California contractor licence #395633

Tanko Bros INC

Tanko Bros INC holds California contractor licence 395633 (Well Drilling) in Sonora, Tuolumne County. Status: Active · expires Nov 30, 2028.

Activelicence status

2028-11expires Nov 30, 2028

$25,000contractor's bond

Insuredworkers' comp

What this means

The licence is active: CSLB lists its status as clear. That means no suspension is on file; it does not rate the quality of the work.
Contractor's bond: $25,000 with Ohio Casualty Insurance Company (The). The bond is there to pay consumers and workers harmed by licence-law violations; it is not liability insurance and it does not guarantee the work.
Workers' comp: Workers' Compensation Insurance with State Compensation Insurance Fund, policy through Feb 1, 2027.

Watch this licence: $9/month. We email you when CSLB's file shows a change to this licence's status, bond, workers' comp or expiry. Checked every Monday and Thursday. Cancel any time.

Watch this licence

Licence details

Licence number	395633
Business name (as CSLB lists it)	TANKO BROS INC
Business type	Corporation
Status	Active
Issued	Nov 12, 1980
Expires	Nov 30, 2028
City / county / ZIP	Sonora / Tuolumne / 95370
Business phone	(209) 532 7797
Contractor's bond surety	Ohio Casualty Insurance Company (The)
Bond amount	$25,000
Bond number	365375C
Bond effective	Jan 1, 2023
Workers' comp	Workers' Compensation Insurance
Workers' comp insurer	State Compensation Insurance Fund
Workers' comp effective	Feb 1, 2019
Workers' comp expires	Feb 1, 2027
CSLB record last updated	Oct 26, 2026

Classifications

C-57 Well Drilling

Change history

Jan 1, 2023Current contractor's bond took effect (Ohio Casualty Insurance Company (The))
Feb 1, 2019Current workers' comp record took effect
Nov 12, 1980Licence issued

Changes come from comparing successive copies of CSLB's public licence master file (refreshed twice a week) since October 2026, plus the dates printed on the current record.

Need a bond or workers' comp quote?

If this is your licence and you need a contractor's bond, a replacement bond or workers' comp, request quotes from licensed providers. Free, no obligation.

Check the official record (free): CSLB licence 395633 on cslb.ca.gov. Always confirm there before you hire or sign.

Rasengan Data is a private service, not CSLB. This page is built from the public CSLB licence master file as published; it may lag the live CSLB record by a few days. Not legal advice. Is this your licence and something looks wrong? CSLB's record is the source; email rasengan.win@gmail.com about this page.