Home / California licenses / #947504

BUILDING EFFICIENCY INC

CLEAR California contractor license #947504

Monitor this license

Free plan: up to 5 licenses. Paid plans cover additional licenses. Sign in to activate instantly, or confirm by email.

LicenseCurrent is an independent service. CSLB public license and personnel files. Missing records are not evidence of revocation. Verify with CSLB.
License overview
947504
CLEAR
2010-05-18
2028-05-31
SAN FRANCISCO, CA 94122
***-***-**** · Click to see numberHide phone number(415) 831 4535
Classifications
  • ASB — CSLB classification
  • B — CSLB classification
  • C-10 — Electrical
  • C-20 — Warm-Air Heating, Ventilating and Air-Conditioning
  • C-36 — Plumbing
Bond & workers’ compensation
AMERICAN CONTRACTORS INDEMNITY COMPANY
100309971
Workers' Compensation Insurance
2027-08-12
Associated personnel
******** · Click to see associated personnelHide associated personnel
  • HAMBURGER DAVID KEOLA · Responsible Managing Officer/Chief Executive Officer/President · ASB
  • HAMBURGER DAVID KEOLA · Responsible Managing Officer/Chief Executive Officer/President · C-36
  • HAMBURGER DAVID KEOLA · Responsible Managing Officer/Chief Executive Officer/President · C-10
  • HAMBURGER DAVID KEOLA · Responsible Managing Officer/Chief Executive Officer/President · B
  • HAMBURGER DAVID KEOLA · Responsible Managing Officer/Chief Executive Officer/President · C-20

Source record last updated: 2026-04-17 00:00:00.