How to calculate RV park NOI — the number that determines your sale price

Net operating income, NOI, is the single number that determines what your RV park is worth to a buyer. When we sold Blue Quail RV Park in Moore, Texas, every serious buyer conversation came back to the same question: what is the NOI, and can you prove it? Most small park owners we talk to cannot answer either part cleanly. This post walks through the calculation step by step, in plain terms, the way a buyer will run it.

What NOI is and why buyers care

NOI is your park's total operating income minus its operating expenses, before debt payments and before income taxes. It answers one question: how much cash does this property produce from operations in a year, regardless of who owns it or how they financed it.

Buyers care because commercial properties are priced as a multiple of NOI. A buyer takes your NOI, divides it by the capitalization rate they think the deal deserves, and that is their price. Small errors in NOI become large errors in price, which is why buyers scrutinize every line and why sloppy books cost sellers real money.

Step 1: add up gross operating income

Start with everything the park actually collects in a year. For a typical RV park that includes:

• Lot rent from monthly and long-term tenants
• Nightly and weekly stays from travelers
• Utility reimbursements, such as metered electric billed back to tenants
• Late fees and pet fees
• Laundry, propane, storage, and other ancillary income

Use collected income, not theoretical income. If your rate sheet says a pad rents for a certain amount but it sat empty half the year, the empty half does not count. Buyers will also apply a vacancy allowance to whatever you show them, so an honest collected number holds up better than an inflated potential number.

Step 2: subtract operating expenses

Now subtract everything it costs to operate the park in a normal year:

• Property taxes and insurance
• Utilities the park pays: electric, water, sewer, trash, internet
• Repairs and routine maintenance
• Landscaping, mowing, and pest control
• Management and payroll for anyone who runs the park
• Software, bookkeeping, bank and card processing fees
• Marketing and listing costs

The goal is a complete and honest picture of what it costs a normal owner to run the property. Leaving expenses out does not fool anyone; it just tells a buyer your books cannot be trusted, and they will rebuild the expense side with their own, less generous assumptions.

What to leave out of NOI

Three categories do not belong in the calculation, and mixing them in is the most common mistake we see:

• Debt service. Your mortgage payment is a financing choice, not an operating cost. The buyer will have different debt or none at all.
• Capital expenditures. A new septic system or repaving the roads is a capital investment, not a recurring operating expense. Note it separately; do not bury it in repairs.
• Depreciation. It is a tax concept, not cash out the door.

Owner salary deserves a careful word. If you manage the park yourself and pay yourself nothing, your NOI is overstated, because the next owner either works for free or hires a manager. Sophisticated buyers add a market-rate management cost back in. You are better off showing a reasonable management expense yourself than having a buyer insert a bigger one for you.

A worked example, clearly hypothetical

The numbers below are an illustration, not any real park's figures. Suppose a hypothetical 40-pad park collects $180,000 a year across lot rent, nightly stays, and fees. Suppose its operating expenses, taxes, insurance, utilities, repairs, a management allowance, and software, total $80,000. NOI is $180,000 minus $80,000, which is $100,000.

Now the pricing math. At a 10 percent cap rate, that park is worth $100,000 divided by 0.10, or $1,000,000. At an 8 percent cap rate it is worth $1,250,000. Notice two things. First, every extra dollar of documented NOI is worth ten dollars or more of price. Second, the cap rate a buyer applies depends heavily on how much they trust your numbers, which is a documentation problem as much as a market problem. If you want to run this math on your own park or on a deal you are evaluating, our investment analysis tools do exactly this.

Track it monthly, not at listing time

The calculation itself takes ten minutes. The hard part is having twelve months of clean inputs when a buyer asks. At Blue Quail, rent came in through digital payments and every charge was categorized as it happened, so producing an income statement was a button press, not an archaeology project. We built LotRush around that habit because we lived the alternative.

Close your books monthly. Reconcile collected rent against bank deposits. Categorize every expense the month it occurs. Twelve clean monthly statements are worth far more to a buyer than one year-end summary you assembled from memory, because they show a pattern instead of a claim.

Monthly tracking also changes how you operate long before any sale. When NOI is a number you see every month instead of once a year at tax time, you notice the expense line that crept up, the spot that has been sitting vacant, and the rate that has drifted below market while there is still time to do something about each of them. The owners who know their NOI cold are also, not coincidentally, the ones who negotiate from strength when a buyer eventually calls.

If you would rather have this happen automatically, you can start a free 14-day LotRush trial, no credit card required, and let the park keep its own books.