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    3900 Marsten Ave Belmont, CA 94002

    Sponsored
    For Sale
    $7,999,999

    Residential Lots & Land - BELMONT, CA

    Lot size:
    19.75 Acres
    Days on Market:
    16
    Last Refresh:
    Jan 6 at 11:06 pm

    Property Features for 3900 Marsten Ave

    General Information

    Property type
    Land
    Property subtype
    Other
    Standard status
    Active
    Zoning
    A00000
    Lot size
    19.75 Acres

    Building Details

    Architectural style
    Other

    Keller Williams Peninsula Estates (650) 627-3700 [email protected]

    Listing agent Wong Real Estate Grp (650) 627-3700 License #70010239

    Listing date Dec 22, 2025

    MLS# ML82028983 Listing URL

    Copyright © 2026 MLS Listings, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    Rare Peninsula Land Opportunity

    This property offers a rare opportunity to acquire one of the last open parcels for possible luxury development on the Peninsula. The approximately 19.75-acre tract of land is located in a bucolic setting with sweeping natural beauty and unmatched future potential. The property may offer the possibility to create 7 to 8 parcels, each envisioned for a luxury estate home and Accessory Dwelling Unit (ADU). Subject to buyer qualification under California Senate Bill 9 (SB9), a parcel could potentially accommodate 2 luxury estate homes and ADUs. The property could lend itself to a range of uses, including multi-generational living, income opportunity, a family compound, a private gated community, a premium investment, or a signature development, all subject to buyer investigation and City and County Building Division approval. Part of the acreage was formerly used as a farmhouse with horse stalls and a corral, enhancing the property's character and versatility. The land's natural contours, mature landscape, and peaceful surroundings create an environment. The location is minutes from premier schools, transportation, San Francisco, Silicon Valley, and modern conveniences. Buyer must conduct their due diligence regarding buildability, development feasibility, and allowable uses and lot size.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Residential land & home ...

    Suggested Use

    Realty agency Restaurant Law Firm Spa & Massage Dental Office Hair Salon Nail Salon Building Supply Clothing Store Auto Repair Shop

    Zoning and permitted uses should be independently verified with local authorities.

    Location Insight

    • Map
    • Local Demand
    City
    Belmont
    County
    San Mateo
    State
    California
    Longitude
    -122.322597
    Latitude
    37.51414

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    FAQs

    What type of property is this?
    Land - 19.75 acres for luxury development in Belmont, CA.
    Where is this land located?
    The property is located at 3900 Marsten Ave Belmont, CA.
    What is the asking price?
    The asking price for this property is $7,999,999.
    What are key features of this property?
    This property features: - Rare 19.75-acre peninsula property, one of the last open parcels available.; - Potential for luxury development: possibly 7-8 parcels for estate homes + ADUs, or potential for 2 homes + ADUs per parcel under SB9 (buyer to verify).; - Versatile land suitable for multi-generational living, income opportunity, family compound, or private gated community (subject to buyer investigation and approvals).
    (650) 619-2790
    Request Owner's contact information
    3900 Marsten Ave Belmont, CA 94002
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    Belmont, CA 94002
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    Realmo Value Estimation

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.

    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.

    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
    3900 Marsten Ave Belmont, CA 94002
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