3900 Marsten Avenue, Belmont, CA 94002

This for-sale land offering totals approximately 19.75 acres and presents a peninsula-style opportunity for a buyer exploring residential development. Per the seller, the tract may be able to support a subdivision into roughly 6 to 8 parcels, with each parcel envisioned for a luxury estate home plus an ADU. The seller also notes potential qualification under Cal. SB9, where a parcel could accommodate 2 luxury estate homes with ADUs, subject to the buyer meeting applicable requirements. No development potential has been verified, and the buyer must confirm buildability, feasibility, allowable uses, and lot size through City and County Building Division approval.

The property includes areas that were formerly used as a farmhouse site, along with horse stalls and a corral, adding character and existing site history to the acreage. A mature landscape and peaceful surroundings are part of the overall setting, while the buyer also benefits from proximity to schools and transportation, with access to the SF/Silicon Valley region and nearby conveniences.

For buyers and developers, the site’s flexible possibilities may support concepts such as multi-generational living, income-producing arrangements, a family compound, a private gated community, or a signature development plan. Any specific end use, parcel configuration, and project design will be subject to buyer due diligence and local approvals.