California contractor licence #729664

Hathaway Dinwiddie Construction Company

Hathaway Dinwiddie Construction Company holds California contractor licence 729664 (General Engineering, General Building) in San Francisco, San Francisco County. Status: Active · expires Nov 30, 2026.

Activelicence status

2026-11expires Nov 30, 2026

$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.
It expires in 23 days (Nov 30, 2026). California licences renew every two years; work done after expiry without renewal is unlicensed.
Contractor's bond: $25,000 with Travelers Casualty And Surety Company Of America. 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 American Guarantee And Liability Insurance Company, policy through Oct 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.

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Licence details

Licence number	729664
Business name (as CSLB lists it)	HATHAWAY DINWIDDIE CONSTRUCTION COMPANY
Business type	Corporation
Status	Active
Secondary status	Renewal Recived
Issued	Nov 15, 1996
Expires	Nov 30, 2026
City / county / ZIP	San Francisco / San Francisco / 94111
Business phone	(415) 986 2718
Contractor's bond surety	Travelers Casualty And Surety Company Of America
Bond amount	$25,000
Bond number	400SU7172
Bond effective	Jan 1, 2023
Workers' comp	Workers' Compensation Insurance
Workers' comp insurer	American Guarantee And Liability Insurance Company
Workers' comp effective	Oct 1, 2026
Workers' comp expires	Oct 1, 2027
CSLB record last updated	Oct 26, 2026

Classifications

A General Engineering: roads, grading, sewers, pipelines, bridges and similar engineering projects · other general engineering contractors in San Francisco
B General Building: framing and building whole structures, and projects that involve two or more unrelated trades · other general building contractors in San Francisco

Change history

Oct 1, 2026Current workers' comp record took effect
Jan 1, 2023Current contractor's bond took effect (Travelers Casualty And Surety Company Of America)
Nov 15, 1996Licence 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 729664 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.