12 x 24 ft rectangular pool
pool plan
A full family pool: a shallow end where kids stand and games happen, a proper deep end for diving-free swimming, and enough length that two people can swim without negotiating. This is the most-built size class in private gardens for a reason.
The rectangle is the default for a reason: it gives you the most swimmable water for a given footprint, plays well with modern architecture and lap swimming, and makes covers, solar blankets and automatic cleaners simple. Straight walls also keep formwork and tiling straightforward, which builders appreciate.
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12 × 24 ft — shown to scale
The numbers, computed
- Water surface
- 288 sq ft
- Water volume
- 9,675 gal (40.4 tons)
- Perimeter
- 72′
- Depth
- 3′ 11″–5′ 11″
- Excavation approx.
- 80 cu yd
- Fill time (garden tap)
- 24 hours
- Skimmers needed
- 2×
- Heat pump size
- 44,000 BTU/h
Figures are computed from the sampled pool outline and the plan's depths — the same geometry the 3D designer uses. Excavation includes shell and working allowance; your site conditions may differ.
Also in metric sizes: 7 × 3.5 m
What it costs to build
A rough installed-cost range per construction type, at this size — the pool itself, with basic coping. Not a quote.
| Construction | Installed cost | Note |
|---|---|---|
| Vinyl liner | $34,000–$52,000 | Fastest and least expensive; the liner is replaced every 8–12 years. |
| Fiberglass | $45,000–$65,000 | One-piece shell, quick install; limited to sizes and shapes a mould exists for. |
| Concrete (gunite) | $55,000–$86,000 | Built to any shape or size; the slowest build and the most upkeep. |
Rough 2026 estimates for the pool installed with basic coping — excavation, shell and basic equipment. Excludes deck, fencing, landscaping, heating and permits, all of which vary by site and by builder; get real bids before budgeting from these figures.
Questions about this plan
- How much water does the 12 × 24 ft pool hold?
- About 9,675 gal (40.4 tons of water) at 3′ 11″–5′ 11″ depth — computed from the actual pool outline, not a rule of thumb.
- How long does it take to fill?
- Roughly 24 hours from a standard garden tap (~6.6 GPM). A water delivery service fills it in a few hours.
- Is this size right for my garden?
- The water surface is 288 sq ft; plan roughly 1.5–2× that footprint including the surrounding deck. Open the plan in the designer and set your own deck margins to see the full footprint.
- Can I change the depth or edge type?
- Yes — open the plan in the designer and adjust depths, edge system (skimmer, deck-level overflow or raised), finishes and accessories freely.
- How much does the 12 × 24 ft rectangular pool cost to build?
- Roughly $34,000 to $86,000 installed at this size, depending on construction type — before deck, fence, landscaping, heating or permits. See the cost table above for the range per type.
Similar pool plans
12 × 24 ft · Rounded rectangle
Family pool9,344 gal · 282 sq ft
12 × 24 ft · Oval
Family pool7,648 gal · 225 sq ft
10 × 20 ft · Rectangular
Compact pool6,230 gal · 200 sq ft
Ø 18 ft · Round
Family pool8,576 gal · 254 sq ft
14 × 28 ft · Rectangular
Family pool13,169 gal · 392 sq ft
10 × 40 ft · Rectangular
Lap pool11,977 gal · 400 sq ft
Go on — put a pool in your garden.
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