Ontario, CA Flex Space for Lease

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73 properties

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Updated: Jun 5

Renovated Flex Space with Warehouse

1115 S Grove, Ontario, CA 91761

$3,980/Mo

Renovated flex space combining private offices with a warehouse area
5 private offices, reception area, conference room, kitchen, and 2 restrooms
Warehouse includes high ceilings, storage room, and a tall roll‑up grade‑level door
Direct frontage along Grove Avenue in Belmont & Grove Business Park
Ample parking and Central Air

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Updated: Jul 17

Flex Industrial Warehouse with Office

10735 Vernon Avenue, Ontario, CA 91762

$6,300/Mo

2,400 sqft 0.41 AC lot

1963‑built industrial flex property with 17,700 SF lot in Ontario, CA.
Zoned IC (Community Industrial) under the County of San Bernardino for light manufacturing, warehouse, wholesale, and select commercial uses.
Detached 2,400 SF metal warehouse with its own electrical panel, 10‑foot roll‑up door, and ~14‑foot interior clearance.
Front 1‑bedroom, 1‑bath structure suitable for office use, providing separation of office and operational space.
Flexible layout for contractors, distributors, e‑commerce businesses, and other industrial users needing storage or workshop space.

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Flex Space with Renovated Office

1351 S Grove Ave 106, Ontario, CA 91761

$21 SF/Yr

1,940 sqft

1940 SF flex space with renovated office and plumbed warehouse.

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Freestanding Fully Racked Flex Warehouse

2785 E. Francis St., Ontario, CA 91761

$15.60 SF/Yr

4,476 sqft

Includes fully racked warehouse with 6 dock high loading doors and a private fenced yard.

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Renovated Office Flex Space

106-1351 S Grove Ave, Ontario, CA 91761

$21 SF/Yr

1,940 sqft

The warehouse area is plumbed, and the office component has been recently renovated.

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Smart Workspace Options at CA, Ontario - W 6th Street. Contact us today to book a tour!

980 6Th St, Ontario, CA 91762

Contact for pricing 2,121 sqft

(972) 764-8885

Discover many ways to work your way in CA, Ontario - W 6th Street

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Professional Workspace Solutions at Waterside Center. Contact us today to book a tour!

3200 Guasti Rd, Unit 100, Ontario, CA 91761

16 available spaces from 11 to 1,964 sqft

$129-$27,742/Mo per office

Flexible workspace in Waterside Center. Book a tour & get info

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Serviced Office Space for Rent at One Lakeshore. Contact us today to book a tour!

3281 Guasti Rd, Unit 7TH, Ontario, CA 91761

16 available spaces from 11 to 2,104 sqft

$129-$31,357/Mo per office

Flexible workspace in One Lakeshore. Book a tour & get info

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Renovated Office/Warehouse with Roll-Up Door

1115 S Grove 102, Ontario, CA 91761

$3,980/Mo

Renovated office and warehouse layout with reception, offices, and a tall roll-up grade-level door for deliveries.

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Freestanding Office Warehouse

2340 Archibald Ave, Ontario, CA 91761

Contact for pricing

6,806 sqft

Freestanding building with office space plus a fire-sprinklered warehouse featuring 16' clearance and a grade-level door.

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Renovated Flex Office/Warehouse

102-1115 S Grove Ave, Ontario, CA 91761

$3,980/Mo

Renovated office-and-warehouse suite with roll-up door, reception, offices, and ample parking in Belmont & Grove Business Park.

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Flex Office with 1 Grade-Level Door

2131 S Grove Ave, Ontario, CA 91761

Contact for pricing

3,228 sqft

Flex office suite offering 16' clear height, 1 GL door, and 200-amp power in a multi-tenant building.

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Freestanding Flex Space

1481 S Balboa Ave, Ontario, CA 91761

Contact for pricing

9,726 sqft

Office and showroom configuration with private offices, restrooms, loading access, and surface parking.

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Industrial Property with Clear-Span Warehouse

10776 Vernon Ave, Ontario, CA 91762

Contact for pricing

5,520 sqft 2.27 AC lot

Multi-parcel industrial property with warehouse, office improvements, drive-through access, and IC zoning.

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Flex Space with Office HVAC

1115 S Grove Ave, Ontario, CA 91761

Contact for pricing

3,305 sqft

Industrial/flex suite with office HVAC and dedicated office space in Ontario, CA.

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Industrial Flex Space with Loading Doors

1906 S Quaker Ridge Pl, Ontario, CA 91761

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17,000 sqft 0.85 AC lot

Industrial flex property combines warehouse functionality, office improvements, and ground-level loading access.

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Freestanding Flex Warehouse Building

2455 E Francis St, Ontario, CA 91761

Contact for pricing

40,551 sqft

Freestanding building with drive-around access, 4,952 SF of office space, and dock and grade-level loading.

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Freestanding Industrial Building Near Airport

1481 S Balboa Ave, Ontario, CA 91761

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9,726 sqft 0.63 AC lot

9,726 SF industrial building near Ontario International Airport.

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Freestanding Flex Space with Two Doors

1460 S Carlos Ave, Ontario, CA 91761

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8,120 sqft

Freestanding flex building offering two ground-level doors, LED warehouse lighting, and high-image office space.

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Industrial Warehouse with Dock Doors

1516 S Bon View Ave, Ontario, CA 91761

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167,600 sqft

Large industrial facility offering separate office and warehouse areas with secured truck circulation and freeway connectivity.

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Freestanding Flex Building

1625 Fremont Ct, Ontario, CA 91761

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11,700 sqft

Industrial flex facility with office space, loading access, and a secured outdoor yard.

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Flex Space with Dock Doors

1533 West Holt Boulevard, Ontario, CA 91762

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36,720 sqft 1.49 AC lot

Completed in 2023, the property combines office area with loading infrastructure and substantial clear height.

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Flex Space with Loading Access

800 S ROCHESTER, Ontario, CA 91761

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4,330 sqft

Industrial flex space in a professionally managed business park with freeway connectivity and on-site parking.

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Freestanding Flex Space with Dock Doors

1175 E Francis St, Ontario, CA 91761

Contact for pricing

217,185 sqft

Freestanding flex building with 19 dock high doors, plus 86 car and 31 trailer parking spaces.

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Ontario, CA Flex space Lease Rates & Market Statistics

Browse 73 Flex space listings for lease in Ontario, CA on Realmo, a commercial real estate marketplace serving the Ontario area. The current inventory totals 2,337,193 square feet of properties — an average of ~32,000 SF per listing.

Flex space lease rates in Ontario range from $15.60 SF/Yr at the entry level to $31.50 SF/Yr at the top of the market, averaging $22.28 SF/Yr. Pricing across the market is relatively uniform, which simplifies like-for-like comparison between listings. At $22.28 SF/Yr, the local average runs 14% above California's state average of $19.50 SF/Yr.

Ontario accounts for 25% of the 292 flex space listings currently available across San Bernardino County, where nearby markets include Rancho Cucamonga and Fontana. Flex space listings make up 39% of the 186 Industrial properties currently for lease in Ontario, with asking rates in line with the citywide Industrial properties average. Also worth a look for tenants weighing alternatives: Distribution centers (42 listings) and Other industrial properties (40 listings) elsewhere in the Ontario market.

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