General Contractor in Claremont, CA. B
Glenn David Mattern appears in California license records as a general contractor based in Claremont, CA. The record lists a B license (#1136410) with status “Clear”. It was first issued on 2025-04-22, 1 year ago. It is listed as valid through 2027-04-30. A contractor bond of $25,000 is on file. Workers' comp on file: Exempt.
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
This listing was created from public license records. The owner hasn’t claimed it yet — claim it now and we’ll build you a free professional website at bidroom.io/pro/glenn-david-mattern.
Contact info is revealed to anyone with a free Bidroom account. Create yours to unlock contact details across the Bidroom directory — then subscribe if you'd like to message verified pros directly inside the app.
Create a free account Or subscribe to message in-appCheck license #1136410 on the California CSLB lookup and the BBB the day you hire; status can change after Bidroom's last import (2026-04-09).
Glenn David Mattern is a general contractor based in Claremont, California. Their license classification is B. Listed specialties: B.
Yes. Glenn David Mattern holds California CSLB license #1136410 (status: Clear). Verify the current status on California CSLB before hiring.
Glenn David Mattern is based in Claremont, CA 91711.
Contact information (phone, email, website) is shown to anyone with a free Bidroom account. Create a free account to reveal Glenn David Mattern's contact details, then subscribe if you'd like to message them in-app.
The fastest way is to post your project on Bidroom — Glenn David Mattern and up to 2 other verified general contractors in Claremont can bid on it, and every quote includes itemized pricing + a written scope of work.
Not yet. This listing was created from public California license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.
Contractor vetting checklist · Cost guide · Look up this license at the state board