SB9 Multi-Unit Residential Splits
Maximize your property's yield under California SB9 legislation. We guide you through urban lot splits, dual-primary residences, and structural engineering to unlock maximum residential density.
Understanding SB9 Multi-Unit Residential Splits
California Senate Bill 9 (SB9) allows owners of single-family residential lots to subdivide the lot into two parcels and/or build up to two primary dwelling units per parcel — effectively converting one lot into a duplex or two separate properties you can sell independently.
An SB9 urban lot split creates two legal parcels from one, each eligible for its own primary residence. This unlocks the ability to sell half your lot, build two homes for rental income, or house multiple generations while preserving title independence.
RGV Development Inc. navigates the entitlement process end-to-end: zoning verification, lot-split parcel maps, utility easement mapping, structural and civil engineering, and dual-residence construction that meets SB9 setback and density rules.
Is This Right For Your Property?
Lot Value Doubling
Split a single lot into two sellable parcels, each with its own primary residence and independent value.
Maximized Rental Yield
Build two units on land that previously held one, doubling monthly rental income from the same footprint.
Family Estate Planning
Create separate titles for heirs while keeping family on one cohesive property.
Developer-Grade Density
Achieve duplex-level density on single-family-zoned lots without rezoning hearings.
Our End-to-End Process
SB9 Eligibility Check
Verify your lot qualifies: single-family zoning, not in historic district, no prior lot split, lot size and width minimums.
Parcel Map & Engineering
Tentative and final parcel maps, civil grading, utility easements, and structural engineering for dual units.
City Entitlements
We file the SB9 lot-split application, manage agency reviews, and secure the two-lot subdivision record.
Dual-Residence Build
Construct two primary residences — each Title 24 compliant, independently metered, and ready to occupy or sell.