Know what you own.
Whittier homeowners can benefit from understanding their parcel, local planning rules and the history of their property before making major decisions.
Start with the parcel.
Confirm lot dimensions, zoning, permitted structures and relevant records with the appropriate public agencies. Assessor data and marketing descriptions are not substitutes for permits or a survey.
02 · PreservationHistoric homes need a different checklist.
Whittier has locally designated historic resources and preservation requirements. Before altering the exterior of a property in a designated district, verify what review or approval may apply.
03 · ImprovementsConsidering an ADU?
California's ADU laws provide important opportunities, but lot conditions, access, setbacks, utilities, fire safety, historic restrictions and current local rules still matter. Whittier offers information about preapproved ADU plans; a preapproved design does not guarantee approval for every parcel.
Useful first checks
Review zoning and historic status, existing permits, utility constraints and site dimensions before paying for plans or obtaining contractor estimates.
City of Whittier official resources ↗What might your home sell for?
Automated estimates can be a starting point, but comparisons should account for property condition, improvements, lot characteristics, local sales and the date of the analysis. A comparative market analysis is not a certified appraisal.