Construction and rebuilds in Bonsall

What is different about Bonsall

• Bonsall is unincorporated, so building permits come from the County of San Diego.Source: County of San Diego Planning & Development Services (PDS)
• About 52% of the roughly 1,850 housing units in ZIP 92003 were built before 1990.Source: U.S. Census Bureau, ACS 2024 5-year, tables B25034 and B25003 (via Census Reporter)
• The December 2017 Lilac Fire burned structures in the Bonsall area.Source: CAL FIRE incident records

Bonsall is one of the smallest communities on this list, with just under 2,000 housing units in its ZIP, and many properties are larger rural parcels. That leaves room for guest houses, ADUs, workshops and larger additions. It also means private roads, wells, septic tanks and outbuildings can show up in the scope, and each has rules of its own.

A larger bedroom count on a septic parcel can require County environmental health review, and a new structure on a well property needs a check on water. The 2017 Lilac Fire left a number of owners rebuilding, so fire-hardened construction is a frequent question: ignition-resistant siding, ember-resistant vents and defensible space as the County requires. Access for fire trucks on long driveways can also require widening or a turnaround. We walk the lot first and list those items in writing.