An SB9 lot split can allow you to split one qualifying R1 (single-family) lot into two legal parcels and potentially build up to two homes per parcel (up to four homes total) if the site and local objective standards support it.
In this blog, Eric Escobar bought a fixer for $585,000, put about $60,000 into the front house, then built three ~800 sq ft homes to end with two APNs and two homes per APN, with a combined value near $2.5M (case-specific) and rents around $3,000/month per unit (market-dependent).
The biggest drivers: lot size/access, conservative build costs, and managing city timelines.
In Southern California, a builder-investor named Eric Escobar is using an SB9 lot split in Los Angeles County to turn a single-family purchase into a small housing “package” with strong equity and rents.
The concept is simple: buy a fixer on a larger R1 lot, improve the front house, split the lot into two legal parcels, then build small new homes behind it.
This isn’t a quick flip. It’s a patient, rules-based development play. But when the lot is right and the plan is clean, the upside can be massive.
This blog comes from an episode of the DealMachine REI Podcast featuring Los Angeles builder-investor Eric Escobar and his SB9 lot split strategy. Want the full details in his own words? Watch the full episode below:
An SB9 lot split (urban lot split) can allow eligible owners to split one single-family lot into two legal parcels. In many cases, SB9 can also allow up to two homes per parcel, which can create up to four homes total, depending on site constraints and local objective standards.
SB9 matters because it changes what “single-family zoning” can do. Instead of one home on one lot forever, qualifying owners can add gentle density, small, detached homes that fit neighborhoods and rent well in high-demand markets like Los Angeles County.
The SB9 strategy is: buy a single-family home with a large lot, rehab the front house, apply for the SB9 urban lot split, then build small homes so each parcel ends up with two homes.
Eric’s approach is consistent:
In Eric’s example, a $585,000 purchase plus improvements and new small homes resulted in two parcels that appraised around $1.25M each, for a combined value near $2.5M (case-specific).
Here’s the breakdown he described:
He split the original ~11,000 sq ft lot into two parcels:
Eric said each two-home parcel was valued like a “duplex-style” asset, landing around $1.25M per parcel, or about $2.5M combined (case-specific).
When a parcel has two separate homes producing income, appraisers often treat the parcel like a small multi-unit asset because it functions like one: two dwellings, two rent streams, one parcel value.
This is a major reason the SB9 model can create strong equity. It’s not only adding square footage, it’s adding rentable dwellings, which can change how the asset is valued.
A flag lot is a rear parcel that gets street access through a narrow strip (the “pole”), which often becomes the driveway to the back homes. It matters because rear homes still need legal access, addressing, and workable circulation.
In Eric’s deal, the property had a setup that made this easier: it allowed access to the rear parcel via a driveway. If a lot can’t solve access cleanly, the SB9 plan can get complicated fast.
The best SB9 candidates are lots with enough depth, shape, and access to support a clean split and safe entry to rear homes, often larger lots around 8,000–11,000 sq ft or more in tight urban areas.
Eric’s point is practical: you’re not forcing four homes onto any random lot.
Look for:
Eric specifically called out smaller lots (for example, around 4,000 sq ft) as too tight for this strategy in many cases. Even if something seems possible on paper, site constraints can make it “not worth the squeeze.”
SB9 can be limited by location-based constraints like high fire risk areas or flood zones, plus practical site issues like access, setbacks, and utilities.
Eric emphasized that SB9 can apply broadly to R1 zoning, but it isn’t unlimited. Cities may restrict eligibility or feasibility in hazard areas, and site standards still matter.
SB9 can push a faster response timeline than traditional entitlements, but real-world projects can still take around a year to get plans approved, then additional time to build, especially in high-regulation markets.
Eric’s warning is clear: this is not a 2–3 month flip.
The SB9 advantage often goes to the person who knows the law and can calmly push for correct interpretation, especially when staff default to “no.”
Eric’s approach: read the bills yourself, know the timelines, and don’t rely on front-counter opinions. He believes some city staff don’t deeply know the bill language, so investors need to show up prepared.
He shared an example where a planner interpreted “at least 66%” in a way that reduced allowed units. His mindset: when the stakes can be six figures per unit, it’s worth escalating to a manager review (and beyond if needed) to get a correct reading.
Costs depend on whether you’re an owner-builder and how complex the site is. Eric estimated his own 800 sq ft units at about $200K–$220K per unit, but said most owners hiring a contractor should underwrite around $300 per sq ft or more, depending on conditions.
Eric’s cost advantage comes from:
If you’re not a builder, the safer move is to budget at market rates and add a contingency. This keeps the deal from falling apart when bids come back higher than expected.
He finds deals by being on-site in the neighborhoods where he already works, spotting overlooked properties, and doing direct outreach instead of chasing crowded lists.
His method is simple:
One of his best deals came from a house that looked fine from the street but had been vacant for years. The backyard told the real story, something many people would miss without local eyes on the ground.
The biggest SB9 mistakes usually come from forcing the strategy onto the wrong lot, underestimating timelines, and underwriting costs too optimistically.
Common mistakes to avoid:
Treat SB9 like a small development project: pick the right lot, underwrite conservatively, design small and repeatable homes, and plan for time.