Side and Rear Yard: Fences may be up to six feet (6') tall and may be extended up to eight feet (8') with see- through fencing material, except in visibility zones. In visibility zones, no fence may exceed three feet (3') in height.
Not exceeding 120 square feet, fences not over 7 ft. high, retaining walls not over 4 ft. in height (measured from the bottom of the footing to the top of the wall), etc. For complete list of work exempt from permit see California Residential Code Section R105 and California Building Code Section 105.
A building permit is required for all new, replacement and or repaired retaining walls as defined by the California Building Code CBC 105.2 building 4 and the California Residential Code R105. 2 Building:3. If the wall is supporting a surcharge no matter the height, it will require a building permit.
Retaining walls that are not part of a building shall have a maximum height of 6 feet. Retaining walls with a height greater than 4 feet shall not have a horizontal measurement of greater than 20 feet per retaining wall, and 40 cumulative feet for all such walls.
1 Indian standard code used for designing retaining wall – IS 400 for concrete design. 2 IS 1893 Part-III used for design of bridges and retaining wall.
The MIP established a plan to provide long-range protection for Alameda Point from rising sea levels. The plan included flood protection strategies and requirements for raising elevations within.