A permit is not required if you are doing non-structural work such as: painting, flooring, direct replacement of windows / doors, gutters, and siding. Landscape work does not require a permit; however, installation of an irrigation system or a retaining wall with a height of 4 feet or more does require a permit. (This list may not be all-inclusive, if you have questions, please contact the permit office.) Please refer to Building Permits & Inspections Frequently Asked Questions for additional information.