How to buy a pool service business (due diligence on the route you're acquiring)

A pool route is one of the easier service businesses to buy and one of the easier ones to overpay for. There is an active market of routes for sale, and a clean-looking listing — a full truck, a tidy spreadsheet, a confident monthly-revenue figure — can hide the only question that matters: how much of that revenue keeps arriving after the seller’s name comes off the invoice. Buying well is almost entirely a verification job, and this guide walks the checks that separate a route worth its price from one that quietly bleeds out the month you take over.

What you are actually buying

You are not buying the truck, the poles, the test kits, or the trailer of chemicals — those have a thin used-gear market and you could assemble them in a weekend. You are buying the recurring book: the set of pools already on a schedule, already paying, already in the habit of expecting a specific person each week. Everything you pay above the scrap value of the equipment is a bet that the book holds, so every step below is about testing that bet before you make it rather than after.

That framing also tells you where to spend your diligence hours. Not on counting poles, but on proving the revenue is real, recurring, and transferable, and on standing on the route to see whether a tech who is not the seller can actually keep it. If you have never run a route, read the start-grow-sell pool pillar first so the operating economics — per-visit pricing, chemical cost, route capacity — are familiar before you start reading someone else’s numbers.

Verify the earnings before you trust the multiple

A pool route is priced as a multiple of its seller's discretionary earnings , not its revenue — net profit with the owner’s pay, owner benefits and personal costs, interest, taxes, depreciation, and one-time costs added back. The trap for a buyer is accepting the seller’s SDE figure as given. Most owner-operators run personal expenses through the business and minimize taxable profit, so the add-backs are real — but they are also where a seller pads the number, and an aggressive add-back you do not catch becomes a multiple you overpay.

So rebuild the number yourself. Ask for twelve months of bank statements and the customer ledger, and reconcile the deposits against the accounts so the revenue is proven, not asserted. Then test each add-back: an owner’s salary and genuine one-time costs belong; a “one-time” expense that shows up every year does not. The service profit margin calculator helps you reconstruct a defensible margin from the verified numbers rather than the pitch deck. One pool-specific cut belongs here too: value the route on recurring service revenue only, because the repairs, green-pool recoveries, and retail in the seller’s top-line do not recur for you, and folding them into the base inflates a price you will not be able to finance or resell.

Read the recurring-billing health, not just the revenue

Two routes can show the same monthly revenue and be worth very different prices, and the gap is usually in how the money is collected. Look hard at recurring billing : how many accounts sit on a card or ACH mandate that charges automatically each cycle, versus how many are cash and checks re-collected by hand every visit. Autopay accounts under an assignable agreement transfer cleanly because the obligation runs to the business; hand-collected accounts depend on the relationship and the routine of one departing person, and they are the first to lapse in a handoff.

Do not stop at the share on autopay — read its health. Pull the declined-and-lapsed history: a book where charges quietly fail and get chased is a book with hidden churn baked in. The seller’s stated monthly recurring revenue is only as good as the percentage of it that actually settles. If the accounts are not on a standard monthly plan at all, treat that as work you will inherit, and size what a level monthly figure should be with the recurring plan pricing tool and the pool service price calculator, which builds the processor fee and chemical cost into each account’s rate rather than leaving them as a surprise after closing.

Pull the real churn history

churn rate is the number a seller is most tempted to round down, and the one you most need to get right, because a book that loses accounts each month is worth less on two counts: lower sustainable revenue and a lower multiple, since a leaky route is riskier to take over. Do not accept a quoted churn figure. Reconstruct it from the ledger by counting account starts and stops over the last year or two, and watch for accounts that were “paused” or “seasonal” that are really cancellations dressed up.

Retention is also what tells you the durable value of each account you are buying. The customer lifetime value estimator puts a dollar figure on a kept pool account from its monthly billing and its real tenure — a lens that lets you sanity-check the asking price against what the average account is actually worth over the time it tends to stay, rather than against a headline revenue number that assumes nobody ever leaves.

Drive the route before you price it

This is the step a buyer of a pool route can do that a buyer of most other businesses cannot, and it is the one most often skipped. route density is the value driver you inherit and cannot manufacture: a route whose stops sit a few minutes apart puts more billable pools and fewer windshield hours into a day, so the same revenue on a tight route is genuinely worth more than the same revenue scattered across a metro. A seller will describe the route as tight. Go see for yourself.

Ride the route on a normal service day — same day of week, same season — and time the drives between stops. A spreadsheet cannot tell you that three accounts are forty minutes out and only break even on gas, or that the “clustered” route is clustered only on paper. The route density and stops-per-day calculator turns the drive times you measure on the ground into how many stops genuinely fit in a profitable day, which is the figure you price against — not the seller’s. While you are on the route, you are also doing the next job: looking at the equipment pads and the condition of the accounts you are buying.

