> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/los-angeles-ca/architecture-and-planning/ # Architecture Firms in Los Angeles, CA The bigger architecture firms headquartered in Los Angeles, CA, with what they do, their sizes and how to reach their people. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** Among the architecture firms counted in Los Angeles, CA, the biggest by headcount range include Hmc Architects, Co Architects and Steinberg Hart. They are mostly very small: 88% have 50 or fewer employees. ## Which architecture firms are in Los Angeles? Among the companies whose public profile lists Architecture and Planning as their industry and Los Angeles, CA as their headquarters, the biggest by headcount range include Hmc Architects, Co Architects, Steinberg Hart, Valerio Architects and Marmol Radziner. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Hmc Architects | 201 to 500 | | Co Architects | 51 to 200 | | Steinberg Hart | 51 to 200 | | Valerio Architects | 51 to 200 | | Marmol Radziner | 51 to 200 | | Nadel Architects | 51 to 200 | | Saiful Bouquet Structural Engineers | 51 to 200 | | Ac Martin | 51 to 200 | | Jgm | 51 to 200 | | Lusive Decor | 51 to 200 | | Connect Homes | 51 to 200 | | Ucla Architecture And Urban Design | 51 to 200 | | Rios Clementi Hale Studios | 51 to 200 | | Johnson Fain | 51 to 200 | | Gruen Associates | 51 to 200 | | Healthy Building Certificate | 51 to 200 | | Relativity Architects | 51 to 200 | | Dutton Architects | 51 to 200 | | Wolcott Architecture | 11 to 50 | | Blend Aec | 11 to 50 | | Studio-Mla | 11 to 50 | | Michael Maltzan Architecture | 11 to 50 | | Blt Built Design Awards | 11 to 50 | | Rac | 11 to 50 | | Zenerate | 11 to 50 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## What do architecture firms in Los Angeles do? Architecture and Planning is a broad label. The most common NAICS codes among them are 541310 (50%), 541490 (10%) and 236115 (5%). **Figure: What architecture firms in Los Angeles do.** Bars for the share of counted architecture firms with each code: 541310 50%, 541490 10%, 236115 5%, 335132 5%, 423830 5%, 459120 5%, 541330 5%. *Share of counted architecture firms in Los Angeles by their NAICS code.* [NAICS 541310](https://enrich.chat/naics/541310/)[NAICS 236115](https://enrich.chat/naics/236115/)[NAICS 335132](https://enrich.chat/naics/335132/)[NAICS 459120](https://enrich.chat/naics/459120/) ## How old are they? Most were founded in the 2000s (27%), then the 2010s (23%). **Figure: When architecture firms in Los Angeles were founded.** Eight columns for the share of counted architecture firms in Los Angeles founded in each era: Before 1960 6%, 1960s 3%, 1970s 4%, 1980s 17%, 1990s 17%, 2000s 27%, 2010s 23%, 2020s 4%. *Share of counted architecture firms in Los Angeles by the era they were founded in, for the ones that list a founding year.* ## How architecture firms compare - 88% of architecture firms in Los Angeles have 50 or fewer employees, against 71% across other cities on this site. - 27% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at architecture firms in Los Angeles? The people to talk to are usually principals and operations leaders. Build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the architecture firms in Los Angeles, CA ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the principals and operations leaders at architecture firms in Los Angeles, CA, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Other industries in Los Angeles: [Advertising Agencies](https://enrich.chat/companies-in/los-angeles-ca/advertising-services/)[Software Companies](https://enrich.chat/companies-in/los-angeles-ca/software-development/)[Real Estate Companies](https://enrich.chat/companies-in/los-angeles-ca/real-estate/)[Technology and Internet Companies](https://enrich.chat/companies-in/los-angeles-ca/technology-information-and-internet/)[Construction Companies](https://enrich.chat/companies-in/los-angeles-ca/construction/)[IT Services Companies](https://enrich.chat/companies-in/los-angeles-ca/it-services-and-it-consulting/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/los-angeles-ca/hospitals-and-health-care/)[Financial Services Companies](https://enrich.chat/companies-in/los-angeles-ca/financial-services/)[Consulting Firms](https://enrich.chat/companies-in/los-angeles-ca/business-consulting-and-services/)[Nonprofit Organizations](https://enrich.chat/companies-in/los-angeles-ca/non-profit-organizations/)[Law Firms](https://enrich.chat/companies-in/los-angeles-ca/law-practice/)[Marketing Agencies](https://enrich.chat/companies-in/los-angeles-ca/marketing-services/)[Manufacturers](https://enrich.chat/companies-in/los-angeles-ca/manufacturing/)[Wholesale Distributors](https://enrich.chat/companies-in/los-angeles-ca/wholesale/)[Design Firms](https://enrich.chat/companies-in/los-angeles-ca/design-services/)[Legal Services Firms](https://enrich.chat/companies-in/los-angeles-ca/legal-services/)[Colleges and Universities](https://enrich.chat/companies-in/los-angeles-ca/higher-education/)[Staffing and Recruiting Firms](https://enrich.chat/companies-in/los-angeles-ca/staffing-and-recruiting/)[Education Organizations](https://enrich.chat/companies-in/los-angeles-ca/education-administration-programs/)[All of Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/) Architecture Firms in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/architecture-and-planning/)[San Francisco, CA](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/)[Chicago, IL](https://enrich.chat/companies-in/chicago-il/architecture-and-planning/)[Seattle, WA](https://enrich.chat/companies-in/seattle-wa/architecture-and-planning/)[Denver, CO](https://enrich.chat/companies-in/denver-co/architecture-and-planning/)[Boston, MA](https://enrich.chat/companies-in/boston-ma/architecture-and-planning/)[San Diego, CA](https://enrich.chat/companies-in/san-diego-ca/architecture-and-planning/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/architecture-and-planning/)[Philadelphia, PA](https://enrich.chat/companies-in/philadelphia-pa/architecture-and-planning/)[Portland, OR](https://enrich.chat/companies-in/portland-or/architecture-and-planning/) ## Frequently asked questions ### Which are the biggest architecture firms in Los Angeles? Among those counted, they include Hmc Architects, Co Architects, Steinberg Hart, Valerio Architects and Marmol Radziner, ranked by headcount range. ### How big are architecture firms in Los Angeles? 88% of those counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Which companies count as architecture and planning? Companies whose public profile lists Architecture and Planning as their industry and whose headquarters are in Los Angeles, CA. ## Try this prompt Find the people at architecture firms in Los Angeles ```text Use www.enrich.chat to find the principals and operations leaders at architecture firms in Los Angeles, CA, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Advertising Agencies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/advertising-services/) - [Software Companies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/software-development/) - [Real Estate Companies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/real-estate/) - [Technology and Internet Companies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/technology-information-and-internet/) - [Architecture Firms in New York](https://enrich.chat/companies-in/new-york-ny/architecture-and-planning/) - [Architecture Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/) - [Architecture Firms in Chicago](https://enrich.chat/companies-in/chicago-il/architecture-and-planning/) - [Architecture Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/architecture-and-planning/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)