In Santa Monica the first question is the slope. A pitched roof and a flat roof are treated differently by the state rule here.
Which roofs the rule reaches
Santa Monica is in climate zone 6. The state's steep-slope values cover only zone 4 and zones 8 to 15, which leaves a pitched roof here outside them. A low-slope reroof of more than half the roof is covered: at least 0.63 reflectance after aging and 0.75 emittance, with SRI 75 as the other route. Where a house has a flat section over an addition, check that part against the low-slope values.
Materials for the coast
Composition shingle, concrete or clay tile and coated metal are all options when the details are right. The assessment counts the layers before a covering is chosen.
Fire class and permits
Use the official CAL FIRE map viewer, then put the question to the city's fire or building office. Permits come from the city's own plan-check staff.
Santa Monica replacement questions
Is a Class A roof required for a reroof in Santa Monica?
That depends on whether the address is in a mapped fire zone. Check the official CAL FIRE viewer, then put the question to the city's fire or building office.
Which office issues reroof permits in Santa Monica?
The city's own building and plan-check staff.
Which roof materials suit houses in Santa Monica?
Composition shingle, tile and coated metal can all suit the coast. Choose corrosion-resistant fasteners and flashing, and check the cool roof values for any low-slope section.