“I have discussed pricing on carwashes and this is mostly geared towards self serve. Tunnels and ES have other quick figures to get to a starting price.”
This assumption introduces bias into calculation of value.
Assume Wash-A full-service tunnel, Wash-B express tunnel and Wash-C self-serve with in-bay each generates net operating income of $150,000.
This implies gross sales of $250,000 SS, $300,000 express and $428,600 FS.
8.5 X NOI = $1.275 million each for SS, express and FS
3.5 X sales = $875K SS, $1.05 million express and $1.5 million FS
Evidence of bias is the approaches produce different results.
This is why using rule of thumb is sketchy at best and often leads to exaggerated expectations of value or worth.
This is one reason most brokers and consultants begin calculation of value by determining the available free cash flow (ACF) in the business.
The value assigned to ACF should reflect the risk associated with the continued operation of business with recent, proven financial results that can be reasonably be expected to continue after the sale.
Clearly, rule of thumb does not embody this notion.
So, my advice is to engage a professional to help determine a realistic price.
The purpose of opinion or calculation of value is to determine a price that will result in an exchange of ownership of property which is different than the purpose of a summary property appraisal.