10x20 inground pool

10x20 inground pool: size, cost and what it looks like

A 10x20 inground pool is 200 square feet of water with 60 feet of edge, and holds about 6,700 gallons at a 4.5 foot average depth. It is 2.5 fence panels long, and 10x20 is the average small pool in one pool maker's guide. The pool alone runs $20,000 to $50,000 at national planning rates.

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Last updated October 11, 2026

AI concept image of a pool, the closest size we have pictured to a 10x20 and not an exact match: a small rectangular pool in a narrow city backyard with a wood deck all round, two loungers at the near end and a fire bowl by the back porch

AI concept image, not a photo of a built pool.

Water surface: 200 sq ft
Edge: 60 ft
Gallons at 4.5 ft: 6,700
Fence panels long: 2.5
The pool alone, planning: $20,000 to $50,000

The free visualizer has no one-tap preset for a 10x20. Open it and set the length and width to this size.

A 10x20 next to its neighbours, at the same scale

The shaded outline is the 10x20. The others are the sizes either side of it, drawn from the same corner, so you can see what one step adds.

Outlines, smallest to largest: 10x20, 12x20. Every outline starts at the same corner and is drawn to scale. The ticks on the top and left edges are 8 ft fence panels.

A 10x20 is 200 square feet: 2.5 fence panels long and a little over one wide

Ten feet wide and twenty long is the average small inground pool in one pool maker's guide. Twenty feet is two and a half standard eight foot fence panels, and the width is just over one. One pool maker's guide to small pools calls anything of 600 square feet or less small and gives 10x20 as the average, which puts a 10x20 at a third of that ceiling.

The picture is an AI concept image of a 12x24 with a deck all round, the closest size we have pictured. A 12x24 holds about 44 percent more water than a 10x20, so read the yard around it and allow for a shorter, narrower pool. For true proportions use the scale plan on this page.

Length is where a 10x20 gives ground. The same pool maker describes lap-focused small pools as 20 to 28 feet long and says laps need four to five feet of depth, so a 10x20 sits at the bottom of that range: room for a few strokes and a turn, not a place to train.

A 10x20 suits a couple or a small family in a tight yard, and the yard is the real limit

One California pool builder's size guide says pools from 10x20 to 12x24 work in yards where space is limited, and suit couples or small families who want a pool without it dominating the landscape. It also expects lower excavation costs in that range, which is a reason small pools appeal on a tight budget as well as a tight lot.

The quarter-of-the-yard rule from one pool maker puts a 10x20 in a yard of about 800 square feet. The same California guide recommends at least 6 feet of clear space all round the water, which turns the footprint into 22 by 32 feet, or 704 square feet. On a yard that small the two rules pull against each other, so measure the lawn and ask your town about setbacks before you fix a size.

Pool guides list steps, a built-in bench, lights and a spillway among the things small pools can carry. A diving board is not one of them: one guide says a board needs at least 8 feet of depth, and a small pool is usually no more than 5 or 6 feet deep. See small yard pool ideas for designs built around a tight lot, and the small inground pools guide for the sizes either side of this one.

A 10x20 is priced by the job as much as by the foot, so the low end is a floor

At published per-square-foot rates a 10x20 comes out below the floor we apply to a small concrete pool, so the low end of the planning range is that floor, the floor we apply to a small concrete pool, set from the low end of a plunge pool cost guide. A very small pool is priced by the job, not by the foot.

The table prices the pool alone, then coping, a four foot deck border and a fence, so you can see which lines a quote includes. It leaves out permits, engineering, a heater and a cover. Real quotes vary with your town, soil and access, so treat the range as a list of questions, not a prediction. The cost page lists the same lines for any size, and what it costs to run a pool each year.

If a 10x20 feels tight, the next step is a 12x20, which keeps the length and adds two feet of width, or a 12x24 at 288 square feet. We re-read the two size guides this page leans on on October 11, 2026.

Planning cost lines for a 10x20 inground pool at national rates
Line	Planning range
The pool200 sq ft of water at $90 to $250 a square foot (shell, excavation, plumbing, equipment, plaster).	$20,000 to $50,000
Coping60 linear ft of water edge at $6 to $55 a foot, from plain concrete to travertine.	$500 to $3,500
A 4 ft deck border all round304 sq ft at $3 to $80 a square foot installed, from pavers to composite decking.	$1,000 to $24,000
Aluminum pool fence around that deck92 linear ft at $15 to $35 a foot installed.	$1,500 to $3,000
All of the above, if your quote includes it	$20,000 to $85,000

A planning range from published sources, not a quote. National rates; a state, a lot and the build type can move them a lot more than a few percent. Totals are rounded down and up to the nearest $5,000, so they will not match the sum of the lines. We price a 4 ft deck border; the builder size guide we cite suggests at least 6 ft clear around the pool, which adds deck and fence cost. The per-foot band is quoted for a standard pool and used here for every size. Left out: permits and engineering, land clearing, landscaping, electrical beyond the pool equipment, a heater, a cover, financing and overruns. Rates from: HomeAdvisor, in-ground pool cost, Fixr, gunite and concrete pool, Pool Research, plunge pool cost, Pool Research, pool coping cost, HomeAdvisor, travertine pavers, HomeAdvisor, pool deck cost, Fixr, pool fence.

More on size: the full inground pool size chart, what size pool do I need. Smaller still? Small inground pools compares the four smallest sizes.

A design in the nearest size we have drawn: Family pool with an outdoor kitchen in an Irvine subdivision.

Pricing the whole job? Inground pool cost, line by line covers every line a 10x20 quote should carry.

Building in Florida, Texas, Arizona or California? Each has a Florida, Texas, Arizona, or California cost page with the state's price range, pool safety law and builder licensing.

See a 10x20 in your yard with the free visualizer.

Will a 10 x 20 fit your yard?

Draw your yard and the house, drop a 10 x 20 in, and see the distance to every fence. It is drawn to scale and free.

Try a 10 x 20 in my yard

Questions people ask

How many gallons is a 10x20 pool?

About 6,700 gallons at a 4.5 foot average depth, or 6,000 to 7,500 at 4 to 5 feet. One California builder's guide gives 10,000 to 12,000 gallons for the whole 10x20 to 12x24 range without stating a depth, so its figure sits above ours for the smallest size.

Is a 10x20 inground pool big enough?

For cooling off, sitting and a few strokes, yes. It gives 200 square feet of water, which one California builder's guide says suits couples or small families. It is short for lap swimming. Mark it out on the lawn, and if the yard allows, mark a 12x20 beside it.

How much does a 10x20 inground pool cost?

The pool alone comes to $20,000 to $50,000 at national planning rates, and with coping, a four foot deck border and a fence the range reaches $20,000 to $85,000. The low end is the floor we apply to a small concrete pool. Ask local builders for itemised written quotes. See inground pool cost, line by line.

How much yard does a 10x20 pool need?

By the quarter-of-the-yard rule, about 800 square feet. With 6 feet of clear space all round, as one California guide recommends, the footprint is 704 square feet. Setbacks vary by town, so ask your building department.

Sources and date checked

Links checked October 11, 2026. If one has moved or no longer says this, tell us (see our editorial policy) and we will fix it.

Every picture on these pages is an AI concept image, not a built pool, and its proportions are not measured. Where a size has no picture of its own we show the closest one and say so in the text. Cost ranges are planning numbers from published guides at national rates, not quotes. See how we write and check pages in our editorial policy.

This page is about inground pools. A 12x24 or a 15x30 is also a common above-ground oval, which is a different product at a different price.

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