How much does it cost to lease flex space in DFW?

In outer North Texas submarkets, small-bay flex space typically quotes in the mid-teens per square foot per year on a triple-net basis, plus NNN charges. For a 2,000 SF unit, that usually pencils to a total monthly cost in the low-to-mid $3,000s. Here's how the number is actually built, so a quote sheet never surprises you.

The three layers of a flex lease cost

1. Base rent

Quoted in dollars per square foot per year. Our own market research found Rockwall flex averaging around $16.30/SF — well above the roughly $9.78/SF DFW industrial average — precisely because small bays are scarce: Rockwall flex vacancy ran near 4.5% against 9.4% for DFW industrial overall. Scarcity is the tenant's enemy and the reason to move early on a unit that fits. For the broader market backdrop, Cushman & Wakefield's DFW MarketBeat publishes current industrial vacancy and asking rents every quarter.

2. NNN charges

Your proportional share of property taxes, building insurance, and common-area maintenance. In newer North Texas parks this commonly adds several dollars per square foot per year. Texas has no state income tax but relatively high property taxes (see the Texas Comptroller's property tax overview), so never compare two spaces on base rent alone.

3. Your own operating costs

Flex units are individually metered — you pay your own electric, water, and internet, and control your own thermostat. Add business insurance and signage.

A worked example: 2,000 SF

Compare that to stacking a small office lease on top of storage units and garage space — for many businesses the flex unit consolidates two or three payments into one, with a real address customers can visit. Unsure whether you even need this category? Start with what flex space is and flex vs. traditional warehouse.

What moves the price up or down

• Unit size — smaller bays rent for more per foot. Sizing right matters; see what size flex space your business needs.
• Showroom frontage — highway-visible units with glass command a premium over rear-facing bays.
• Age and spec — new construction with 18' clear, LED lighting, and 3-phase power rents above older stock.
• Submarket growth — fast-growing counties (Collin and Rockwall among them, per Census QuickFacts) keep upward pressure on rates.

FAQ

What does NNN mean in a flex space lease?

Triple-net: base rent plus your share of taxes, insurance, and common-area maintenance. Quoted rate + NNN estimate = your real occupancy cost.

Why does small flex space cost more per square foot than big warehouses?

More walls, doors, restrooms, HVAC units, and glass per 1,000 SF — and far less of it available. Scarcity plus higher build cost equals higher rates.

What costs sit on top of rent and NNN?

Your own utilities (units are individually metered), business insurance, signage, and any buildout beyond the delivered condition.