PROPER PLUMBING SERVICES LLC
Plumbing Contractor license 1100951 issued by the California Contractors State License Board. Status shown as of August 17, 2026.
This license is active. It is valid through April 30, 2028, 622 days from today, according to the most recent CSLB public file.
| License holder | PROPER PLUMBING SERVICES LLC |
|---|---|
| Business name | PROPER PLUMBING SERVICES LLC |
| License type | Plumbing Contractor |
| License number | 1100951 |
| Status today | Active |
| Expiration date | April 30, 2028 |
| City | Castro Valley |
| County of record | Alameda |
| Phone on file | (650) 580 3846 |
| Classifications | C36 |
| Board status | CLEAR |
| Contractor bond | $25,000 |
| Issuing authority | California Contractors State License Board |
| First seen in public file | August 17, 2026 |
| Last confirmed | August 17, 2026 |
How to confirm this yourself
This page reproduces the CSLB public license file, which the agency republishes daily. Before you hire anyone, confirm the record at the source and ask the contractor for proof of insurance separately, since licensing and insurance are not the same thing and the state file does not cover insurance.
Verify at CSLB → File a complaint
There are 363 licensed plumbing contractors on record in Alameda County. Compare them all →