For homeowners
This is the most asked question in Arizona residential valuation and the one most often answered with a number that was never measured. The honest answer is that it depends on the neighbourhood, and that the method for finding out is more useful to you than any figure somebody quotes.
Put in a pool and you spend what the contractor charges. Sell the house and you recover what the next buyer is willing to pay for it — which is a separate number, arrived at by a separate process, and for most improvements it is lower.
That is not specific to pools. It is true of kitchen remodels, casitas, workshops, solar and almost every other improvement. The exceptions are rare and usually involve fixing something that was actively wrong.
So “my pool cost me X, add X to the price” is not an argument the market recognises. The market only knows what buyers paid.
Nobody can honestly quote you a dollar figure for a pool in Arizona, because the figure is different in Anthem than it is in Sun City, and different again at $400,000 than at $1.2 million.
In parts of the Phoenix metro a pool is close to standard for the price point. When the large majority of comparable homes have one, the market has effectively priced it in — and the practical effect flips. The pool stops being a premium and its absence starts being a discount. A house without one competes against a street of houses with one.
In neighbourhoods where pools are unusual, the buyer pool splits. Some buyers want one and will pay for it. Others see maintenance, higher insurance, higher utilities and a safety concern with small children — and would rather not. When a feature actively repels part of the demand, the premium shrinks and can approach nothing.
At higher price points a pool is more often an expectation than an upgrade, and an expectation that is missing costs more than one that is present gains. At lower price points the running cost weighs more heavily on the buyer, because it is a larger share of what they can afford each month.
A well-maintained, recently resurfaced pool with newer equipment and a sensible layout is a different proposition from one that is twenty-five years old, needs work, and takes up the entire usable yard. Two houses can both be listed as having a pool and be presenting the buyer with opposite situations.
The method is called paired sales analysis, and it is simpler in principle than it sounds. You find sales that are as alike as possible in every respect except the one you are measuring — same subdivision, similar size, similar age, similar condition, similar dates — where one has a pool and one does not. The difference in what they sold for is the market’s answer, for that neighbourhood, at that time.
Do it once and you have an anecdote. Do it across enough pairs and a pattern emerges, and the pattern is what you can rely on. This is also why the answer is local: the pairs from one subdivision do not tell you much about another one eight miles away with a different buyer profile.
This is also the reason a responsible valuation does not publish a fixed rate card for features. A number that is not measured against the sales in front of it is just a number somebody remembered.
“What does a pool add?” invites a made-up figure. The better question is “show me what similar homes with and without a pool actually sold for near me” — because that is a question with a real answer, and the sales exist whether or not anyone bothers to look them up.
Any valuation worth acting on should be able to show you which sales it used and what it added or subtracted for each difference between them and your home. If it will not show you that, it is asking you to take the number on faith.