Who builds SB-9 projects in the South Bay?

Excalibur Builders Inc. (California CSLB license 1037968) is a licensed Bay Area general contractor that builds SB-9 two-unit and lot-split projects across the South Bay, from permitting through final inspection.

What is involved in building an SB-9 lot split?

Beyond the two-unit construction, an SB-9 lot-split build involves the parcel map or condo map, separate utility service, and meeting the city's objective standards. Excalibur manages the build from preconstruction through final inspection.

Building an SB-9 lot split: what happens after the city says yes

Getting an SB-9 project approved is the part everyone talks about. Building it is the part that decides whether you make money. The approval is permission. The construction is where the real work, and the real cost, lives.

Approval is the start line, not the finish

A planning approval confirms what you are allowed to build. It says nothing about splitting the utilities, running new services, or the months it can take to get power to a new parcel. We have seen approved SB-9 projects sit for the better part of a year on things that had nothing to do with the design. That gap is exactly where an experienced builder earns the fee.

The construction realities that move the budget

Separate utility services. A second home on a split lot usually needs its own water, sewer, gas, and electric. The PG&E timeline for a new electric service is often the single longest item on the entire job.
Site work and access. Two homes on a lot that held one means new driveways, drainage, and sometimes fire access the old single house never needed.
The second unit is legally a primary dwelling, not an ADU, which changes how it is treated for setbacks, services, and final sign-off.

How we build it

We sequence the long-lead items first. The utility applications and the PG&E request go in early, before they become the thing everyone is waiting on. We build the two structures on a schedule that shares crews and deliveries instead of doubling them. And we plan the inspections so the project moves through the building department in one clean line instead of backtracking.

Know before you build

If you have not confirmed the lot actually qualifies and pencils, that comes first, before plans and before a shovel. ClearPath Development, an independent feasibility advisory, publishes a plain-language breakdown of what qualifies and what stops most lots. See SB-9 explained. Once you know the project is real, we build it.

Have an approved or in-progress SB-9 project?

Bring us the approval and the plans. We will map the utilities, the PG&E timeline, and the site work, and give you a real schedule and budget.

Request a consultation

General information from a licensed general contractor, not legal advice. Whether a specific parcel qualifies for SB-9 depends on its facts and the local jurisdiction.