Martinez, CA Building Setbacks & Zoning: Setback Rules (2026)

Front setback requirements in Martinez are established by Martinez Municipal Code Title 17 (Zoning Ordinance) and vary by zoning district. Standard single-family zones (R-1) typically require a 20-foot front yard setback measured from the front property line to the nearest point of the main dwelling; denser zones (R-2, R-3) may have smaller setbacks (commonly 15 feet), while larger-lot zones or hillside overlays may require deeper setbacks. The front yard is the open space between the front property line and the front building line, and must remain unoccupied by structures except for specified encroachments. Permitted encroachments typically include: eaves and cornices up to 2-3 feet, unenclosed porches up to 6 feet (with limits on depth and width), bay windows not extending to the ground up to 2 feet, chimneys up to 2 feet, and steps/walkways. Fences in front setbacks are limited to 3.5-4 feet in height to preserve visibility. On corner lots, both street frontages are subject to front setback requirements, although the secondary street frontage may have a reduced 'street side' setback. Averaging provisions may apply where existing homes on the block have established a different front setback pattern. Accessory Dwelling Units (ADUs) have state-mandated setback reductions under Government Code 65852.2: 4 feet rear/side, and a new ADU generally cannot be placed in the front yard of the primary dwelling unless no other feasible location exists. Reduced setbacks may be approved through variance proceedings where strict application would cause a hardship.