The Question
What annual revenue does an airport parking lot generate? I'll build this bottom-up from the physical asset: a fixed number of parking spaces, how full they run, how long the average car stays, and what the lot charges per day. Parking revenue is fundamentally a function of occupied space-days multiplied by a daily rate, so I'll get to space-days first and price them last.
Assumptions
- Lot size. A mid-to-large airport lot (one of several at the airport) has about 5,000 spaces.
- Occupancy. Averaged across the year, including slow periods, the lot runs at about 70% full. Holidays are jammed; Tuesdays in February are not.
- Average stay. Airport parkers are travelers, so stays are long: an average of 4 days per car. Day-trippers pull it down; week-long vacationers push it up.
- Daily rate. A blended $25 per day. This mixes premium covered/short-term parking against cheaper economy/long-term lots.
- Open year-round. 365 days of operation.
The Calculation
The cleanest path is to count occupied space-days directly, because the average-stay figure cancels out when I do. On any given day, 5,000 spaces x 70% occupancy = 3,500 spaces are occupied.
Each occupied space earns the daily rate whether it's one car staying 4 days or four cars staying 1 day each. So daily revenue is 3,500 occupied spaces x $25/day = $87,500 a day.
Over a year: $87,500 x 365 = about $32 million a year.
Let me show the average-stay angle as a cross-check, since the question invites it. Cars per year: 3,500 occupied spaces, each turning over every 4 days, means 3,500 / 4 = 875 new cars arrive per day, or 875 x 365 = about 320,000 cars a year. Each car pays 4 days x $25 = $100. Then 320,000 x $100 = $32 million. Same answer, as it must be. I'll round the headline to roughly $30 to $35 million a year.
Sanity Check
Per space, $32M across 5,000 spaces is about $6,400 of annual revenue per parking space. At $25/day, that's the equivalent of each space being paid for about 256 days out of 365, which is 70% utilization. That's exactly my occupancy assumption reflected back, so the per-space economics are consistent. And $6,400 per space per year is a believable figure for a high-demand airport asset, far above a downtown garage and well below absurd.
A second angle: roughly 320,000 cars a year is about 875 a day, which for an airport moving tens of thousands of passengers daily is a sensible single-lot slice (most travelers get dropped off, take transit, or use other lots). If the number had implied more cars than the airport has passengers, I'd know I'd erred.
What Would Change the Answer
The daily rate is the most powerful and most variable lever, because it scales revenue linearly and ranges enormously: a premium short-term garage might blend to $45/day while a remote economy lot sits at $12. Halve or double the rate and you halve or double the answer. Occupancy is the next big swing, especially because airport demand is seasonal and a lot that averages 85% in a strong travel market changes the picture materially. Lot size is the most concrete input and the easiest to verify. The honest range here is wide, roughly $15M to $60M, and the rate-times-occupancy product is doing nearly all of the work.