Skip to content
(760) 803-9747Book a call
BHI Builders
Book a call
ADUs
Projects
Services
Process
Resources
About
(760) 803-9747

Resources

Plan your project

Free tools and plain guides for building in San Diego County. Each calculator gives you a range, never a quote, and every guide names the rule and where it comes from.

Good places to start

A cleared hillside building lot with a graded pad, survey stakes and a gravel drive among golden grass and oak trees

Plan

Start with a planning range for your ADU, then check what your lot allows.

A remodeled kitchen with cream cabinetry, a marble island with three linen stools, a plaster range hood, wood ceiling beams and wide oak floors in warm afternoon light

Learn

Guides to the San Diego rules homeowners ask about most, each one with its sources.

Concrete patio wrapped by an L-shaped ADU with solar panels and a block retaining wall with new planting in Hidden Meadows, built by BHI Builders

Finance

See what an ADU could rent for, and compare the ways to pay for one.

Downtown San Diego's skyline rises across the blue water of San Diego Bay, seen from the rocky Coronado shore on a clear day

Local

San Diego County has 19 permit authorities. Find out which one reviews your property and what it asks for.