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Window / Door Replacement

New eSubmittal Permit for Window & Door Replacement Permit

This online application allows contractors and homeowners to obtain Window & Door replacement permit(s) in a single transaction using a credit card or e-check.

Requirements to use the eSubmittal Permit Application:

  • Residential Window & Door replacement applications only
  • Residential property in unincorporated Douglas County
  • Replacement work of windows and doors that does not involve the alteration of framing
  • For other types of Window & Door replacement permits please contact the Building Division at 303-660-7497.

Please note registration with Douglas County is required to use the online application. Registered users may login using existing credentials at

New users may create an account at


Permit Supplement

Complete questions 1-5 of the Permit Application Supplement and submit with your Building Permit Application.

Permitting Requirements

  1. Egress At least one window in each bedroom is required to meet egress requirements of 5.7 sq. ft. of operable area.  The window must meet a minimum net clear opening width of 20 inches, a minimum net clear opening height of 24 inches and shall have a sill height of not more than 44 inches measured from the finished floor to the bottom of the clear opening (Section R310, 2012IRC).
    Exception:  Windows located such that the sill height of the opening is not more than 44 inches above or below the finished ground level adjacent to the opening, shall be permitted to have a net clear opening of 5 square feet.
  2. Safety Glazing is required if replacing in hazardous locations as defined in section 308.4of the 2012 IRC.  Call the Building Division if uncertain at 303.660.7497. 
  3. Fall protection, where the opening of an operable window is located more than 72 inches above the finished grade or surface below, the lowest part of the clear opening of the window shall be a minimum of 24 inches above the finished floor of the room in which the window is located.  Glazing between the floor and 24 inches shall be fixed or have openings through which a 4-inch-diameter sphere cannot pass.


    • Windows whose openings will not allow a 4-inch-diameter sphere to pass through the opening when the opening is in its largest opened position.
    • Openings that are provided with window guards or a control device that complies with ASTM F 2090.
  4. U-factor is a measure of the energy performance of windows, doors and skylights.  A smaller U-factornumber is better – a window rated at .34 has better energy performance than a window rated at .35 (the minimum allowed by code).
  5. Carbon Monoxide detectors are required to be located within 15 ft. of all bedroom entrances and will be verified at final building inspection.


  • Rough Frame (Insp. #29) This inspection is required if the wall framing is altered during installation and must be performed before this alteration work is concealed.
  • Fenestration (Insp. #106) This inspection is for replacement glazing including windows, skylights, sliding doors etc. Factory labels must remain on the glazing that show fenestration, solar heat gain and air leakage as required in Section 402.3 and Section 402.4.2, 2009 IECC.  The Fenestration inspection may be performed prior to, or at the same time as the Final Building inspection.
  • Final Building (Insp. #108) Installers should complete all exterior work including siding, flashing and caulking prior to requesting this inspection.  Installation of carbon monoxide detectors will be verified.  The Fenestration inspection may be performed prior to, or at the same time as the Final Building inspection.

Inspections may be scheduled electronically or by calling 303 660-7497.  Have your permit number available.  Requests made before 3:30 p.m. will be scheduled the following business day.  A two hour estimated time window for the Building Inspector to arrive can be provided to you by calling our office the morning of the inspection after 8:30am.  The inspector will make every effort to arrive within the estimated time window provided.