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State files updated Oct 30, 2026
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California contractor license

Slater Waterproofing Inc

Slater Waterproofing Inc of Montclair holds California license 373368 (A General Engineering, B General Building, C33 Painting and Decorating, D06 Construction Clean-up, D12 Synthetic Products, D51). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Apr 30, 2027.

Licensed 47 years, longer than 91% of 47 active Montclair general contractors.

Active

Slater Waterproofing Inc, Montclair

License
373368
Class
A General Engineering; B General Building; C33 Painting and Decorating; D06 Construction Clean-up; D12 Synthetic Products; D51
Expires
Apr 30, 2027
Bond
$25,000
Workers' comp
Insured to Oct 1, 2027

CSLB file dated Oct 30, 2026

From the CSLB file dated Oct 30, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

None in the CSLB file dated Oct 30, 2026. Confirm with the board: CSLB license check

What bond, insurance and workers' comp are on file?

Bond
$25,000American Contractors Indemnity Company, from Dec 31, 2024, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredZurich American Insurance Company, from Oct 1, 2026, to Oct 1, 2027

Who is on this license?

Responsible managing officer
Merle M. SlaterSince Feb 8, 1993
Responsible managing officer, CEO and president
Lawrence J. Mc CauleySince May 21, 2001

What work does this license cover?

Issued Apr 19, 1979.

Which other Montclair businesses hold A General Engineering?

California general contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
  5. Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.

If the license is lapsed

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 30, 2026)
  2. Contractors State License Board (CSLB)