> 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/naics/236220/california/ # NAICS 236220 companies in California Companies with NAICS code 236220 (Commercial and Institutional Building Construction) headquartered in California, with their cities, sizes and SIC codes. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** The biggest NAICS 236220 companies in California by headcount range include Dpr Construction, Xl Construction and Build Group. NAICS 236220 is the code for Commercial and Institutional Building Construction. Among those counted, they are mostly very small: 69% have 50 or fewer employees. ## Which NAICS 236220 companies are in California? The biggest by headcount range include Dpr Construction, Xl Construction, Build Group, Level 10 Construction and Truebeck Construction. NAICS 236220 is the code for Commercial and Institutional Building Construction. Names link to a company profile where we have one. | Company | City | Employees | | --- | --- | --- | | Dpr Construction | Redwood City | 5,001 to 10,000 | | Xl Construction | Milpitas | 501 to 1,000 | | Build Group | San Francisco | 201 to 500 | | Level 10 Construction | Sunnyvale | 201 to 500 | | Truebeck Construction | San Mateo | 201 to 500 | | Novo Construction | Menlo Park | 201 to 500 | | Deacon Construction | Citrus Heights | 201 to 500 | | Devcon Construction | Milpitas | 201 to 500 | | Cahill Contractors | San Francisco | 201 to 500 | | Bcci Construction | San Francisco | 201 to 500 | | Erickson-Hall Construction | Escondido | 201 to 500 | | Span Construction & Engineering | Madera | 201 to 500 | | Silverline Construction | Gardena | 201 to 500 | | Rodan Builders | Hayward | 201 to 500 | | Uss Cal Builders | Stanton | 201 to 500 | | Bayview Services | Oakland | 201 to 500 | | U.S. Best Repair Service | Irvine | 201 to 500 | | Mirage Builders | Anaheim | 201 to 500 | | W. L. Butler | Redwood City | 51 to 200 | | Harper Construction | San Diego | 51 to 200 | | Kprs Construction Services | Brea | 51 to 200 | | Blach Construction | San Jose | 51 to 200 | | Pacific Building Group | San Diego | 51 to 200 | | Casco Contractors | Irvine | 51 to 200 | | Kcs West | Los Angeles | 51 to 200 | 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. ## Which cities in California? Within California, San Diego (6%), Irvine (3%) and Los Angeles (3%) are the most common headquarters. **Figure: Cities of NAICS 236220 companies in California.** Bars for the share of counted NAICS 236220 companies in California headquartered in each city: San Diego 6%, Irvine 3%, Los Angeles 3%, San Francisco 3%, Anaheim 2%, Brea 2%, Fresno 2%, San Jose 2%. *Share of counted NAICS 236220 companies in California by headquarters city.* ## How big are they? 69% of the NAICS 236220 companies counted in California 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. **Figure: Size of NAICS 236220 companies in California.** Seven columns for the share of counted NAICS 236220 companies in California in each employee range: 11 to 50 69%, 51 to 200 22%, 201 to 500 8%, 501 to 1,000 0%, 1,001 to 5,000 0%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted NAICS 236220 companies in California in each employee range.* ## How old are they? Most were founded in the 2000s (28%), then the 1990s (22%). **Figure: When NAICS 236220 companies in California were founded.** Eight columns for the share of counted NAICS 236220 companies in California founded in each era: Before 1960 7%, 1960s 4%, 1970s 7%, 1980s 21%, 1990s 22%, 2000s 28%, 2010s 11%, 2020s 1%. *Share of counted NAICS 236220 companies in California by the era they were founded in, for the ones that list a founding year.* ## Which SIC codes do they carry? The older SIC system and NAICS do not line up one to one. These are the SIC codes seen most here. **Figure: SIC codes of NAICS 236220 companies in California.** Bars for the share of counted NAICS 236220 companies in California with each code: 1542 74%, 1541 10%, 1521 7%, 1522 7%. *Share of counted NAICS 236220 companies in California by their SIC code.* [SIC 1541](https://enrich.chat/sic/1541/) ## How do you reach the people at these California companies? The people to talk to are usually owners, operations and procurement 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 companies with NAICS code 236220 in California ``` ### 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 owners, operations and procurement leaders at companies with NAICS code 236220 in California, 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 About the code: [NAICS 236220: Commercial and Institutional Building Construction](https://enrich.chat/naics/236220/). About the place: [companies in California](https://enrich.chat/companies-in/california/). NAICS 236220 in other states: [Texas](https://enrich.chat/naics/236220/texas/)[Florida](https://enrich.chat/naics/236220/florida/)[New York](https://enrich.chat/naics/236220/new-york/)[Pennsylvania](https://enrich.chat/naics/236220/pennsylvania/)[Washington](https://enrich.chat/naics/236220/washington/)[North Carolina](https://enrich.chat/naics/236220/north-carolina/)[Virginia](https://enrich.chat/naics/236220/virginia/)[Illinois](https://enrich.chat/naics/236220/illinois/)[Georgia](https://enrich.chat/naics/236220/georgia/)[Ohio](https://enrich.chat/naics/236220/ohio/) Other NAICS codes in California: [NAICS 541511: Custom Computer Programming Services](https://enrich.chat/naics/541511/california/)[NAICS 541512: Computer Systems Design Services](https://enrich.chat/naics/541512/california/)[NAICS 722511: Full-Service Restaurants](https://enrich.chat/naics/722511/california/)[NAICS 541613: Marketing Consulting Services](https://enrich.chat/naics/541613/california/)[NAICS 238220: Plumbing, Heating, and Air-Conditioning](https://enrich.chat/naics/238220/california/)[NAICS 513210: Software Publishers](https://enrich.chat/naics/513210/california/)[NAICS 531210: Offices of Real Estate Agents](https://enrich.chat/naics/531210/california/)[NAICS 524210: Insurance Agencies and Brokerages](https://enrich.chat/naics/524210/california/)[NAICS 621111: Offices of Physicians](https://enrich.chat/naics/621111/california/)[NAICS 541110: Offices of Lawyers](https://enrich.chat/naics/541110/california/) ## Frequently asked questions ### Which NAICS 236220 companies are in California? The biggest by headcount range include Dpr Construction, Xl Construction, Build Group, Level 10 Construction and Truebeck Construction. The page lists 25 with links to their profiles where we have them. ### What is NAICS 236220? NAICS 236220 is the code for Commercial and Institutional Building Construction, in sector 23: Construction. ### Which cities in California have the most? San Diego (6%), Irvine (3%) and Los Angeles (3%) lead among the companies counted. ## Try this prompt Find the people at NAICS 236220 companies in California ```text Use www.enrich.chat to find the owners, operations and procurement leaders at companies with NAICS code 236220 in California, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 236220 in Texas](https://enrich.chat/naics/236220/texas/) - [NAICS 236220 in Florida](https://enrich.chat/naics/236220/florida/) - [NAICS 236220 in New York](https://enrich.chat/naics/236220/new-york/) - [NAICS 236220 in Pennsylvania](https://enrich.chat/naics/236220/pennsylvania/) - [NAICS 541511 in California](https://enrich.chat/naics/541511/california/) - [NAICS 541512 in California](https://enrich.chat/naics/541512/california/) - [NAICS 722511 in California](https://enrich.chat/naics/722511/california/) - [NAICS 541613 in California](https://enrich.chat/naics/541613/california/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)