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Office Space for Rent Ontario

Regus Ontario - Concours St

3990 Concours Street 1st Floor

5 Spaces, 6 ^ppl

Coworking from $129/MO

Located on Concours Street in Ontario, California, this flexible coworking space offers a dynamic environment designed for modern professionals. With a prime location near major highways and the Ontario International Airport, this space provides easy access to transportation and nearby amenities. Fully equipped with high-speed internet, private offices, collaborative workspaces, and meeting rooms, it caters to entrepreneurs, freelancers, and small businesses seeking a productive, cost-effective solution. Flexible membership options, 24/7 access, and a vibrant community make this coworking space ideal for companies looking to thrive in an innovative and supportive atmosphere.

Regus Ontario - Porsche Way

3500 Porsche Way 2nd Floor

5 Spaces, 1 ^ppl

Coworking from $1,050/MO

The construction team is currently building this location, adding another site to a 4000+ network that enables people worldwide to work closer to where they need to be. Specific details about this location will be shared soon. All workspaces are designed with professionalism and productivity in mind. Features include ergonomic furniture, ambient lighting, and essential on-site facilities, along with shared amenities such as kitchens and break-out spaces. Workspaces accommodate a range of workstyles, whether visiting a business lounge, coworking space, renting an office for the day, or booking a meeting room by the hour. Long-term solutions are also available, including ready-to-go offices, fully customizable offices, or a dedicated coworking desk.

Office Evolution

3350 Shelby St. Suite 200

1 Space, 1 - 4 ^ppl

From $800/MO

Office Evolution Ontario is a flexible coworking solution located just east of downtown Los Angeles and close to the Ontario International Airport. We offer private offices, coworking, conference rooms, business addresses, and other virtual services. Our flexible options allow us to create a solution that works just for you. Contact us today to learn more about our options!

Spaces Ontario - CoRise Spaces

4684, Ontario Mills Parkway Ste 200

1 Space, 12 ^ppl

(130^SF)

From $149/MO

CoRise Spaces is a modern, beautifully designed coworking and private office community built exclusively for mental health and allied wellness professionals. Created by therapists and psychologists, our space features fully equipped therapy rooms with soundproofing, private telehealth pods, focused coworking desks, a welcoming provider lounge, and conference rooms available by the hour. Members enjoy a flexible credit-based membership system — no long-term leases, no wasted space. With on-site receptionist services Monday through Saturday (8am–5pm), after-hours provider access until 10pm, complimentary Wi-Fi, coffee, light snacks, and a professional community of like-minded clinicians, CoRise is the professional home mental health providers deserve. Whether you're seeing clients in-person or working on notes between sessions, our space is thoughtfully designed to support your practice at every stage.

Regus Ontario - West 6th St

980 W. 6th Street 1st & 2nd Floor

5 Spaces, 8 ^ppl

Coworking from $129/MO

Known as "The Gateway to Southern California," Ontario serves as the economic center of the Inland Empire Metropolitan Area, a region renowned for its sunlit valleys and rolling hills, once home to vast vineyards, citrus groves, and grazing pastures. Now a thriving industrial and commercial hub, Ontario hosts over 8,000 businesses. Flexible serviced office space at Palmetto Offices provides an opportunity to join this dynamic network. Built-in 2021, the modern offices feature premium finishes, ergonomic furniture, and business-grade WiFi. Purpose-built meeting rooms come equipped with advanced presentation and video conferencing technology. Move-in-ready workspaces are available for dedicated use or on-demand booking through a user-friendly app. Secure parking is included for added convenience.

Regus Ontario - North San Antonio Ave

204 North San Antonio Avenue 1st and 2nd floor

5 Spaces, 1 ^ppl

Coworking from $69/MO

This office building on North San Antonio Avenue combines professional functionality with a welcoming, polished appearance. The property features a garden driveway entrance and a distinctive, red-tiled rooftop. Interiors include furnished meeting rooms equipped with widescreen TVs, whiteboards, and modern video conferencing technology. Flexible workspace options include private offices, open coworking areas, and individual desk spaces. Business-grade Wi-Fi, on-site support, and a friendly reception area ensure smooth daily operations. Relaxed breakout areas and kitchen facilities provide spaces for informal meetings or breaks, while proximity to downtown offers additional dining and networking opportunities.

