Maximize Your Property with SB-9
Learn how California’s SB-9 law can work for your property, or schedule a free consultation to explore your options.
Your consultation form will appear here shortly. If it doesn’t, please refresh the page or call us at
What Are SB-9 Projects?
In 2021, California passed Senate Bill 9 (SB-9) to help ease the state’s housing shortage. This law makes it easier for homeowners to create more housing units on their property by allowing:
Lot Splits
SB-9 lets you legally split a single-family residential lot into two separate parcels. Each new parcel can then be sold or developed independently.
Duplex Conversions
On top of lot splits, SB-9 also allows homeowners to convert an existing single-family home into a duplex (two separate units) or build new duplexes from the ground up.
Up to Four Units on One Lot
Here’s where it gets exciting: because SB-9 allows two homes per lot, a single lot split could hold up to four homes total—doubling the housing potential and property value.
Benefits of SB-9
Create a New Income Stream
The most common reason homeowners pursue SB-9 is to generate rental income. By splitting your lot or adding a duplex, you can create one—or even multiple—new units that bring in steady monthly rent, helping cover mortgage payments or build long-term passive income.
Maximize Property Value
Adding additional units to your property can significantly increase its appraised value. With SB-9, a single-family lot can potentially hold up to four homes (two on each split parcel), multiplying the equity in your property and boosting future resale value.
Build Wealth Without Buying More Land
Land in California is expensive. SB-9 allows you to unlock hidden value in the property you already own, creating more housing without having to purchase a new lot. This is one of the most cost-effective ways to grow wealth in real estate.
Flexibility for the Future
Rent out the new units now, use them for family later, or sell one of the parcels for cash. SB-9 gives you options and financial flexibility that single-family zoning never allowed.
Our SB-9 Services
Feasibility & City Compliance
Every property is different. We begin with a detailed feasibility study to confirm what SB-9 allows on your lot, navigating city rules, zoning, and permits so you know exactly what’s possible before investing.
Lot Splits & Mapping
Legally split one parcel into two and unlock hidden value. We handle surveying, mapping, and approvals, making the process simple and stress-free.
Duplex Conversions
Convert a single-family home into a duplex with two rentable units. From design to permits and construction, we deliver a smooth path to new income or flexible family living.
Ground-Up Duplex Builds
Build brand-new duplexes on an existing or newly split lot. Whether for rental income, resale value, or multi-generational housing, we manage the full build.
Integration with ADUs
Combine SB-9 with ADU regulations to maximize your property’s potential. With the right plan, one property can support up to four homes, boosting both income and equity.
Our Process (Simple + Predictable)
Feasibility & Eligibility
We confirm what SB-9 allows on your lot—zoning, setbacks, access, utilities, objective standards—and give you a clear go/no-go and budget window.
Mapping & Path Selection
If pursuing a lot split, we coordinate survey and a tentative parcel map; if duplex-only, we draft a site plan. You get side-by-side options: split, duplex, or both.
Design
Architectural and civil plans that meet SB-9 requirements and your goals—layouts, elevations, and selections aligned to scope and budget.
Approvals & Permits (Ministerial)
We submit the SB-9 lot split and/or duplex package, manage comments, record the parcel map (when splitting), and pull building permits.
Build & Handover
Fixed-scope construction with milestone quality checks, utility tie-ins, final inspections, and certificate(s) of occupancy—wrapped with warranty details.
SB-9 FAQs
What is SB-9?
SB-9 is a California law that lets homeowners split their single-family lot into two parcels and/or build up to two homes on a lot, making it possible to create up to four homes on a single property.
Can every property qualify for SB-9?
No. Properties must meet certain requirements—like being in a residential zone, not in historic districts, and having proper access. We confirm eligibility with a detailed feasibility study.
How long does the SB-9 process take?
Most SB-9 projects take 6–12 months, depending on whether you’re splitting a lot, building new units, or both. City review timelines can vary, but our team manages the process to keep things moving.
Is an SB-9 project the same as adding an ADU?
Not exactly. ADUs are accessory units, while SB-9 allows for lot splits and duplexes. The two can be combined—meaning one property could support up to four homes.
What’s the cost of an SB-9 project?
Costs vary widely depending on design, lot conditions, and construction scope. We provide a budget range after the feasibility study so you know what to expect before committing.
Do I need to live on the property?
Yes—SB-9 requires owner occupancy on at least one of the parcels for a minimum of three years if a lot split is performed.
Does an SB-9 project increase property value?
Yes. By creating additional units or splitting a lot, you’re often adding significant equity and long-term rental potential.