SB9 Lot Splits

Turn one lot into two — and up to four units.

California’s SB9 law can unlock duplexes and lot splits on single-family properties. We help homeowners figure out what’s possible, design around the rules, and build it.

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Why homeowners choose this

SB9 Lot Splits done right.

Maximize your lot

SB9 can allow up to four units or a lot split on a qualifying single-family property — a path to rental income or a family compound.

Investment potential

Adding units often adds more value than a single remodel, and rental income can help cover the mortgage.

Flexible strategies

We help you compare an SB9 lot split, a duplex, or an ADU-plus-primary layout — whichever fits your property and goals.

Navigate the rules

Owner-occupancy, unit caps, and local design guidelines vary by city. We confirm what your specific address allows.

FutureLot

See what your lot allows.

Enter your address for a quick read on setbacks, allowed units, and what this project type looks like on your specific property.

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Get instant answers about your lot

Enter your details and we'll unlock the lot lookup tool. We'll also save your info so we can follow up if you have questions.

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Recent projects

Real work, nearby.

Photos are being added — captions show the project type and city in the meantime.

Duplex conversion — Long Beach
Lot split + two units — Los Angeles
Four-unit SB9 layout — Whittier
Rental-focused duplex — Lakewood
Owner-occ + rental unit — Port Hueneme
How it works

Three easy steps. No pressure.

1. Send us your address

We check your zoning, lot size, and local SB9 rules to see how many units or splits your property can support.

2. Feasibility + design

We map out a layout that satisfies owner-occupancy, parking, setback, and unit-cap rules while matching your budget.

3. Permits to build

We handle plans, city coordination, and construction so your units are permitted and ready to rent or occupy.

Frequently asked
questions

The things homeowners ask us most before moving forward.

Ready to talk through your project?

Book a free consultation. We’ll walk your property with you and lay out your options — no pressure.

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