Warehouse Features & Specs

Rentable vs. Usable Square Feet

Also known as: rentable square feet, usable square feet, load factor

Definition

Usable square feet is the space a tenant can actually occupy and use. Rentable square feet adds a share of common areas, so you pay for more than you use. The gap between the two is the 'load factor,' and it can quietly inflate your real cost per square foot.

There are two ways to measure space, and the difference shows up on your invoice. Usable square feet is what you can actually occupy. Rentable square feet adds your share of common areas like hallways, lobbies, and restrooms. You pay rent on the rentable number, even though you only work in the usable part.

Why this matters for small businesses

The gap between the two is the load factor, and it can quietly add 10 to 20 percent to your effective rent. Two listings with the same “square footage” can cost very different amounts once you account for what you actually get to use, plus CAM charges layered on top.

Compare real space, not inflated numbers

WareSpace prices flexible small warehouse units on straightforward, all-inclusive terms so you can compare apples to apples. Want to get more out of the space you pay for? See how tenants maximize usable warehouse space, then get an instant quote.

Frequently asked questions

What is the difference between rentable and usable square feet?
Usable square feet is the area inside your unit that you can actually use. Rentable square feet adds your share of shared spaces like hallways, lobbies, and restrooms. You pay rent on the rentable figure, even though you only occupy the usable portion.
What is a load factor?
The load factor (or loss factor) is the percentage difference between rentable and usable square feet. A 15 percent load factor means you pay for 15 percent more space than you can use. The higher the load factor, the more you overpay relative to your real footprint.

Last updated June 24, 2026

A small business owner packing products inside a WareSpace unitWareSpace tenant Prepfort operating inside its warehouse unitWareSpace tenant RoboChef working with production equipment inside its unitWareSpace tenant UniBeauty preparing products inside its warehouse unitWareSpace tenant team members picking inventory inside their unitA WareSpace tenant working among inventory and packing supplies

See your space. Move in the same day.

Book a tour, meet the General Manager, and walk your unit. No personal guarantee, no long-term contract, no pressure.

Available units starting at $1,000/mo, all-inclusive