SEI Underground
Sun Valley, California
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About SEI Underground
SEI Underground is listed as a company based in Sun Valley, California, United States, employing 1-5 people, reporting $0M-$1M in annual revenue and classified under Water and Sewer Line and Related Structures Construction.
Its primary NAICS classification is 237110 (Water and Sewer Line and Related Structures Construction). SEI Underground is one of 7,660,543 companies listed in California.
Business Contact Information
- Phone
- +1 (818) 8340410
- Address
- 11861 Branford St, Sun Valley, California, 91352, United States
Industry & Classification
NAICS Codes
- 23Construction
- 2371Utility System Construction
- 237110Water and Sewer Line and Related Structures Construction
SIC Codes
- 16Heavy Construction Other Than Building Construction Contractors
- 162Heavy Construction, Except Highway And Street
- 1623Water and Sewer Line and Related Structures Construction
Company Details
- Employees
- 5 (1-5)
- Annual Revenue
- $234,000 ($0M-$1M)
SEI Underground: frequently asked questions
What does SEI Underground do?
SEI Underground is listed as a company based in Sun Valley, California, United States, employing 1-5 people, reporting $0M-$1M in annual revenue and classified under Water and Sewer Line and Related Structures Construction.
Where is SEI Underground located?
SEI Underground is headquartered at 11861 Branford St, Sun Valley, California, 91352, United States.
How many employees does SEI Underground have?
SEI Underground has about 5 employees (the 1-5 range).
What is SEI Underground's annual revenue?
SEI Underground's annual revenue is estimated at $234,000 (the $0M-$1M range).
What industry is SEI Underground in?
SEI Underground's primary NAICS code is 237110 (Water and Sewer Line and Related Structures Construction).
How can I contact SEI Underground?
Its phone number is +1 (818) 8340410.
Largest companies in California
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Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
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