> 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/san-francisco-ca/construction/ # Construction Companies in San Francisco, CA The bigger construction companies headquartered in San Francisco, 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 construction companies counted in San Francisco, CA, the biggest by headcount range include Webcor, Malcolm Drilling and Hathaway Dinwiddie. They are mostly very small: 78% have 50 or fewer employees. ## Which construction companies are in San Francisco? Among the companies whose public profile lists Construction as their industry and San Francisco, CA as their headquarters, the biggest by headcount range include Webcor, Malcolm Drilling, Hathaway Dinwiddie, Build Group and Glumac. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Webcor | 501 to 1,000 | | Malcolm Drilling | 501 to 1,000 | | Hathaway Dinwiddie | 501 to 1,000 | | Build Group | 201 to 500 | | Glumac | 201 to 500 | | Nibbi Brothers General Contractors | 201 to 500 | | Plant Construction | 201 to 500 | | Cahill Contractors | 201 to 500 | | Bcci Construction | 201 to 500 | | Vec | 201 to 500 | | Mcmillan Electric | 201 to 500 | | Pacific Structures | 201 to 500 | | Buildout California | 201 to 500 | | Pgh Wong Engineering | 201 to 500 | | Cbf Electric & Data | 201 to 500 | | Metro Electric | 201 to 500 | | Skyline Capital Builders | 201 to 500 | | Harrison Drywall | 201 to 500 | | Homebound | 51 to 200 | | Canvas | 51 to 200 | | Herrero Builders | 51 to 200 | | Made Renovation | 51 to 200 | | Principal Builders | 51 to 200 | | Guzman Construction Group | 51 to 200 | | Epc Consultants | 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. ## What do construction companies in San Francisco do? Construction is a broad label. The most common NAICS codes among them are 236115 (16%), 236220 (12%) and 238210 (11%). **Figure: What construction companies in San Francisco do.** Bars for the share of counted construction companies with each code: 236115 16%, 236220 12%, 238210 11%, 237310 7%, 238110 4%, 238990 4%, 541330 4%. *Share of counted construction companies in San Francisco by their NAICS code.* [NAICS 236115](https://enrich.chat/naics/236115/)[NAICS 236220](https://enrich.chat/naics/236220/)[NAICS 238210](https://enrich.chat/naics/238210/)[NAICS 237310](https://enrich.chat/naics/237310/)[NAICS 238110](https://enrich.chat/naics/238110/)[NAICS 238990](https://enrich.chat/naics/238990/) ## How big are they? 78% of the construction companies counted in San Francisco 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 construction companies in San Francisco.** Seven columns for the share of counted construction companies in San Francisco in each employee range: 11 to 50 78%, 51 to 200 16%, 201 to 500 5%, 501 to 1,000 1%, 1,001 to 5,000 0%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted construction companies in San Francisco in each employee range.* ## How old are they? Most were founded in the 2010s (36%), then the 1990s (15%). **Figure: When construction companies in San Francisco were founded.** Eight columns for the share of counted construction companies in San Francisco founded in each era: Before 1960 7%, 1960s 4%, 1970s 10%, 1980s 8%, 1990s 15%, 2000s 15%, 2010s 36%, 2020s 5%. *Share of counted construction companies in San Francisco by the era they were founded in, for the ones that list a founding year.* ## How construction companies compare - 41% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at construction companies in San Francisco? 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 construction companies in San Francisco, 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 owners, operations and procurement leaders at construction companies in San Francisco, 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 San Francisco: [Software Companies](https://enrich.chat/companies-in/san-francisco-ca/software-development/)[Technology and Internet Companies](https://enrich.chat/companies-in/san-francisco-ca/technology-information-and-internet/)[IT Services Companies](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/)[Financial Services Companies](https://enrich.chat/companies-in/san-francisco-ca/financial-services/)[Advertising Agencies](https://enrich.chat/companies-in/san-francisco-ca/advertising-services/)[Real Estate Companies](https://enrich.chat/companies-in/san-francisco-ca/real-estate/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/san-francisco-ca/hospitals-and-health-care/)[Consulting Firms](https://enrich.chat/companies-in/san-francisco-ca/business-consulting-and-services/)[Nonprofit Organizations](https://enrich.chat/companies-in/san-francisco-ca/non-profit-organizations/)[Venture Capital and Private Equity Firms](https://enrich.chat/companies-in/san-francisco-ca/venture-capital-and-private-equity-principals/)[Design Firms](https://enrich.chat/companies-in/san-francisco-ca/design-services/)[Architecture Firms](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/)[Staffing and Recruiting Firms](https://enrich.chat/companies-in/san-francisco-ca/staffing-and-recruiting/)[Law Firms](https://enrich.chat/companies-in/san-francisco-ca/law-practice/)[Cybersecurity Companies](https://enrich.chat/companies-in/san-francisco-ca/computer-and-network-security/)[Biotechnology Companies](https://enrich.chat/companies-in/san-francisco-ca/biotechnology-research/)[Colleges and Universities](https://enrich.chat/companies-in/san-francisco-ca/higher-education/)[Education Organizations](https://enrich.chat/companies-in/san-francisco-ca/education-administration-programs/)[Legal Services Firms](https://enrich.chat/companies-in/san-francisco-ca/legal-services/)[All of San Francisco](https://enrich.chat/companies-in/san-francisco-ca/) Construction Companies in other cities: [Houston, TX](https://enrich.chat/companies-in/houston-tx/construction/)[New York, NY](https://enrich.chat/companies-in/new-york-ny/construction/)[Phoenix, AZ](https://enrich.chat/companies-in/phoenix-az/construction/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/construction/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/construction/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/construction/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/construction/)[Denver, CO](https://enrich.chat/companies-in/denver-co/construction/)[Chicago, IL](https://enrich.chat/companies-in/chicago-il/construction/)[San Diego, CA](https://enrich.chat/companies-in/san-diego-ca/construction/) ## Frequently asked questions ### Which are the biggest construction companies in San Francisco? Among those counted, they include Webcor, Malcolm Drilling, Hathaway Dinwiddie, Build Group and Glumac, ranked by headcount range. ### How big are construction companies in San Francisco? 78% 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 construction? Companies whose public profile lists Construction as their industry and whose headquarters are in San Francisco, CA. ## Try this prompt Find the people at construction companies in San Francisco ```text Use www.enrich.chat to find the owners, operations and procurement leaders at construction companies in San Francisco, CA, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Software Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/software-development/) - [Technology and Internet Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/technology-information-and-internet/) - [IT Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/) - [Financial Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/financial-services/) - [Construction Companies in Houston](https://enrich.chat/companies-in/houston-tx/construction/) - [Construction Companies in New York](https://enrich.chat/companies-in/new-york-ny/construction/) - [Construction Companies in Phoenix](https://enrich.chat/companies-in/phoenix-az/construction/) - [Construction Companies in Dallas](https://enrich.chat/companies-in/dallas-tx/construction/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)