California contractor licence #1148055

Michael Derleth

Michael Derleth holds California contractor licence 1148055 (General Building) in Mariposa, Mariposa County. Status: Active · expires Dec 31, 2027.

Activelicence status

2027-12expires Dec 31, 2027

$25,000contractor's bond

Exemptworkers' 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 Business Alliance Insurance Company. 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. The surety has filed notice to cancel this bond effective Nov 20, 2026; unless a replacement bond is filed, the licence will be suspended on that date.
Workers' comp: exempt. The contractor has told CSLB it has no employees. If a crew shows up on your job, ask for a current workers' comp certificate; a contractor with employees must carry workers' comp.
Our records show 1 change to this licence since we started tracking the CSLB file; see the change history below.

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.

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Licence details

Licence number	1148055
Business name (as CSLB lists it)	MICHAEL DERLETH
Business type	Sole Owner
Status	Active
Issued	Dec 22, 2025
Expires	Dec 31, 2027
City / county / ZIP	Mariposa / Mariposa / 95338
Contractor's bond surety	Business Alliance Insurance Company
Bond amount	$25,000
Bond number	G19033210518
Bond effective	Nov 20, 2025
Bond cancellation date	Nov 20, 2026
Workers' comp	Exempt
Workers' comp effective	Nov 25, 2025
CSLB record last updated	Oct 22, 2026

Classifications

B General Building: framing and building whole structures, and projects that involve two or more unrelated trades · other general building contractors in Mariposa

Change history

Nov 20, 2026Surety filed notice to cancel the contractor's bond (Business Alliance Insurance Company), effective Nov 20, 2026 CSLB's 90-day window to reinstate retroactively runs to about Feb 18, 2027.
Dec 22, 2025Licence issued
Nov 20, 2025Current contractor's bond took effect (Business Alliance Insurance Company)

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 1148055 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.