What this measures
A car wash is valued on the cash it earns, not the cars it washes. So the calculator builds revenue from retail washes times the average ticket, the unlimited membership club, and add-ons and other income, takes off chemicals, utilities, labor, repairs, rent, and the rest, and adds back owner perks and one-time costs to reach SDE.
The membership club gets its own math. Members are billed every month, some cancel, and new ones sign up. The calculator runs the next 12 months month by month, so a club that is losing members shows less revenue than today's member count suggests, and it shows how many sign-ups a month it takes to hold the club flat.
Value is SDE times a multiple range you type, then minus the equipment and repairs due in the next few years. The multiple assumes working equipment, so a worn conveyor or dryers come off the value rather than adding to it. Land and a building, if included, are valued on their own market rent and cap rate and are never multiplied by SDE.
Formula
Retail revenue = retail washes × average ticket. Membership revenue = the sum of members billed in each of the next 12 months × the monthly price, where each month's members = last month's × (1 − cancel rate) + new sign-ups. Total revenue = retail + membership + other. SDE = total revenue − expenses + add-backs, with the owner's pay, loan interest, and depreciation left out of expenses.
Value = SDE × multiple, at your low, midpoint, and high multiples. Value after equipment = value − equipment and repairs due soon. Land and building = market rent ÷ cap rate, when included. Asking SDE multiple = (asking price − land and building) ÷ SDE. Sign-ups to hold the club flat = members × monthly cancel rate.
Loan = asking price × (1 − down payment %), fully amortizing at your rate and term. Cash flow for debt = SDE − manager cost, plus the market rent when you also buy the land. DSCR = cash flow for debt ÷ yearly debt service. Largest price this cash flow covers = the loan that cash flow covers at your minimum DSCR, divided by (1 − down payment %).
Example
Example
The sample express tunnel sells 30,000 retail washes a year at a $14 average ticket, $420,000, and has 1,500 unlimited members at $30 a month. 4% cancel each month and 60 sign up, exactly enough to hold the club at 1,500, so the club brings in $540,000 over the next 12 months, 55.1% of revenue. With $20,000 of add-ons and other income, revenue is $980,000. Rent is $150,000 (15.3% of revenue), chemicals $70,000, utilities $80,000, paid staff $190,000, repairs $55,000, insurance $25,000, card fees, software, and marketing $45,000, and other costs $25,000, for $640,000 of expenses. With $5,000 of add-backs, SDE is $345,000, a 35.2% margin. At 3.5x to 4.5x SDE the wash is worth $1,207,500 to $1,552,500, and after $100,000 of equipment due soon, $1,107,500 to $1,452,500, with a $1,280,000 midpoint. The $1,350,000 ask is 3.91x SDE, inside that range. With 10% down and a $1,215,000 loan at 10.5% over 10 years, the payment is $16,394.60 a month, or $196,735.23 a year. A $65,000 manager leaves $280,000 of cash flow, a 1.42 DSCR. SDE is $345,000. Midpoint value after equipment is $1,280,000. Asking SDE multiple is 3.91x.
Illustrative example. Every input is a sample so the math is visible, not a real wash, a market average, or a deal RE Underwrite Lab did, and the 3.5x and 4.5x multiples are example inputs. After debt the example keeps $83,264.77 a year on $260,000 of cash in (down payment, $25,000 of closing costs, and the $100,000 of equipment), a 32.0% cash-on-cash return. At a 1.25 minimum DSCR, $280,000 of cash flow would cover a loan on a price of about $1,537,091. That is an illustration of coverage, not a bid or a loan offer. The guide to valuing a car wash walks the same numbers line by line.
What moves a car wash's value
The membership club. Monthly members are recurring revenue, but only if they stay. Get monthly member counts, sign-ups, and cancellations for at least two years from the wash software, and check them against the card processor's deposits.
The wash type. An express tunnel, a full-service wash, an in-bay automatic, and self-serve bays have different labor, throughput, and buyers. Compare a wash only with sales of the same type.
The equipment. The conveyor, brushes or cloth, dryers, pumps, water reclaim, and pay stations wear out. Price what needs replacing and enter it as equipment due soon instead of raising the multiple.
The land. Many washes sit on land the seller owns. Charge the wash a market rent, value the land and building on that rent and a cap rate, and add them to the business value. The calculator does that instead of applying an SDE multiple to the whole price. When you buy the land, add that market rent back to cash flow for the loan, because you are no longer paying a landlord.
Example
Second example
Illustrative example. An in-bay automatic with self-serve bays and no membership club sells 26,000 washes a year at a $9 average ticket and takes in $6,000 more from vending, for $240,000 of revenue. The seller is also selling the land and building. Expenses, with $36,000 of market rent, are $144,000, so SDE is $96,000. At 3x to 3.5x SDE the business is worth $288,000 to $336,000, or $238,000 to $286,000 after $50,000 of equipment due soon. The land and building, valued at the $36,000 market rent and an 8% cap rate, are worth $450,000, so business midpoint plus real estate is $712,000. The $750,000 ask leaves $300,000 for the business, 3.13x SDE and above the range after equipment. These figures are made up. They are not the sample in the form above.
When this ratio misleads
A multiple of SDE hides how the SDE was built. A seller's SDE may count members who already canceled, leave out repairs a buyer will pay, use a below-market rent on land the seller owns, or skip the cost of someone running the site. A big membership count also hides churn: a club losing more members each month than it signs up is worth less every month. And a revenue multiple is only a cross-check, because labor, rent, and chemicals take very different shares of revenue from wash to wash. Rebuild the SDE from the tax returns, the wash software, the card processor, and the utility bills before you trust any multiple.
Common pitfalls
Valuing the club on today's member count. Run the next 12 months with the real cancel and sign-up rates.
Adding equipment value on top of the SDE multiple. The multiple already assumes working equipment. Subtract replacements due soon instead.
Applying an SDE multiple to the whole price when the land is included. Value the real estate on its own market rent and cap rate.
Using a multiple quoted on EBITDA as if it were an SDE multiple, or underwriting a loan on SDE when you plan to hire a manager.
Questions
How do you value a car wash?
Most single car washes are valued as SDE times a multiple, adjusted for the wash type, the membership club, the equipment, and the lease or land. Rebuild SDE from the tax returns and the wash software, apply a multiple range from recent sales of similar washes, subtract equipment due soon, and value any land separately.
How much is a car wash worth?
It depends on the cash it earns. In the example, $345,000 of SDE at 3.5x to 4.5x points to $1,207,500 to $1,552,500, or $1,107,500 to $1,452,500 after $100,000 of equipment due soon. The multiples are example inputs, not market data.
How do unlimited memberships change a car wash's value?
Members are billed every month, so the club can make revenue steadier. What matters is whether it holds. In the example, 4% of 1,500 members cancel each month, so the wash needs 60 sign-ups a month just to stay flat.
Is the land included in a car wash's value?
Not in the SDE multiple. If the land and building are part of the sale, value them separately, on the market rent the wash would pay and a cap rate, and add them to the business value. This calculator does that when you check the box. When you buy the land, add that market rent back to cash flow for the loan, because you are no longer paying a landlord.
Can I get an SBA loan to buy a car wash?
Many buyers use bank or SBA 7(a) loans. The SBA says 7(a) terms are generally 10 years or less unless the loan finances real estate or long-lived equipment, with up to 25 years for real estate. The lender sets the rate, down payment, and DSCR.
Is this an appraisal or a business valuation?
No. It is arithmetic on the numbers you type. It does not know the market, the site, the equipment, or the books. Use a business broker, a CPA, a lender, and an attorney before you buy.