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John Mc Donagh Builders And Energy Systems

Castro Valley, CA 94546(707) 567-5246
RoofingPaintingFlooringMasonry and concreteDrywall and plasterCarpentryHVACWater heaters and boilersElectricalLightingLow voltage and security systemsSolarLandscapingTree servicePlumbingRefrigerationLicensed since 1982
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On the public register

One record filed with the issuing authority

  • California Contractors State License Board

    active

    Kind
    license
    Classifications
    B General Building, C-4 Boiler, Hot Water Heating and Steam Fitting, C-10 Electrical, C-27 Landscaping, C-33 Painting and Decorating, C-36 Plumbing, C-38 Refrigeration, C-43 Sheet Metal, A General Engineering
    Reference
    422946
    Issued
    May 18, 1982, licensed since 1982
    Expires
    May 31, 2028

Classifications held

9 classifications on the register

  • B General Building
  • C-4 Boiler, Hot Water Heating and Steam Fitting
  • C-10 Electrical
  • C-27 Landscaping
  • C-33 Painting and Decorating
  • C-36 Plumbing
  • C-38 Refrigeration
  • C-43 Sheet Metal
  • A General Engineering

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 16 trades

Roofing

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

Painting

Interior and exterior coatings, line striping and surface prep.

Flooring

Tile, vinyl, sealed concrete and slip-resistant kitchen floors.

Masonry and concrete

Slabs, curbs, walkways, footings and block work.

Drywall and plaster

Board, tape, texture and fire-rated assemblies.

Carpentry

Framing, millwork, counters, shelving and door hanging.

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.

Landscaping

Planting, irrigation, mowing and grounds maintenance.

Tree service

Pruning, removal, storm damage and stump grinding.

Plumbing

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

Refrigeration

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

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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