> 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/oakland-ca/construction/ # Construction Companies in Oakland, CA The bigger construction companies headquartered in Oakland, 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 Oakland, CA, the biggest by headcount range include Mcguire And Hester, Condon-Johnson & Associates and Broadway Mechanical-Contractors. They are mostly very small: 84% have 50 or fewer employees. ## Which construction companies are in Oakland? Among the companies whose public profile lists Construction as their industry and Oakland, CA as their headquarters, the biggest by headcount range include Mcguire And Hester, Condon-Johnson & Associates, Broadway Mechanical-Contractors, Planit-Inc and Bayview Services. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Mcguire And Hester | 201 to 500 | | Condon-Johnson & Associates | 201 to 500 | | Broadway Mechanical-Contractors | 201 to 500 | | Planit-Inc | 201 to 500 | | Bayview Services | 201 to 500 | | A&b Construction | 51 to 200 | | D-Line Constructors | 51 to 200 | | Habitat For Humanity East Bay Silicon Valley | 51 to 200 | | Proven Management | 51 to 200 | | Mn Builders | 51 to 200 | | Anderson Commercial Flooring | 51 to 200 | | Design Workshops | 51 to 200 | | George E. Masker | 51 to 200 | | Fidelity Roof | 51 to 200 | | Allied Fire Protection | 51 to 200 | | Right Away Redy Mix | 51 to 200 | | Join | 11 to 50 | | Urban Machine | 11 to 50 | | Bbi Construction | 11 to 50 | | Cmaa Northern California Chapter | 11 to 50 | | Bundle | 11 to 50 | | Mar Con Builders | 11 to 50 | | Dc Construction | 11 to 50 | | Zcon Builders | 11 to 50 | | Pacific Galvanizing | 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 construction companies in Oakland do? Construction is a broad label. The most common NAICS codes among them are 236220 (15%), 238220 (15%) and 238990 (15%). **Figure: What construction companies in Oakland do.** Bars for the share of counted construction companies with each code: 236220 15%, 238220 15%, 238990 15%, 237310 8%, 238160 8%, 238210 8%, 238320 8%. *Share of counted construction companies in Oakland by their NAICS code.* [NAICS 236220](https://enrich.chat/naics/236220/)[NAICS 238220](https://enrich.chat/naics/238220/)[NAICS 238990](https://enrich.chat/naics/238990/)[NAICS 237310](https://enrich.chat/naics/237310/)[NAICS 238160](https://enrich.chat/naics/238160/)[NAICS 238210](https://enrich.chat/naics/238210/)[NAICS 238320](https://enrich.chat/naics/238320/) ## How big are they? 84% of the construction companies counted in Oakland 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 Oakland.** Seven columns for the share of counted construction companies in Oakland in each employee range: 11 to 50 84%, 51 to 200 11%, 201 to 500 5%, 501 to 1,000 0%, 1,001 to 5,000 0%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted construction companies in Oakland in each employee range.* ## How construction companies compare - 84% of construction companies in Oakland have 50 or fewer employees, against 71% across other cities on this site. ## How do you reach the people at construction companies in Oakland? 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 Oakland, 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 Oakland, 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 Oakland: [Nonprofit Organizations](https://enrich.chat/companies-in/oakland-ca/non-profit-organizations/)[Software Companies](https://enrich.chat/companies-in/oakland-ca/software-development/)[Real Estate Companies](https://enrich.chat/companies-in/oakland-ca/real-estate/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/oakland-ca/hospitals-and-health-care/)[Education Organizations](https://enrich.chat/companies-in/oakland-ca/education-administration-programs/)[All of Oakland](https://enrich.chat/companies-in/oakland-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 Oakland? Among those counted, they include Mcguire And Hester, Condon-Johnson & Associates, Broadway Mechanical-Contractors, Planit-Inc and Bayview Services, ranked by headcount range. ### How big are construction companies in Oakland? 84% 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 Oakland, CA. ## Try this prompt Find the people at construction companies in Oakland ```text Use www.enrich.chat to find the owners, operations and procurement leaders at construction companies in Oakland, CA, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Nonprofit Organizations in Oakland](https://enrich.chat/companies-in/oakland-ca/non-profit-organizations/) - [Software Companies in Oakland](https://enrich.chat/companies-in/oakland-ca/software-development/) - [Real Estate Companies in Oakland](https://enrich.chat/companies-in/oakland-ca/real-estate/) - [Hospitals and Health Care Organizations in Oakland](https://enrich.chat/companies-in/oakland-ca/hospitals-and-health-care/) - [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/)