Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Breakeven occupancy
124.3%
100% occupancy annual revenue
$1,314,000
Fixed cost + debt service
$1,470,000
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How to use this
- 1Enter total garage spaces.
- 2Enter average revenue per space per day ($).
- 3Enter variable cost % of revenue (%).
- 4Enter annual fixed operating cost ($).
- 5Enter annual debt service ($).
- 6Read your breakeven occupancy on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Structured parking garages carry much higher fixed costs than surface lots — elevator maintenance, higher insurance, security staffing, and often significant debt service from construction cost that can run $20,000-$40,000+ per space. This calculator takes total spaces, average daily rate achieved, fixed operating costs, and debt service, to compute the breakeven occupancy percentage at which revenue exactly covers fixed cost plus debt service, and shows the margin of safety at your assumed stabilized occupancy. Garages are far less forgiving than surface lots to occupancy misses given the fixed cost base, which is why realistic traffic studies before construction matter more here than almost any other asset in this category.
Worked example
Using the values the calculator loads with:
Inputs
- Total garage spaces: 400
- Average revenue per space per day: 9 $
- Variable cost % of revenue: 10 %
- Annual fixed operating cost: 620000 $
- Annual debt service: 850000 $
Results
- Breakeven occupancy: 124.3%
- 100% occupancy annual revenue: $1,314,000
- Fixed cost + debt service: $1,470,000
What each field means
Inputs
- Total garage spaces
- The total garage spaces used in the calculation. Starts at 400 so you have a working example on load.
- Average revenue per space per day ($)
- The average revenue per space per day used in the calculation, measured in $. Starts at 9 $ so you have a working example on load.
- Variable cost % of revenue (%)
- The variable cost % of revenue used in the calculation, measured in %. Starts at 10 % so you have a working example on load. Accepted range: 0–40 %.
- Annual fixed operating cost ($)
- The annual fixed operating cost used in the calculation, measured in $. Starts at 620000 $ so you have a working example on load.
- Annual debt service ($)
- The annual debt service used in the calculation, measured in $. Starts at 850000 $ so you have a working example on load.
Results
- Breakeven occupancy
- Returned as a percentage and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- 100% occupancy annual revenue
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Fixed cost + debt service
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why is garage breakeven occupancy usually higher than surface lots?
Construction cost per space for a structured garage runs 10-20x a surface lot, so debt service dominates the cost base. Even with lower per-space operating expense ratios than an attended surface lot, the sheer size of fixed debt obligations pushes breakeven occupancy meaningfully higher.
What breakeven occupancy is considered financeable?
Lenders typically want to see projected stabilized occupancy at least 20-25 percentage points above breakeven, and want breakeven occupancy itself under roughly 70% so the facility has room to absorb a recession or new competing supply without going cash-flow negative.
How does municipal or university ownership change this math?
Publicly or institutionally owned garages often aren't held to the same debt-service coverage standard as private developers and can operate at a policy-driven loss (subsidized to support downtown retail or campus access), so breakeven occupancy is a less binding constraint for those owners than for a private for-profit operator.
What's the fastest way to lower breakeven occupancy after construction?
Refinancing debt at a lower rate or longer amortization has the single biggest impact since debt service is usually the largest fixed cost. Beyond financing, cutting attended staffing hours via automated payment technology is the next largest lever, though it has diminishing room once minimum security staffing is met.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
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Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Parking Garage Breakeven Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/parking-garage-breakeven
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/parking-garage-breakeven" target="_blank" rel="noopener">Parking Garage Breakeven Calculator — RevenueLab</a> (2026).</p>
Source: [Parking Garage Breakeven Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/parking-garage-breakeven) (2026).