-lasting (up to 20+ years before resurfacing).
Cons: Higher maintenance due to plaster resurfacing needed every few years; elevated costs for labor, materials, and construction time.
3. Fiberglass pools – Mid-Range with Low Maintenance
Fiberglass is a popular option among homeowners who want a low-maintenance, affordable long-term solution. However, the downside is that the shapes are limited since you’re selecting from an off-the-shelf model. That means if you want a custom shape, fiberglass might not be the right fit.
Pros: Quick installation; low maintenance; excellent resale value.
Cons: Limited design options; delivery and installation costs; more expensive than vinyl in some regions.
Budget Considerations Beyond Shapes
While pool shape plays a major role in affordability, there are additional elements that can affect your final cost. Let’s take a look at a few:
Pool Size
While we’ve focused on the shape of the pool, size also significantly impacts price. Larger rectangular pools will cost more than smaller ones, even if the shape remains inexpensive to build. Choosing a moderate size—such as 16×32 or 18×36 feet—can help keep costs down.
Features & Accessories
Features such as diving boards, LED lighting, infinity edges, and built-in pool heaters can increase the final cost of any shape significantly. For budget-minded homeowners, sticking to basic essentials might be the better route. Adding features later can always be an option.
Geographical Constraints
Topography, soil type, and water table levels can impact installation costs. In some regions, a simple shape like a rectangle could be more expensive due to rocky soil or the need for retaining walls. Always account for local excavation and construction challenges before deciding.
Maintenance Costs
The cheapest pool shape in terms of upfront costs might not always be the cheapest to maintain. For example, vinyl pools may cost less up front but require lining replacements every 6–10 years, whereas fiberglass and concrete offer longer durability but have higher installation costs.
What If I’m Considering an Above-Ground Pool?
Many homeowners are now seriously considering above-ground pools to keep costs low while still enjoying backyard leisure.
Cheapest Above-Ground Shape – Round or Oval
For above-ground pools, the absolute cheapest and most common shapes are round and oval. Why?
- Standardized manufacturing: These shapes are mass-produced and require less customization.
- Easier to install: Typically set on level ground, requiring minimal grading work.
- Accessories and covers readily available: Supporting this shape is easy and budget-friendly.
Average cost for a mid-sized above-ground pool (12–18 ft diameter): $2,500 to $10,000, depending on quality and features. Some ultra-affordable round kits can start as low as $1,500.
Custom Above-Ground Shapes
Some companies now offer more custom shapes in above-ground builds (like octagons or rectangle kits), but the cost increases significantly for these. Again, round and oval remain the most affordable for prefab metal or resin pools.
Tips for Reducing Costs Regardless of Shape
Even if you settle on a premium-shaped pool, there are some steps you can take to keep your costs under control:
Shop Around
Obtain multiple quotes: Get at least three bids from licensed pool contractors in your area. Ask about inclusions like filtration systems, decking, and fencing.
Time Your Installation
Consider having your pool installed during the “off-season” (late fall or early winter). Contractors may offer discounted rates or bundle services during these slower months.
Use a Pool Kit for Above-Ground Pools
Self-install kits can reduce labor costs. While DIY installation involves physical work, the upfront savings can be significant, particularly in simple round or oval above-ground pool kits.
Keep Accessories Simple
Opt for minimal accessories and add features gradually. For example, skip the waterfall now and install it two years down the line when your budget allows.
Maintain a Consistent Depth
Avoid multi-level or varying depth pools unless specifically required. Consistent depth minimizes excavation and structural costs, particularly for in-ground builds.
Final Considerations: Value Versus Cost
While cost is a powerful driver in your decision, remember that pool shapes affect long-term enjoyment and value to your home. Rectangular pools may be the least expensive upfront, but whether curved or angular, a pool’s enjoyment, utility, and appeal should guide your final choice.
It’s also worth consulting with a pool expert or outdoor designer who can give you a clear cost-to-value analysis based on your property, budget, and intended usage. That way, you’ll end up with a pool that’s not only affordable to install but also enriches your lifestyle for years to come.
Conclusion: Choosing the Most Affordable Pool Shape
In summary, if your main priority is cost, the cheapest pool shape is typically a simple rectangular in-ground or a basic round/oval above-ground structure, especially when constructed with vinyl or prefabricated materials. These designs reduce labor, material waste, and construction complexity, all of which help keep your budget low.
However, affordability isn’t the only consideration. Your choice should balance aesthetics, usage needs, maintenance concerns, and resale benefits. If luxury is your goal, a freeform or intricate L-shaped pool might be worth the financial investment—but if you’re primarily focused on backyard recreation within a tight budget, a straightforward rectangle is hard to beat.
By thoroughly understanding the relationship between design, material, and cost, you’ll be well-equipped to select an affordable, stylish, and functional pool that fits your property and lifestyle perfectly.
What is the most affordable pool shape for installation?
