- Show all recorded easements located on the parcel. Show distances from the proposed structure(s) to all property lines (or nearest edge of road easements). Show, to scale, all existing or proposed structures on the property (such as a garage, well, shed, swimming pool, or HVAC equipment). Also show the septic system location.
- Show existing site topography (prior to grading) using contour lines at 1 or 2 inch vertical increments. The contour lines must extend a minimum of 20 feet beyond the building site, driveway, or other disturbed area.
- Show the proposed grading. This is generally done by using one of two methods: darker, thicker contour lines that overlay the (lighter) existing contour lines; or darker, thicker lines that show cut and fill slopes to scale (the slopes are plotted using a scale). Due to the technical nature of this aspect of the building plans, it is recommended that you have a professional (i.e. civil engineer, architect, or landscape architect) assist with this portion of your plan preparation.
- Show how storm run-off will be controlled around the proposed structure. If the building site is relatively level, provide control elevations along drainage swales, showing that a minimum 1% slope will exist. Note that drainage swales should be located a minimum of five feet from the foundation where practicable, and be rock-lined where the slope exceeds a 1:10 slope (10%).
- Provide a fully-dimensioned driveway profile that includes the following: elevations at road edge or top of curb, garage floor, and at each grade break; percentage of slope between grade breaks; and distance between grade breaks.
- Show how the California Fire Safe Regulations will be met. Basically, these rules require that driveways be a minimum of ten feet wide, paved where the slope exceeds 16%, have turnouts and turnarounds at certain locations for fire trucks and other vehicles in the event of a fire.