Regus Ontario - Guasti Rd

3200 Guasti Road Suite 100

3 Spaces, 1 - 8 ^ppl

(up to 3,000^SF)

Coworking from $329/MO

This exquisitely furnished and extensive class A corporate building is impressively situated within a professional campus environment with beautifully landscaped walkways, courtyards and a relaxing water feature all present on-site. Within this stunning and exceptionally prestigious working environment there are three spacious and fully functional meeting rooms that can accommodate groups from as small as four people to as many as 30, each with high speed internet and telephone services. The center maintains a dedicated furnished “Day Office”, and can be reserved by the hour, day or week to offer significant flexibility.

Regus Ontario - E. Guasti Rd

3281 E Guasti Road 7th Floor

3 Spaces, 1 - 7 ^ppl

Coworking from $379/MO

This prestigious eight-storey tower features great views over a 40 ft high fountain and lake from its seventh-floor location. The building boasts grand formal granite lobbies, wide windows and covered parking. It is situated in the heart of the Ontario, California innovation hub within Los Angeles and the counties of Orange, San Bernardino and Riverside. Skills and talent are plentiful in an area that’s home to many higher education establishments. A diverse range of companies have made this fast-growing region their home, including packaging, health insurance law enforcement products and utilities firms in the immediate vicinity.

990 Barrington Ave

1 Space, 1 - 2320 ^ppl

(289,940^SF)

800 North Haven Avenue

800 N Haven Ave

2 Spaces, 8 - 40 ^ppl

(2,955 - 8,658^SF)

Seize a premier opportunity in the prestigious Ontario Airport submarket with this exceptional ±80,828 SF, 4-story Class-A office building. Strategically positioned with direct access to I-10 via Haven Ave and just minutes from I-15 and I-60, this property offers unmatched connectivity. Key highlights include Ample Parking: 5/1,000 parking ratio with covered and reserved spaces available. High Visibility: Prominent building signage for qualified tenants. Secure Access: Card key entry system ensuring safety and convenience. Featuring full-service gross leases, professional management, and meticulous maintenance, this property delivers both convenience and an elevated corporate image.

3500 Porsche Way

1 Space, 1 - 90 ^ppl

(5,846^SF)

From $13,445/MO

812-816 Euclid Ave

1 Space, 1 - 31 ^ppl

(3,920^SF)

From $5,880/MO

1435 South & 1525 South Grove Street

1435 & 1525 S Grove St

5 Spaces, 1 - 12 ^ppl

(1,164 - 1,440^SF)

From $1,280/MO

* Unit Sizes ranging from 987 – 1,761 SF • Warehouse Doors 8’ x 12’ Tall • 85% Office; 15% Warehouse • Great Street Visibility • Ground Level Loading • Located Near 60 Freeway and Close to Ontario Airport • 200 AMP, 120/208 V 3 Phase • Low Wattage Fluorescent Strips in Warehouse (T8) • 4 Parking Spaces per 1,000 SF

3633 Inland Empire Boulevard

3633 Inland Empire Blvd

5 Spaces, 1 - 42 ^ppl

(1,204 - 5,291^SF)

From $3,190/MO

Reception area and open bullpen

Ontario Airport Towers

2855 E Guasti Rd

5 Spaces, 1 - 64 ^ppl

(1,171 - 10,352^SF)

 6-Story, Multi-Tenant Office Building  Prime Ontario Airport Submarket Location  Unparalleled I-10 Freeway Frontage Visibility  Built in 2008; +/- 147,732 SF; approx. 7.1 acres land  Immediate Access to I-10, at Archibald Avenue Exit  Close Proximity to I-15 and 60 Freeways  4/1,000 Parking; Reserved Parking Available  Card Key Security System; Full Service Gross Leases  Professionally Managed and Maintained