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Flex space, defined
"Flex" usually means a one-story building, often concrete tilt-wall or metal, split into bays with a small office or showroom in front and open warehouse space in back. It's more flexible than a pure office or a big distribution warehouse.
Key terms
| Term | Meaning |
|---|---|
| Clear height | Usable height under the lowest beam or sprinkler. Flex often runs 14–24 ft; matters for racking and lifts. |
| Grade-level door | A roll-up door at ground level for vans and trucks to drive in. |
| Dock-high door | A door at truck-bed height for semi-trailers. |
| Office finish % | How much of the space is finished office. More office usually means higher rent. |
| NNN (triple net) | You pay base rent plus your share of property taxes, insurance and common-area maintenance. |
| Modified gross | Some expenses included in rent; others (often utilities) paid by you. |
| Power | Amps, voltage and three-phase availability. Critical for shops and manufacturing. |
| Yard / outside storage | Fenced outdoor space for vehicles, trailers and materials, often scarce. |
Flex vs. other options
- Self-storage unit: cheap, but usually no business operations, power or customer visits allowed.
- Shared warehouse / coworking warehouse: short terms, shared docks; good to start.
- Flex bay: your own door, office and address, with leases usually 1–5 years.
- Big-box warehouse: for large distributors, usually 20,000+ square feet.
Estimating how much space you need
List equipment and inventory footprints, add aisles (often 30–40% of the floor), work areas, office, restroom and growth. Measure your vehicles against door heights.