Valuing a Shop You're Buying: The Buyer's Side
Why this matters
Every seller has a number in their head, usually anchored to what the business means to them personally rather than what it is worth to a buyer who did not build it. Your job as the buyer is to arrive at an independent number grounded in the business's actual earning power, then negotiate from there. Overpay and you spend years working off a purchase price instead of building equity. Underbid without a real basis and you lose a good business to someone who did their homework better. Valuation is not a feeling, it is a calculation you can defend.
Start from earnings, not revenue
Revenue tells you how much money moved through the business. It does not tell you how much of that the owner actually keeps. Valuation for a small service business almost always starts from a normalized earnings figure, commonly called Seller's Discretionary Earnings (SDE): the business's true profit plus the owner's salary and benefits, plus any personal expenses run through the business, plus one-time or non-recurring costs.
- Build SDE yourself from the raw records, not from a summary the seller hands you. Every add-back the seller claims should be traceable to an actual line item.
- Question every "one-time" expense. A repair that shows up every other year is not one-time, it is a recurring cost of owning that equipment.
- Normalize owner pay to market rate, not what the seller happened to pay themselves. If the seller was underpaying themselves to inflate apparent profit, correct for it.
Apply a multiple, and know what moves it
Small service businesses typically sell for a multiple of SDE, and that multiple is not fixed. It moves based on specific, checkable factors:
| Factor that raises the multiple | Factor that lowers the multiple |
|---|---|
| Recurring revenue (service agreements, contracts) | Revenue concentrated in one-off jobs |
| Diversified customer base | A few customers driving most of revenue |
| Trained staff who stay after the sale | Business runs entirely on the owner's personal relationships |
| Documented systems and processes | Everything lives in the owner's head |
| Growing revenue trend | Flat or declining trend |
| Modern, well-maintained equipment and fleet | Equipment near end of life, deferred maintenance |
| Transferable licenses and clean compliance history | Licensing gaps or unresolved compliance issues |
A shop heavy on the left column of this table commands a materially higher multiple than one heavy on the right, even at identical current earnings, because the buyer is paying for a business that keeps running without the seller in it.
Adjust for what you are actually buying
Two shops with identical SDE can be worth very different amounts depending on deal structure and what is included:
- Asset sale versus entity sale. An asset purchase (you buy the trucks, tools, customer list, goodwill, but not the legal entity) usually carries different risk and tax treatment than buying the company itself, including its liabilities. Confirm which structure is on the table early, since it changes both the price and what you are exposed to.
- What is included in the price. Vehicles, equipment, and inventory may be included in the headline number or priced separately. Get an itemized breakdown before comparing multiples across different deals.
- Real estate. If the business owns its building, that is a separate asset with its own valuation logic, not part of the operating business multiple.
- Working capital. Confirm whether accounts receivable and outstanding customer deposits transfer to you or stay with the seller. A business sold without its receivables is worth less to you on day one, cash-wise, even at the same multiple.
Sanity-check your number
Once you have a figure, stress-test it before you commit:
- Would this business support the debt service if you financed most of the purchase? If normalized earnings cannot comfortably cover loan payments plus a reasonable owner draw, the price is too high for the financing structure.
- What is your payback period at this price? Compare the number of years of earnings it takes to recover the purchase price against how long you actually expect to hold and grow the business.
- What would you pay to start this business from zero and grow it to its current size? If your valuation exceeds a reasonable estimate of that cost plus a premium for time saved and risk avoided, revisit your assumptions.
Use a professional to confirm, not to replace your own work
An accountant or a business valuation professional experienced in small service businesses can validate your SDE build and multiple assumptions against comparable sales they have seen. Their job is to pressure-test your number, not hand you one from a formula sheet, since every shop's mix of recurring revenue, staff, and equipment condition is different.
References
- International Business Brokers Association (IBBA), small business valuation standards
- U.S. Small Business Administration (SBA), valuing a business you want to buy
- SCORE, understanding seller's discretionary earnings
- See related: Due Diligence Checklist Before Buying a Shop, Seller Financing: What It Means for a Buyer