The most affordable pool shape for installation is typically a rectangular pool. This design offers clean lines and a straightforward construction process, reducing labor and material costs. Contractors are most familiar with this shape, making it quicker and less expensive to build. Additionally, rectangular pools maximize usable swimming space, which means you get more value for your money from a functionality standpoint.
However, affordability can also be influenced by site conditions and local building codes. If your yard is irregularly shaped or has challenging terrain, a rectangular pool might require extensive excavation or site preparation, which could increase costs. In some cases, an L-shaped or square pool may be cheaper to install if it better fits the natural layout of your backyard. Always consult with a professional to determine the most budget-friendly shape for your specific situation.
Why is a rectangular pool often considered the cheapest shape to build?
A rectangular pool is considered the cheapest shape to build primarily due to its simple geometry. The straight sides and 90-degree angles require less custom work, which streamlines both design and installation. This simplicity reduces the amount of materials needed, including concrete, liner, or decking, and makes it easier for contractors to install fencing and safety covers. As a result, construction time is shorter, which in turn lowers labor expenses.
Additionally, rectangular pools tend to be easier to maintain and more energy-efficient over time. Their shape allows for better water circulation, which reduces strain on filtration systems and can lower chemical usage. These long-term savings make the rectangular design not only affordable to build but also cost-effective to own. Many homeowners opt for this shape as it combines affordability, durability, and practicality.
Can other pool shapes be cost-effective as well?
While rectangular pools are often the most economical, other pool shapes can also be cost-effective, particularly simple geometric designs like square or oval pools. These shapes minimize the number of curves and angles, which helps control construction costs. An oval pool, for example, can sometimes fit better into smaller or oddly shaped yards without increasing expenses significantly.
That said, more free-form or custom designs, such as kidney-shaped or lagoon-style pools, generally cost more. They require more complex engineering, increased material usage, and longer construction times. However, if your property’s layout or landscaping naturally complements a curvilinear shape, it may be worth the additional cost for better aesthetic integration. Choosing a cost-effective shape depends on balancing design preferences and budget constraints.
How does the size of the pool affect the cost of different shapes?
Size plays a significant role in determining the cost of any pool shape. Even a simple rectangular pool can become expensive if it’s large or includes deep ends and varying depths. Conversely, a smaller oval or square pool might be very affordable due to reduced material and labor requirements. When comparing shapes, it’s crucial to consider both surface area and cubic volume as they directly impact excavation, material, and maintenance costs.
Furthermore, increasing the size to accommodate intricate features—like a deep end for diving or a built-in bench—can add to the expense regardless of the shape. If you’re working with a tight budget, sticking to a smaller, shallow pool in a standard shape will be the most economical. Always prioritize your usage needs and budget before deciding on the size and shape to ensure a balanced and affordable choice.
What are the additional costs that can impact the affordability of pool shapes?
Beyond the shape itself, several additional costs can affect the overall affordability of a pool. Features such as a deep end, in-pool seating, waterfalls, and additional filtration systems can significantly increase the total price. Decking materials, fencing, lighting, and landscaping also vary in cost and can influence how much you ultimately spend, regardless of the shape you choose.
Permitting and site preparation costs can also vary widely depending on your location and the complexity of the design. A rectangular pool that fits easily in your backyard may require little prep work, while a custom shape may need more excavation, earthmoving, or grading. These hidden costs can sometimes outweigh the savings from choosing a “cheaper” shape. Therefore, it’s essential to get a comprehensive quote from your contractor that includes all these factors before making a final decision.
Are above-ground pools cheaper than inground pools in any shape?
Yes, above-ground pools are almost always cheaper than inground pools, regardless of the shape. They require less labor, minimal excavation, and fewer materials, making them ideal for budget-conscious homeowners. Round above-ground pools, in particular, are the most affordable and easiest to install, with pre-fabricated kits widely available and simple to assemble.
However, while the upfront costs are significantly lower, above-ground pools may not offer the same durability, aesthetics, or resale value as inground options. They generally have shorter lifespans and may require more frequent maintenance or replacement. For those seeking long-term value and appearance, an inground rectangular pool might be a better investment, especially if you keep design simplicity in mind.
How can I maximize affordability when choosing a pool shape?
To maximize affordability when choosing a pool shape, start by selecting a simple design like a rectangle or square that minimizes complex construction demands. Work with your contractor to assess how your property’s layout aligns with these shapes. Often adjusting your plans slightly to fit the natural contours of your yard can help avoid costly excavation and landscaping work.
Additionally, focus on essential features and avoid luxury add-ons unless absolutely needed. Keep the size moderate, and aim for a shallower design if you don’t require a deep end. Prioritizing practicality and consulting with experienced pool builders can ensure you make a cost-efficient choice that suits your needs and budget. Being clear about your preferences and budget upfront will help guide the builder toward the most affordable pool shape for your home.