California contractor license
MACKENBACH JOHN F
- B General Building
MACKENBACH JOHN F is a B General Building contractor in Rolling Hills, Los Angeles County, licensed in California for 38 years (since 1988). As of Jul 27, 2026, the license is active with an expiration date of Aug 31, 2028 on record and a license bond is on file.
MACKENBACH JOHN FB General Building · checked Jul 27, 2026
ActiveLicense number#540055
Licensed sinceAug 30, 1988
Years licensed38 years
Expiration on recordAug 31, 2028
City and countyRolling Hills, Los Angeles County
License bondOn file
ProjectsNone on file
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Source: California Contractors State License Board (CSLB) and City of Los Angeles permit records. Last updated Jul 27, 2026.