Re‐roofing in Newbury Park requires a permit from Thousand Oaks Building and Safety and involves two
inspections. The first is a roof nailing inspection, where an inspector will inspect the nailing pattern of
the roof deck and a final inspection, to ensure the job was completed. There are areas of Newbury Park
that are part of Ventura County and permits would be handled out of the East County Office. Please
view the Ventura County section for specific requirements. The City does have minimum requirements
on the type of product to be installed and follows California’s 2007 Uniform Building Code. For
additional information you may contact Building & Safety at 805‐517‐6270 or online at
Listed below is a breakdown of the minimum roofing requirements based upon the most common existing roof coverings.
They include Wood Shake, Composition or Asphalt Single, Concrete Tile, and low slow of flat roofing.
| Categories |
Wood Shake |
Asphalt Single |
Tile |
Low slope |
| No. of layers |
Max is 1. No addl. layers allowed |
Max layers is 3 |
Max is 1. No addl. layers allowed |
Added layers may require Eng. Report |
| Plywood |
15/32" OSB or CDX Plywood |
Usually not needed. |
Usually not needed. |
Usually not needed. |
| Minimum Felt Underlayment* |
15# ASTM. 30#(+) is recommended. |
15# ASTM. 30#(+) is recommended. |
2 layers of 40#(+) is recommended. |
Not applicable |
| Minimum Fire Rating |
40 yr. minimum. Class A minimum |
40 yr. minimum. Class A minimum |
No minimum. Class A minimum |
No minimum. Class A minimum |
| Color Restrictions |
White, Green, & Black are not allowed (Earth Tones only) There are exceptions with Tile. HOA approval may be required. |
| Maximum Weight |
** 6 lbs per square foot. Over 6 bls requires Engineers Report ** |
| * Roofs with a slope of less than 4:12 require a minimum of 2 layers of a 15 lb. ASTM felt underlayment. |