Every new California business filing, every dayRJB Builders
JOON Y HUH, Registered Agent
RJB Builders offers full residential and commercial construction services including remodels, framing, decks, kitchens, bathrooms, and ADUs. Based in California.
Filed February 5, 2026 · South San Francisco, CA · San Mateo County
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California Secretary of State (bizfile Online) · Entity B20260065131 · Retrieved May 14, 2026
About RJB Builders
RJB HOUSE CORP. was filed in California on February 5, 2026, as a construction contractor for residential and commercial work. The owner, Joon Y Huh, filed personally as the registered agent. The company's domain was registered on GoDaddy about 4 years before the filing, and its modern website is live. We estimate revenue between $1 million and $10 million and 6 to 25 employees. No annual report or EIN on file yet.
- Domain registered 4 years before the California filing.
- Owner filed personally as the registered agent.
- Modern website is live and verified.
- We estimate $1M-$10M revenue and 6-25 employees.
- No annual report or EIN on file yet.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 24, 2026.
One of 8 new businesses registered in South San Francisco in February 2026, and the only construction contractor business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was RJB Builders registered?
RJB Builders was registered as Corp on February 5, 2026 in California.
Where is RJB Builders located?
RJB Builders is based in South San Francisco, CA, 94080, in San Mateo County.
What type of business is RJB Builders?
RJB Builders is classified as a construction contractor business (residential and commercial construction).
Does RJB Builders have an EIN on file?
No EIN was found on file for RJB Builders at the time of registration.
Who Sells to This Business
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