Downtown, Rialto, CA Office Spaces for lease

Updated: Jul 20

Office Units with Courtyard

202 N Riverside Avenue, Rialto, CA 92376

$1,100/Mo

Gated office property with a courtyard
Central air conditioning
Rear parking and street parking
At Riverside Avenue and 2nd Street
Access from I‑10, I‑215 and State Route 60

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Updated: Nov 28, 2025

Rialto Office Space For Rent

335 W Foothill, Rialto, CA 92376

$3,599/Mo

1,870 sqft

Great corner lot location
Lots of parking
Flexible square footage rental options
Front office availability
Year Built: 1950

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Office Units with Rear Storage

340 N RIVERSIDE AVE, Rialto, CA 92376

Contact for pricing

7–12 people 1,870 sqft Built 1915

Office property with dedicated parking and additional rear storage for operational needs.

Storage area Dedicated parking lot

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Warehouse with Office Sublease

2510-2580 W Walnut Ave, Rialto, CA 92376

Contact for pricing

1,197,051 sqft 175 docks + 4 drive-in Heavy power

Highway access

Sublease through 5/31/2028 with ESFR sprinklers, dock-high and grade-level doors, and 4,000 amps for operations.

Sprinklered

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Flex Space with Grade-Level Doors

300-322 S Sycamore Ave, Rialto, CA 92376

Contact for pricing

6,000 sqft 16 ft clear 2 drive-in 2,500 sqft office

Flexible commercial space combines office, shop, and storage areas with two restrooms and functional loading access.

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5 active listings match your search: Office for lease in Downtown Rialto, CA. Based on your search, we've also compiled 7 Potential Opportunities for your consideration: 4 spaces in nearby cities and 3 properties for sale.