How can I verify this license myself?

You can check the status directly at the California Contractors State License Board official lookup page.

What does the C-39 classification cover?

The C-39 license is for roofing contractors. This classification requires the business to have workers' compensation on file, which is confirmed for this record.

When was this business first licensed and what does active mean?

The record shows the first license date is 2015. Active status means the license is currently valid and not suspended or revoked.

When does the license expire and why check the status?

The license expires on 2027-06-30. Checking the status ensures the contractor is authorized to work today and has not had their license revoked.

What should I check before signing a contract?

Verify the license status yourself, get the full scope of work in a written quote, and ask for local addresses of past jobs.

Home › Roofing › California › Black Diamond Waterproofing

Black Diamond Waterproofing

Roofing contractor · Lake Forest, CA 92630 · record last checked July 11, 2026

License active — checked July 11, 2026

License

1005043

C-39 Roofing Contractor

Status

active

in good standing per state record

First licensed

2015

per California Contractors State License Board (CSLB)

Expires

June 30, 2027

renewal required

Black Diamond Waterproofing is located in Lake Forest, CA, and holds an active C-39 Roofing Contractor license issued by the CSLB. The public record shows the license was first issued in 2015 and expires on 2027-06-30.

What this record does — and doesn't — tell you

A license confirms the state issued permission to operate but does not indicate work quality or customer satisfaction. You must check the state records yourself to see the current status and expiration date.

Verify this license yourself (30 seconds)

Don't take our word for it — or anyone's. Search license 1005043 at the official California Contractors State License Board (CSLB) lookup and confirm the status is current before you sign anything.

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Business phone of record

(949) 563-0966 (from the California Contractors State License Board (CSLB) license file — call them directly)

Common questions

How can I verify this license myself?: You can check the status directly at the California Contractors State License Board official lookup page.
What does the C-39 classification cover?: The C-39 license is for roofing contractors. This classification requires the business to have workers' compensation on file, which is confirmed for this record.
When was this business first licensed and what does active mean?: The record shows the first license date is 2015. Active status means the license is currently valid and not suspended or revoked.
When does the license expire and why check the status?: The license expires on 2027-06-30. Checking the status ensures the contractor is authorized to work today and has not had their license revoked.
What should I check before signing a contract?: Verify the license status yourself, get the full scope of work in a written quote, and ask for local addresses of past jobs.

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Source: California Contractors State License Board (CSLB), license file dated July 11, 2026. Safe Home Experts re-checks California records on a fixed schedule and unpublishes lapsed licenses. This page describes a public record — it is not a review, rating, or endorsement. Corrections: data corrections.