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Ernest Ongaro & Sons INC Dba Ongaro & Sons

Petaluma, CA 94954(707) 579-3511
HVACWater heaters and boilersElectricalLightingLow voltage and security systemsSolarFire protectionRefrigerationPlumbingRoofingLicensed since 1963
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On the public register

One record filed with the issuing authority

  • California Contractors State License Board

    active

    Kind
    license
    Classifications
    C-4 Boiler, Hot Water Heating and Steam Fitting, C-10 Electrical, C-16 Fire Protection, C-20 Warm-Air Heating, Ventilating and Air-Conditioning, C-34 Pipeline, C-36 Plumbing, C-39 Roofing, C-42 Sanitation System, C-43 Sheet Metal, C-60 Welding, D-21 Machinery and Pumps
    Reference
    215233
    Issued
    Feb 13, 1963, licensed since 1963
    Expires
    Jan 31, 2028

Classifications held

11 classifications on the register

  • C-4 Boiler, Hot Water Heating and Steam Fitting
  • C-10 Electrical
  • C-16 Fire Protection
  • C-20 Warm-Air Heating, Ventilating and Air-Conditioning
  • C-34 Pipeline
  • C-36 Plumbing
  • C-39 Roofing
  • C-42 Sanitation System
  • C-43 Sheet Metal
  • C-60 Welding
  • D-21 Machinery and Pumps

A classification is what the state authorized this business to do. It is not a statement that they do all of it, or that they are taking work today.

Trades

Licensed for 10 trades

Water heaters and boilers

Commercial tanks, tankless units, boilers and hot water recirculation.

Electrical

Panels, circuits, motor loads, standby generators and service upgrades.

Lighting

Interior fittings, exterior wall packs, lot poles and LED retrofits.

Low voltage and security systems

Cameras, recorders, alarms, access control and structured cabling.

Solar

Photovoltaic arrays, inverters, storage and roof penetrations.

Fire protection

Sprinklers, kitchen suppression, standpipes and annual certification.

Refrigeration

Walk-ins, reach-ins, freezers, display cases and the sealed systems behind them.

Plumbing

Supply, waste, drains, fixtures, grease interception and backflow.

Roofing

Flat and pitched roofs, membranes, flashing and leak tracing.

Trades are mapped from the license classification on the register, not from anything the business has told us. The work listed under each one is what that classification covers, not a list of jobs they have done.

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