> 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/sic/1541/ # SIC code 1541: Industrial building construction The companies classified under SIC 1541, where they are based, how big they are and how the code maps to NAICS. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** SIC 1541 is the Standard Industrial Classification code for Industrial building construction, in division C (Construction). The companies counted under it are mostly very small: 53% have 50 or fewer employees. ## What is SIC 1541? SIC 1541 is the Standard Industrial Classification code for Industrial building construction. It sits in division C, Construction. The first two digits name the major group, and the last two narrow it to a single industry. Most of the companies counted also carry NAICS 236220 (60%). - 53% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (76%). Within the US, California is the biggest state (9%). - Most were founded in the 2000s (19%), then the 1990s (16%). **Figure: How SIC 1541 is built.** The code 1541 split into its parts: major group 15, then industry group and industry. It sits in division C, Construction. *The four digits of SIC 1541.* ## Which companies are classified under SIC 1541? The biggest by headcount range include Ucc Holding, Aecon Group, Quanta Services, Ncc and Brown & Root Industrial Services. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Ucc Holding | Lusail City, Qatar | 10,001+ | | Aecon Group | Toronto, Canada | 10,001+ | | Quanta Services | Houston, TX | 10,001+ | | Ncc | Hyderabad, India | 5,001 to 10,000 | | Brown & Root Industrial Services | Baton Rouge, LA | 5,001 to 10,000 | | Construtora Tenda | Sao Paulo, Brazil | 1,001 to 5,000 | | Clayco | Chicago, IL | 1,001 to 5,000 | | Emccamp Residencial | Belo Horizonte, Brazil | 1,001 to 5,000 | | Big-D Construction | Salt Lake City, UT | 1,001 to 5,000 | | Alberici Constructors | St. Louis, MO | 1,001 to 5,000 | | Ccc Group | San Antonio, TX | 1,001 to 5,000 | | Tutor Perini Building | Henderson, NV | 1,001 to 5,000 | | Kinsley Construction | York, PA | 1,001 to 5,000 | | Parkway International Contracting | Dubai, United Arab Emirates | 1,001 to 5,000 | | Matrix Nac | Tulsa, OK | 1,001 to 5,000 | | Palacios Marine & Industrial Coatings | Port Lavaca, TX | 1,001 to 5,000 | | Jota Ele Construções Civis S A | Curitiba, Brazil | 1,001 to 5,000 | | Chandos Construction | Edmonton, Canada | 501 to 1,000 | | Keeley Construction Group | St. Louis, MO | 501 to 1,000 | | Graycor | Oakbrook Terrace, IL | 501 to 1,000 | | Samet | Greensboro, NC | 501 to 1,000 | | Scon Projects | Pune, India | 501 to 1,000 | | The Hagerman Group | Fort Wayne, IN | 501 to 1,000 | | Aug. Prien Bauunternehmung GmbH & Co. Kg | Hamburg, Germany | 501 to 1,000 | | Brycon | Rio Rancho, NM | 501 to 1,000 | 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. ## Where are SIC 1541 companies based? The largest groups are headquartered in the United States (76%), Brazil (9%) and Canada (6%). **Figure: Where companies in SIC 1541 are based.** Bars for the share of counted companies in SIC 1541 headquartered in each country: United States 76%, Brazil 9%, Canada 6%, Germany 4%, India 2%. *Share of counted companies in SIC 1541 by headquarters country.* Within the United States, California (9%), Texas (9%) and Florida (4%) lead. **Figure: US headquarters of companies in SIC 1541, by state.** A tile map of the United States shaded by the share of counted US companies in SIC 1541 headquartered in each state. The largest are California 9%, Texas 9%, Florida 4%. *Share of counted US companies in SIC 1541 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for SIC 1541? 53% of them 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 companies in SIC 1541.** Seven columns for the share of counted companies in SIC 1541 in each employee range: 11 to 50 53%, 51 to 200 30%, 201 to 500 9%, 501 to 1,000 4%, 1,001 to 5,000 3%, 5,001 to 10,000 0%, 10,001+ 1%. *Share of counted companies in SIC 1541 in each employee range.* ## How old are SIC 1541 companies? Most were founded in the 2000s (19%), then the 1990s (16%). **Figure: When companies in SIC 1541 were founded.** Eight columns for the share of counted companies in SIC 1541 founded in each era: Before 1960 16%, 1960s 9%, 1970s 13%, 1980s 14%, 1990s 16%, 2000s 19%, 2010s 13%, 2020s 0%. *Share of counted companies in SIC 1541 by the era they were founded in, for the ones that list a founding year.* ## How SIC 1541 compares - 14% were founded in 2010 or later, against 30% across all NAICS codes on this site. ## SIC 1541 and the NAICS system NAICS replaced SIC as the U.S. federal standard in 1997, but the two do not line up one to one. These are the NAICS codes seen most among the companies counted under SIC 1541. | Code | Title | Share of counted | | --- | --- | --- | | [NAICS 236220](https://enrich.chat/naics/236220/) | Commercial and Institutional Building Construction | 60% | | [NAICS 236210](https://enrich.chat/naics/236210/) | Industrial Building Construction | 18% | | [NAICS 237310](https://enrich.chat/naics/237310/) | Highway, Street, and Bridge Construction | 4% | | NAICS 561110 | Office Administrative Services | 3% | | [NAICS 238990](https://enrich.chat/naics/238990/) | All Other Specialty Trade Contractors | 2% | ## Where SIC codes come from SIC was created in the 1930s and is now historical: the U.S. government replaced it with NAICS in 1997. It is still widely used, and the SEC still assigns a SIC code to every company that files on EDGAR. The full list is in the [SIC manual](https://www.osha.gov/data/sic-manual) that OSHA hosts, and the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html) explains how the two relate. ## How do you reach the people at SIC 1541 companies? The people to talk to are usually operations and procurement leaders. You can 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 SIC code 1541 (Industrial building construction) ``` ### 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 operations and procurement leaders at companies with SIC code 1541, 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 ``` ## Frequently asked questions ### What is SIC code 1541? SIC 1541 is the code for Industrial building construction, in division C (Construction). ### What is the NAICS code for SIC 1541 (Industrial building construction)? 60% of the companies counted carry NAICS 236220 (Commercial and Institutional Building Construction), but the two systems do not map one to one. ### Which companies are classified under SIC 1541? The biggest by headcount range include Ucc Holding, Aecon Group, Quanta Services, Ncc and Brown & Root Industrial Services. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 1541? 53% 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. ### Is SIC still used? Yes. The U.S. government replaced SIC with NAICS in 1997, but SIC codes are still common in business databases, and the SEC still uses them on EDGAR. ## Try this prompt Find the people at SIC 1541 companies ```text Use www.enrich.chat to find the operations and procurement leaders at companies with SIC code 1541, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)