Eave Construction Guidance

This page provides AutoCAD detail drawings for various types of eaves that comply with the County of San Diego Ignition Resistant Eave Construction Guidance Documents.


While these standards will provide a high level of protection to structures built in the wildland/urban interface area; there is no guarantee or assurance that compliance with these standards will prevent damage or destruction of structures by fire in all cases.  For more information on eave construction or other fire code requirements, please refer to the County's Wildland-Urban Interface - 2008 Code Changes summary document (PDS #664) or contact the County's Building Department, Fire Services Division at (858) 565-5920.


To determine which detail will be allowed on your structure, you must first determine whether you are able to maintain 100 feet of defensible space completely around the structure in accordance with the Fuel Modification requirements of section 4707.2 of the County Fire Code.  The fuel modification zone shall be located entirely on the subject property.

  • When 100 foot of defensible space will be provided any of the details listed in the following Ignition Resistant Eave Construction chart may be used.
  • When 100 foot of defensible space is not provided.  While it is always desirable to have at least 100 feet of defensible space around all structures in the Wildland-Urban Interface Fire Area, there are situations where the required fuel modification cannot be achieved on the parcel, or where steep terrain, high fuel loads, or other special circumstances create additional hazard.  In these cases only the most ignition resistive of the details may be used as shown in the right hand column of the Ignition Resistant Eave Construction chart.

Once you have determined the amount of defensible space that can be created on your property, consult the following table to download the appropriate detail.


1 Fascia Protected Detail_01.dwg
2 Foam Trim Detail_02.dwg
3 Modified Heavy Timber Detail_03.dwg
4 Exposed Fascia Detail_04.dwg
5 Exposed Fire Retardant-Treated Wood Fascia Detail_05.dwg
Font 1.SHX
Plot Style Table County FR Eave Details.ctb