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Rent per square foot calculator.

Landlords quote commercial rent as an annual rate per square foot; your bank account sees a monthly total. Convert either way in a second — so you can compare listings on the same footing.

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Annual rent = rate ($/SF/yr) × rentable SF; monthly = that ÷ 12. Watch the quote basis: most South Florida commercial space is quoted NNN (base rent plus taxes, insurance, and CAM on top), so the all-in cost per foot is higher than the base rate alone. Confirm whether a quote is NNN, modified gross, or full-service.

Reading a commercial rent quote

Commercial landlords quote rent as an annual rate per square foot, but you pay a monthly total — and comparing spaces means converting between the two. Annual rent equals the rate times the rentable square footage; divide by twelve for the monthly figure. The catch in South Florida is that most rates are quoted triple-net, so taxes, insurance, and common-area charges stack on top of the base rate.

Example. A 3,000-square-foot suite quoted at $34 per square foot per year is $102,000 annually, or $8,500 a month — before NNN. If the landlord’s NNN estimate is $9 per square foot, your all-in occupancy cost jumps to $43 per square foot, or about $10,750 a month. Always compare all-in, not base.

Frequently asked questions

How do you calculate commercial rent per square foot?
Multiply the annual rate per square foot by the rentable square footage, then divide by 12 for the monthly payment. For example, 3,000 SF at $34/SF/yr is $102,000 a year, or $8,500 a month — before NNN charges.
Is commercial rent quoted monthly or annually?
In most U.S. markets, including South Florida, commercial rent is quoted as an annual rate per square foot (e.g. “$34/SF”). Multiply by the size and divide by 12 to get the monthly figure. Some retail and industrial deals are quoted monthly per foot — always confirm the basis.
What does NNN add to the rate per square foot?
NNN (triple net) charges — property taxes, insurance, and common area maintenance — are billed on top of base rent and often add several dollars per square foot per year. Ask the landlord for the current NNN estimate so you’re comparing all-in occupancy cost, not just base rent.

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Estimates are for planning only and use simplified assumptions — not tax, legal, or investment advice. Verify with your lender, CPA, and a full broker analysis before acting.