Last updated on May 21st, 2024 at 05:41 am

Diamond Bar is a predominantly residential area with several shopping centers interspersed throughout the city. There are also numerous restaurants and additional retail spots. Businesses in the area benefit from easy access to several major freeways.

For business owners interested in setting up in Diamond Bar, our editorial team has compiled a list of the best commercial architects in the area. The firms have plenty of experience in designing spaces for retail, restaurant, and commercial use. 

Architecture Refined Corporation

556 North Diamond Bar Boulevard, Suite 305, Diamond Bar, CA 91765

Architecture Refined Corporation bases its design on the physical, spiritual, and cultural environment of a project. CEO Chaifung Yong believes that architecture should mirror the past and present of the area a project is located. The firm offers services for architecture, master planning, space planning, interior architecture, and building designs to local and international clients alike. 

The firm has worked on corporate, retail, restaurant, residential, hospitality, and sustainability projects. The East 180 Restaurant is one of the firm’s projects in Diamond Bar, CA. It features stone tiling for the exterior, while skylights, hanging light features, wooden pillars, and wooden ceiling beams make for a bright interior.

Creative Design Associates

17528 Rowland Street, 2nd Floor, City of Industry, CA 91748

Creative Design Associates, Incorporated (CDA) is a team of architects, planners, and design specialists. Founder Eric Chen leads the firm in providing architectural design, master planning, accessibility code analysis, design-build, real estate development, consulting, and technical services.

The firm practices close collaboration with clients to ensure that its plans capitalize on emerging opportunities and mitigate risks. It has experience in mixed-use, retail, office, hospitality, multi and single-family residential, planning, interiors, and ADA projects. The Diamond Bar Executive Park is a great example of the firm’s work; CDA worked on 26,663 square feet of office space. The exterior of the office features reflective glass windows and accessibility ramps. Its interior has an industrial-type staircase and an elevator to the second floor. The windows also bring in plenty of natural light.

CO-AR Design, Inc.

680 Brea Canyon Road, Suite 178, Diamond Bar, CA 91789

CO-AR Design, Inc. works collaboratively with clients to tend to each of their needs and concerns. Its team is encouraged to push limits at each step to meet all of the client’s goals.

Dennis Lee and Linda Chen head the firm, guiding both their team and clients. The firm’s project types include retail, restaurant, residential, and office. Hock + Hoff in Los Angeles, CA received restaurant tenant improvements from CO-AR Design. The restaurant now sports distressed walls, mason jar light fixtures, white tiling, white woodwork, exposed ceilings, and large entrance windows.

LADG | LA Design Group, Inc.

21671 Gateway Center Drive, Suite 213, Diamond Bar, CA 91765

LADG uses an integrated and sustainable approach to architectural design and planning. Its renovation work on the Starbucks in Pomona, CA features abundant outdoor seating. The remodel is located at the Main Library on the Cal Poly Pomona campus. It uses the updated design features introduced by Starbucks Incorporation. LADG’s scope includes architecture, engineering, and planning.

Fariba S. Shantiyai, American Insurance Association (AIA), Leadership in Energy and Environmental Design (LEED) AP is at the head of the firm. Services include conceptual design, design development, construction documents, post-construction, specifications, construction administration, and closeout. Its other projects are commercial, retail, education, and residential structures.

Architecture Design Collaborative

23231 South Pointe Drive, Laguna Hills, CA 92653

Architecture Design Collaborative (ADC) follows a collaborative process, working closely with clients, city officials, consultants, vendors, and suppliers. The firm fosters an open, friendly, and competitive environment for both employees and collaborators. The Perimeter Mall in Atlanta, GA is a renovation project that also involved signs, lighting, furniture, fixtures, and equipment. Craig Chinn, AIA, and Alexandra Gomez led ADC in transforming the mall’s traditional interior into a shopping center that makes interiors feel like they are out in the open air. New storefronts feature exterior style materials like OmegaLite Panels, LongBoard, stucco, and stone columns. The firm was also involved in architectural changes, exterior entrance changes, new signs, custom lighting, and restroom design. 

The firm offers services for retail, commercial, residential, restaurants, environmental graphics, and signage. Its services include construction administration and documentation, entitlements and city processing, and design development.


  • Shahe Demirdjian

    Shahe is an Editor at General Contractors with around four years of experience as a writer and editor in the construction space. Shahe has always had a huge interest in commercial/residential construction and real estate. On top of his experience at General Contractors, he has two years of experience as a Construction Partner Specialist at BuildZoom and six years of experience as a licensed real estate agent. In his work, he takes advantage of his expertise to take complex technical jargon from those realms and transform them into accessible, engaging content, blending his business administration expertise with a degree from Arizona State University with his experiential insights. Expertise: Architecture, Home Design and Build, Home Remodeling Key Highlights: Arizona Real Estate - Licensed Salesperson Education: Arizona State University - Bachelors in Business Administration