What is a “Two-unit Development” versus an “Urban Lot Split”?

SB 9 FAQ 2

TWO-UNIT DEVELOPMENTS

The diagram on the left depicts a traditional rectangular shaped single-family parcel with what is known under SB 9 as a “Two-unit Development”.   In this scenario, a property owner with a single-family home may construct a second home on the property and may also build an Accessory Dwelling Unit and Junior Accessory dwelling unit resulting in the development of a total of four dwelling units on a single-family parcel.

URBAN LOT SPLITS

The two diagrams on right depict scenarios that are under the “Urban Lot Split” category.  In these two Urban Lot Split Scenarios, the property owner may subdivide a single-family parcel into two lots and in these scenarios ADUS or JADUS are not allowed in conjunction with Urban Lot Splits.

The middle diagram shows a traditional rectangular lot split down the middle, resulting in two lots.  Each of these lots, can then be combined with the Two-unit Development concept, which may result in each lot having a total of two units.  

The diagram on the far right, depicts a “flag style” urban lot split, where access to the new lot at the rear has access to the street and/or public right of way from a narrow strip of land, resulting in the rear lot resembling the shape of a flag. In the Urban Lot Split scenarios, each lot may accommodate up to two units.

Show All Answers

1. What is SB 9?
2. How do I know if I can develop my property under SB 9?
3. Is there a map where I can check if my property can be affected by SB 9?
4. How many units can I build?
5. What is a “Two-unit Development” versus an “Urban Lot Split”?
6. What are the requirements for development under Tustin’s SB 9 Ordinance?
7. What kind of approval do I need to build using SB 9?
8. My property is in the City’s Cultural Historic District, can I build on my property using SB9?
9. Can my HOA prohibit me from building on my property using SB9?
10. Will I be notified if one of my neighbors decides to build on their property using SB9?