Count the chemical and equipment inventory — at cost

The truck, poles, test kits, and chemical stock are part of the deal, but they are a floor, not the headline. Inventory them and value them at what they would cost to replace, not as a profit line, so you are not paying a premium for used gear bundled into a recurring-revenue multiple. Chemical inventory is purely a cost-and-stock item here: count what is on hand, confirm it is stored and labeled to whatever your jurisdiction requires, and price it at replacement cost — nothing about dosing, handling, or application belongs in a purchase negotiation, and a licensed operator handles that side of the business once you own it.

Equipment condition is its own small diligence task, because a pad full of pumps and heaters near the end of their life is a capital bill arriving shortly after you close. Walk the accounts with a structured eye and record what you find — the pool inspection and condition form gives you a consistent way to note equipment age and condition account by account so the deferred-maintenance picture is something you priced in, not something you discover in July.

Seller says, versus what you verify

Almost every figure a seller offers can be checked against a record or the route itself. Reading the table below as a checklist is the point: each row is a claim you confirm with your own eyes before you sign, and the red-flag column is where deals quietly turn from a bargain into a write-off.

Customer transfer risk is the deal’s biggest variable

Everything above feeds the one risk that decides whether you got a good deal: will the customers stay when the person they trust with their pool walks away? Pool service is an on-site, recurring, relationship business — the homeowner hands a stranger the gate code and trusts them with the chemistry of the water their kids swim in — so transfer risk is sharper here than in trades where nobody meets the technician. Three things lower it, and you should price for all three.

• Assignable agreements. Accounts on a written service agreement that assigns to a new owner carry the obligation to the business, not to the seller’s name. Confirm the assignment clause exists; where accounts are handshake arrangements, assume some will leave and discount accordingly.
• A seller transition. The single most effective retention tool is the seller introducing you to customers and riding the route with you for a stretch, lending their name to the change and teaching you the quirks a record cannot hold — which gate sticks, which pool runs hot. A seller unwilling to stay through a transition is telling you something.
• A holdback or earnout tied to retention. Hold part of the price back, or structure an earnout, against the accounts that are still billing some months after closing. It aligns the seller with keeping the book intact and protects you from paying full price for revenue that walks. It also gives the seller a reason to make the introductions count.

License and insurance: you cannot inherit the owner’s

A practical thing buyers miss: much of what makes the seller legal to operate does not come with the route. Licensing and certification for pool service vary widely by state and locality — some require a contractor or pool license, and commercial work often requires a certified operator on staff — so verify what applies with your state’s contractor licensing board, and confirm you can obtain it in your own name before you commit. The Certified Pool/Spa Operator (CPO) certification administered by the Pool & Hot Tub Alliance, for instance, is held by the operator, not transferred with a business — a buyer who needs it earns it themselves. Treat the seller’s licenses and insurance as a checklist of things you must independently re-establish, not assets that ride along in the bill of sale.

Price it, and structure the risk you found

Once you have a verified SDE and a clear read on the book’s quality, the price is that earnings number times a multiple — and the multiple is dominated by exactly the things you just checked: autopay coverage, churn, density, concentration, and transferability. A clean, dense, low-churn book on assignable autopay earns a higher multiple than a scattered stack of cash stops earning the same revenue, which is why the diligence is not a formality; it is the pricing.

What this guide will not do is hand you a multiple, because there is no honest fixed one to print.

So pull current median multiples and sale prices from a marketplace data source like BizBuySell’s quarterly Insight Report for the center of the market, then estimate the specific route. The calculator below — built for pool routes, so this is its native home — turns the recurring monthly revenue you verified and a quality-adjusted multiple into an estimated value with a low-to-high range, the exact multiple, and per-account and months-of-revenue cross-checks that let you sanity the asking price from two independent angles.

A disclosure belongs right next to the button. The calculator is built and given away free by this studio, which is also building Fieldwynn — a field-service app for small pool crews — and we point you toward it because we would benefit if you eventually ran your route there. Fieldwynn isn’t out yet, though: there is no price and nothing to sign up for, only an early-access list you can join to be first when it reaches pool work. For a buyer the connection is concrete — the exportable autopay-and-visit record you spend diligence trying to extract from a seller is exactly the kind of record Fieldwynn is being designed to keep — so the link is a funnel we are owning out loud, not a neutral pick. Run our claims about it through the cited sources, the same as the marketplace multiples.

The figure the tool returns is a negotiating position, not an appraisal — your offer should also reflect what you found on the route, in the ledger, and on the equipment pads. The broader sequence of researching, valuing, conducting diligence on, and closing the purchase of an existing business is laid out soberly in the SBA’s guide to buying an existing business, a good place to start before you involve a broker or an attorney.

A good buy is a verified buy

The difference between a route that pays you back and one that disappoints is settled before closing — in whether you proved the earnings, read the billing and churn health yourself, drove the route, inventoried the assets at cost, and structured the price so the seller carries some of the transfer risk with you. None of it is glamorous, and all of it is where overpaying is avoided. A pool route can be an excellent thing to own; just make sure the book you are paying for is the book you actually get to keep.