Answer by condition
What the parcel's condition decides in San Dimas.
Two parcels in San Dimas can follow different paths because the mapped conditions differ. Below is each condition verified for this city, with the question, the answer, the verification step and the official source.
San Dimas sits about 25 miles east of Downtown Los Angeles, in the San Gabriel Valley cluster. The reviewing jurisdiction is the City of San Dimas.
Verified condition
Wildland-urban interface
In mapped fire-hazard areas, exterior materials, vents, eaves, glazing, defensible space and emergency access can all be regulated, and the fire authority becomes a reviewer alongside planning and building.
What does a fire-hazard designation change?
It can govern exterior materials, vents, eaves, glazing, defensible space and access width, and it adds a fire authority review to planning and building. Start by confirming the parcel's mapped hazard severity zone and the access requirements for its street and driveway.
How to verify it
Check the parcel's fire hazard severity zone designation, the applicable building-code chapter for wildfire exposure and access-width requirements for the street and driveway.
Verified condition
Historic resources and districts
A designated resource or a contributing property in a district changes what can be demolished, how additions read from the street, which materials are acceptable and what documentation the file needs.
What changes if the property is historic?
Demolition, street-facing additions, window and material choices and the documentation in the file. Confirm designation or contributor status and the applicable review before committing to an exterior design.
How to verify it
Check whether the property is designated or a district contributor, which review applies to exterior change and demolition, and what documentation is expected.
Baseline framework
What applies to every parcel, condition or not.
- StateState accessory dwelling unit lawCal. Gov. Code § 66310 et seq.
- StateLocal ADU ordinance standardsCal. Gov. Code § 66314
- StateJunior accessory dwelling unitsCal. Gov. Code § 66333
- StateTwo-unit residential development (SB 9)Cal. Gov. Code § 65852.21
- StateUrban lot splitCal. Gov. Code § 66411.7
- StateHCD accessory dwelling unit guidanceCalifornia HCD
- StateCalifornia Building Standards CodeCalifornia Code of Regulations, Title 24
- StateCALGreen building standardsTitle 24, Part 11 (CALGreen)
- StateBuilding energy efficiency standardsTitle 24, Part 6 (Energy Code)
- StateContractor licence verificationCal. Bus. & Prof. Code, CSLB
- CountyCounty parcel and assessment recordsLos Angeles County Assessor