Small Bay
Flex Industrial
Real Estate
SmallBay.co is a resource for small bay flex industrial real estate developers, owners, operators, investors, brokers, and anyone looking to learn more about the asset class.

What is small bay and flex industrial?
Small bay industrial is multi-tenant industrial real estate with compact units—typically 500 to 10,000 SF each—that combine warehouse and office space. Buildings can be much larger overall; the unit size is what sets it apart from big-box.
Typical physical traits.
Who leases it.
Related terms.
Tools & calculators.
Free tools for small bay flex industrial real estate—for people interested in or operating these properties.
Monthly Lease Calculator
Estimate monthly base rent, CAM charges, and total occupancy cost for a small bay flex unit.
Tenant Underwriting Calculator
Evaluate tenant creditworthiness with rent-to-revenue ratios, occupancy cost analysis, and risk scoring.
NOI Calculator
Calculate Net Operating Income for your small bay flex property with expense tracking and vacancy assumptions.
DSCR Calculator
Calculate Debt Service Coverage Ratio to evaluate loan feasibility for small bay industrial properties.
CAM Reconciliation Calculator
Calculate tenant CAM shares, true-ups, and annual reconciliation for multi-tenant small bay properties.
Occupancy Cost Ratio Calculator
Calculate a tenant's total occupancy cost (rent + CAM + utilities) as a percentage of revenue to assess affordability risk.
Cash-on-Cash Return Calculator
Calculate cash-on-cash return on a small bay acquisition from down payment, closing costs, NOI, and annual debt service.
Yield on Cost Calculator
Calculate yield on cost and development spread from stabilized NOI, total project cost, and comparable market cap rate.
Rent Escalation Calculator
Project a year-by-year base rent schedule from fixed percentage, fixed dollar, or CPI-style escalations over a lease term.
Latest from the blog.
Articles on small bay flex industrial, leasing, and related terms.
What is Net Operating Income (NOI)?
NOI is a property's income after operating expenses, before debt service and capital costs. Formula, what counts as income and OpEx, and how lease structure changes the stack.
Flex Industrial vs Self Storage: A Side-by-Side Guide
How flex industrial and self storage compare on use cases, unit size, lease terms, operations, site selection, and underwriting inputs.
Branding Your Small Bay Portfolio
Your small bay brand is more than a logo—it's the total experience tenants have with your property. Here's how to build a brand that attracts quality tenants and commands premium rents.
The Best Places to List Small Bay Industrial Property
More listings mean more leads. Here's where to post your small bay flex industrial space to maximize exposure and fill vacancies faster.
Small bay vs. big-box industrial.
Big-box warehouses usually serve one large occupier. Small-bay properties divide space among many tenants in smaller units.