Commercial New Additions

What is it?

You need a Commercial New or Additions Permit to build a new building or add on to an existing building, whether it is a commercial or industrial building. New structures that are accessory to a commercial building are considered commercial accessory such as mail boxes, carports and or gazebos. An addition involves changes to the building square footages, such as adding floor area. Enlarging an existing mezzanine can also be an addition to the building square footage.
Examples of common change of use projects are; adding a second floor, creating an entry vestibule or enlarging an existing mezzanine and/or building a new structure.

How Much Does it Cost?

Fees are based on the value of your project. You pay a plan review fee when you submit your plans and the rest when you pick up your permit. Use our fee estimator to estimate how much your permit will cost; there maybe Capital Facility Charges, Impact Fees and Bonds to be posted on these permit types. See the Fee Schedule (A-Z) page to download the Commercial Fee Schedule for fee related information.

How Long Does It Take?

We try to finish our initial review of new and additions permit in 70 calendar days from submittal. How long it takes to get the final permit depends on how complex your project is and how many corrections, if any, you need to make.

Steps to Get Your Permit

1. Research
Get your property information. Find property information to help you plan your project. Property Viewer Interactive Map
Determine restrictions to your project. Research our codes to determine what occupancies are allowed in the building and what land uses are allowed in that zoning area. Redmond Zoning Code
Find incentives for your project. Research the City’s different incentives that might apply to your project. Green Building
Determine if you need a land use permit. If your project requires land use approval please contact the Planner On Call at 425-556-2494 or via email at for more information.
Request a Pre-Application Meeting (optional). We recommend pre-application meeting for very complex projects, including buildings with unusual structural systems, substantial alterations, or work in environmentally critical areas or shorelines. Pre-applications meetings are scheduled on Thursday's. For more information, see Pre-Application Conference Tip Sheet.
2. Start Permit Application
Obtain a permit number by contacting the Plans Examiner of the Day ( and providing them your Building Permit Application Form.
Apply for exemptions. You may need an exemption if your project is located in an environmentally critical area or near the shoreline.
Prepare your plans. Plans should be electronic and should be to scale and easy to read.
Fill out forms:
Commercial Building Permit Packet 

Coordinate with other agencies. You may need permits or approvals from other agencies. These are the most common agencies you may need to work with for your permit type:
  • King County Public Health – Food Handling
  • King County DSC – Medical Facility
3. Submit Plans
Schedule an intake appointment. Call 425-556-2493 to speak with your assigned Plans Examiner who can assist you in scheduling an intake appointment and the remote uploading of your plans.

Tips for a Successful Intake Appointment 
Pay Fees
Plan Review fees are due at permit application. The fees are calculated based on your project value.

Plan Review
Make corrections and resubmit your plans. Your project review will send you a correction letter if changes are needed and instructions on how to upload new plans through the E-Track Portal.
4. Get Permit
You will be contacted when your plans are approved. Once permit issuance fees are paid, you can pick up your permit and approved plans at the Development Service Center with a blank USB drive or log into the E-Track Portal, you can print your permit and approved plans.
Get related permits. You may need to get additional permits or approvals from other departments.

5. Schedule Inspection
Request an inspection.  See the E-Track Portal page to schedule an inspection online or call 425-556-2435 and the use the pin number on the permit to request an inspection. A Final inspection needs to be requested and approved to complete the inspection process.
6. Complete Project
Receive your Certificate of Occupancy.  You will need a Certificate of Occupancy if you have changed the use, construction type, or occupancy an existing space and/or building.
Your permit information will be archived in our electronic document management system.