• Electrical, Mechanical and Plumbing Permits

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    Electrical, Mechanical and Plumbing permits are issued for stand-alone work or as part of a construction project. The following information will help you determine what kind of permit you need and whether your project requires plan review.

    Submit permit applications and plans online at MyBuildingPermit.com

    Examples of when you need an electrical permit:

    Examples of when you don't need an electrical permit:

    • Adding fewer than 10 telecommunication outlets
    • Replacing individual broken switches, outlets or circuit breakers
    • Installing speaker systems in a single-family residence

    Your project may require plan review (BG permits). Examples of projects that require you to submit electrical plans with your application include: 

    • New non-residential building
    • New multifamily residential projects (three or more dwelling units per building)
    • Installations or alterations over 2,500 square feet
    • Any installation or alteration in a space with health or personal care, educational and institutional occupancy categories
    • Photovoltaic Systems and Wind Driven Generator Systems on non-residential, multifamily residential and single family residential properties
    • Fifty percent or more of the lighting luminaries are new

    Submittal Documents and Forms

    Electrical permits that do not require plan review (BF permits) can be issued the same day. These permits will still require inspections. 

    Residential Solar Panels

    All solar photovoltaic systems require an electrical permit and, in some cases, a building permit. Learn more about solar panel permitting.

    Examples of when you need a mechanical permit:

    • Replacing “like-for-like” HVAC equipment. All new equipment must meet current codes.
    • Installing piping and appliances that use natural and other fossil fuels
    • Installing a generator (fuel appliance).
    • Condensate – usually designed by a plumber, this requires a mechanical permit

    Examples of when you don't need a mechanical permit:

    • Self-contained refrigeration equipment with less than 10 pounds of refrigerant and/or less than 1 HP (and no refrigerant line welding) is exempt.
    • Auto shops that install air and fluids for serving vehicles do not fall under the building codes.

    Your project may require plan review (BL permits). Examples of projects that require you to submit mechanical plans with your application include:

    • New, additions, alterations and replacement to non-residential building and multifamily residential (three or more dwelling units per building) projects
    • Townhomes over three stories
    • Relocation or addition of 15 or more diffusers or grilles
    • Relocation or addition of five or more VAV boxes
    • Penetration of fire-rated construction
    • Cooking equipment, commercial kitchen hoods (Type I and II)
    • Refrigeration
    • HVAC equipment
    • Fuel gas distribution piping and equipment, fuel gas-fired appliances, fuel gas-fired appliance venting and fuel tanks
    • Boiler venting and combustion air (Boilers are permitted thru L&I; a boiler is any water heater over 199 MBH)
    • Exterior work in a Design District
    • Rooftop installations: screening required
    • Generators

    Submittal Documents and Forms

    Things you should know:

    • Town homes designed under the IRC do not require a plan review.
    • Walk-in coolers require a building permit.
    • Self-contained refrigeration (evaporator & condensing unit) might require a mechanical permit.
    • Site plans are required to verify intake and exhaust distances from property lines, roads, parking lots and other buildings. They are not needed if all work is inside the building.

    NOTE: Many buildings in Bellevue have smoke control systems. Any mechanical work in one of these buildings will require the applicant to verify the affects to the smoke control system.

    Mechanical permits that do not require plan review (BK permits) can be issued the same day. These permits will still require inspections.

    Examples of when you need a plumbing permit:

    • Replacing an electric water heater
    • Installing water service from meter to house, including irrigation backflow preventer
    • Altering piping inside a wall, ceiling or beneath a floor (including removing and replacing a shower or bath tub)
    • Installing new plumbing where it did not exist previously
    • Installing or replace any fixture or valve in a commercial kitchen

    Examples of when you don't need a plumbing permit:

    • Repairing or replacing sinks, toilets or faucets not concealed in a wall in a code-compliant manner
    • Repairing or replacing countertops, shower heads, rain gutters or downspouts
    • Installing a water feature or exterior hot tub that is filled by a hose

    Your project may require plan review (BO permits). Examples of projects that require you to submit plumbing plans with your application include: 

    • New non-residential building
    • New multifamily residential projects (three or more dwelling units per building)
    • Roof drains and overflow systems
    • Any work involving:
      • Medical gas piping
      • Commercial kitchens, food preparation, food service 
      • Hazardous waste
      • Laboratory
      • Oil or sand interceptor, waste interceptor, grease interceptor or grease trap installation
      • Sumps (residential sump pumps need prior approval, but not plan review)
      • Underslab or footing drains within the building

    Plumbing permits that do not require plan review (BN permits) can be issued the same day. These permits will still require inspections.