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Office Space for Rent East - Diamond Bar, CA

HQ Pomona - Rancho Camino Dr

21 Rancho Camino Dr

5 Spaces, 10 ^ppl

Coworking from $35/MO

The construction team is currently busy building this location, another addition to a growing network that enables people worldwide to work closer to where they need to be. Specific details about this location will be provided soon, but all workspaces are designed with professionalism and productivity in mind. Ergonomic furniture, ambient lighting, and all necessary on-site facilities are included, along with shared amenities like kitchens and break-out spaces. These workspaces cater to a variety of workstyles, whether it's a drop-in to the business lounge, coworking space, an office for the day, or a meeting room by the hour. Long-term solutions are also available, including ready-to-go offices or fully customizable spaces, as well as dedicated coworking desks.

Union Cowork

440 East Route 66

3 Spaces, 1 - 2 ^ppl

Coworking from $300/MO

The workspace offers a modern working office space with all the required instruments for seamless working, such as front desk reception, 24-hour access, mail handling, an on-site management team, a fully air-conditioned workspace, and kitchen services available to all users. Equipped with the latest technical technology, state-of-the-art meeting and conferencing facilities, and excellent business services supported by a team of professionals, elegant lighting, modern furniture, high-speed internet, flooring, printing and scanning facilities, and services like beverages and a kitchen are all in-house.

ESDI Corp.

3610 Central Avenue Suite 400

1 Space, 1 ^ppl

From $700/MO

Riverside Central Business Center is located in the heart of Riverside, directly off Central Avenue and across from the Riverside Plaza. The Center is an excellent choice for clients who desire easy access to the 91 freeway and want to be within close proximity of the Riverside Regional Airport. This property is conveniently located within walking distance of restaurants, hotels, shopping, and much more.

Spaces Ontario - CoRise Spaces

4684, Ontario Mills Parkway Ste 200

1 Space, 12 ^ppl

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.

Saltbox

1801 Flower Avenue

1 Space, 1 ^ppl

Coworking from $540/MO

This remarkable office space has everything needed for an efficient and productive team. Fulfillment services, onsite picking, packing, and shipping support, and a thriving community of entrepreneurs on hand. Amenities include office and warehouse suites, office furnishings, free parking, unlimited coffee and snacks in the kitchen, access to the photography studio, shipping station, conference rooms, private phone booths, community spaces, and events. A fast and reliable WiFi connection ensures that productivity is always maintained. Utility areas with tea and coffee facilities present opportunities for networking and connecting with like-minded colleagues.

ESDI Corporation

3610 Central Avenue Suite 400

2 Spaces, 1 ^ppl

(up to 250^SF)

From $95/MO

This location offers both long and short term pricing programs, marketing itself as one of the most flexible office spaces around. At this center, you will have the opportunity to customize your space and truly make it your own. The on-site management team is fully trained and will ensure that your business needs are taken care of. Professional conference room use comes standard at this location upon request. State-of-the-art systems are used to make your time at this office hassle-free. This location offers 24-hour access to ensure that your business needs can be taken care of at any time.

ESDI Corporation

14241 Firestone Boulevard Suite 400

3 Spaces, 1 - 4 ^ppl

Coworking from $373/MO

This center is a great space that has been designed to meet the demands of any modern business. The beautifully designed office spaces empower teams and companies for growth, with high ceilings and large windows that provide natural lighting. The center offers several facilities, such as high-speed internet, professional meeting rooms, concierge services, mail handling, business-class printers, and professional-grade daily cleaning. The center is accessible 24 hours a day so the clients can work flexibly. This building is a wonderland for all things digital – providing an ever-expanding hub of creatives with never-ending networking opportunities.

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!

Premier Workspaces

9431 Haven Avenue (HVN) Suite 100

2 Spaces, 1 - 5 ^ppl

From $75/MO

This building is a wonderland for all things digital – providing an ever-expanding hub of creatives with never-ending networking opportunities. This business center is the leading workspace provider with multiple office solutions for every business. This business center provides fully furnished offices with high-speed internet, parking space, meeting space, professional-grade daily cleaning services, IT support and telecom services, kitchen facilities, and much more. This recently refurbished center provides an excellent platform for any business to flourish with its cost-effective workplace solutions.

Regus Ontario - North San Antonio Ave

204 North San Antonio Avenue 1st and 2nd floor

5 Spaces, 7 ^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 Arcadia - Huntington Dr

440 E Huntington Drive Suite 300

3 Spaces, 1 - 10 ^ppl

(up to 16,450^SF)

Coworking from $459/MO

This fully furnished and exceptionally equipped professional business center installation is set within a prestigious and commercially significant landmark, six-storey office building which stands out amongst the surrounding suburbs. Offering executive suites, open-plan office space and impressive virtual office options this highly professional and locally renowned center has a solution to your unique business needs. Take advantage of the high speed WiFi available throughout the center as well as the meeting rooms, videoconferencing rooms and business lounge which are all on-site and available for you to use when ever you need.

Regus San Bernardino - East Carnegie Dr

473 E Carnegie Drive Suite 200

3 Spaces, 1 - 7 ^ppl

(up to 14,210^SF)

Coworking from $399/MO

Establish your business successfully in this professional and exquisitely furnished office space in a prestigious corporate business center. The striking exterior consists of a stunning glass and stone architectural design, making it an eye catching building and landmark local venue as well as a premium workspace center. The center offers fully furnished executive office suites and open-plan office space. The center also features convenient onsite amenities such as an LA Fitness Gym, kitchen area, meeting rooms and a business lounge. The center also holds regular client appreciation events, perfect for networking with other like-minded professionals.

HQ San Bernardino - North Arrowhead Ave

715 North Arrowhead Avenue 1st & 2nd Floor

5 Spaces, 10 ^ppl

Coworking from $129/MO

Located on North Arrowhead Avenue in San Bernardino, this flexible coworking space offers a dynamic environment for professionals, freelancers, and businesses of all sizes. With modern, fully-equipped workstations, high-speed internet, and access to private meeting rooms, the space is designed to foster productivity and collaboration. The prime location provides easy access to major highways, public transportation, and local amenities, making it convenient for daily commutes. Whether for a day or long-term use, this coworking space provides the flexibility and resources needed to thrive in a growing business hub.

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 - E. Guasti Rd

3281 E Guasti Road 7th Floor

3 Spaces, 1 - 7 ^ppl

Coworking from $499/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.

55 S Raymond Ave

1 Space, 1 - 9 ^ppl

(1,173^SF)

West Main Plaza is a medical/office/retail complex located in the city of Alhambra. The five-building complex consists of one 3-story medical/office building, two 1-story medical/office buildings, one 1-story commercial building and one 1-story restaurant situated at the signalized intersections of Palm Avenue, Main Street, and Raymond Avenue.

25 S Raymond Ave

2 Spaces, 1 - 11 ^ppl

(601 - 1,434^SF)

Westport Building

12328 South St

1 Space, 1 - 3 ^ppl

(375^SF)

From $1,200/MO

Two story building. Clean and well maintained. Attached parking lot.

Metro Centre

3333 S Brea Canyon Rd

1 Space, 4 ^ppl

(559^SF)

From $1,386/MO

The units in the metro centre are a perfect Place for startups or small business. The location is convenient and central. Its next to two gas stations, a convenience store, and 57 freeway. Parking is always available.