Prothious
Construction · West Hollywood, California
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Products & Services
About Prothious
Steel connection design and structural steel detailing construction management from 1,500 plus highly qualified engineers and architects. Prothious is listed as a company operating in Industrial construction, employing 21-50 people, reporting $5M-$10M in annual revenue, classified under Engineering Services and based in West Hollywood, California, United States.
Its primary NAICS classification is 541330 (Engineering Services). Prothious is one of 26,724 Construction companies listed in California.
Business Contact Information
- Phone
- +1 (310) 6915889
- Website
- http://www.prothious.com
- Address
- 8542 Hollywood Blvd, West Hollywood, California, 90069, United States
Industry & Classification
- Industry
- Construction
- Sector
- Construction
- Segment
- Industrial construction
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5413Architectural, Engineering, and Related Services
- 541330Engineering Services
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 871Engineering, Architectural, And Surveying
- 8711Engineering Services
Company Details
- Employees
- 48 (21-50)
- Annual Revenue
- $9.6M ($5M-$10M)
Prothious: frequently asked questions
What does Prothious do?
Steel connection design and structural steel detailing construction management from 1,500 plus highly qualified engineers and architects.
Where is Prothious located?
Prothious is headquartered at 8542 Hollywood Blvd, West Hollywood, California, 90069, United States.
How many employees does Prothious have?
Prothious has about 48 employees (the 21-50 range).
What is Prothious's annual revenue?
Prothious's annual revenue is estimated at $9.6M (the $5M-$10M range).
What industry is Prothious in?
Prothious is in the Construction / Construction industry, and its primary NAICS code is 541330 (Engineering Services).
How can I contact Prothious?
Its website is www.prothious.com and its phone number is +1 (310) 6915889.
What companies are similar to Prothious?
Other large construction companies in California include Hyundai Engineering & Construction Co. Ltd, RSK Group, Takenaka Corp and Daewoo Construction.
Largest construction companies in California
Largest companies in California
Largest construction companies
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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