Tenant Density Calculator

Tenant density measures usable SF per person. Over the past decade, average density has dropped from 250 USF/person to well under 200 — sometimes under 120 in high-efficiency tech layouts. This calculator benchmarks your density, shows rent per person, and flags whether parking and HVAC will need upgrades.

Usable SF

Headcount

Rent / RSF / year

Load factor

Usable SF / person

160

Rentable SF / person

184

Rent per person / year

$6,440

Total annual rent

$483,000

Density benchmark

Dense (120-170)

How the math works

Tenant density is usable SF per person — the single best measure of how much office space a team actually uses. Historical benchmark: 250 USF/person. Modern open-plan with hot-desking: 120-170 USF/person. Dense tech: 100 USF/person or less.

Density drives capacity planning, HVAC sizing, parking ratios, and restroom code compliance. Landlords typically underwrite 1 person per 150-200 USF; denser plans need sign-off from the landlord.

How to Use

Enter usable SF and planned headcount.
Enter rent per RSF per year and the building load factor.
Read USF per person and the density benchmark category.

Frequently Asked Questions

Why density matters?

Higher density means lower rent per person and better capital efficiency. But it also strains parking ratios, HVAC capacity, and restroom code compliance. Landlords often negotiate 'maximum density' clauses — 1 person per 150 or 200 USF.

Hybrid / hot-desking impact?

If 40% of staff WFH on any day, effective density is lower than headcount suggests. Plan desks for peak occupancy (~75% of headcount) and use neighborhoods/hotelling to avoid over-renting.

Parking ratio implications?

Most office parking ratios are 3-4 stalls per 1,000 RSF. At 120 USF/person with 1.15 load = 138 RSF/person. A 10,000-person floor plate needs ~72 people × 3 stalls/1000 = 216 stalls if all drive. Hybrid cuts that down dramatically.