# 3900 Marsten Avenue, Belmont, CA 94002 > **TL;DR:** land, $5,800,000. Est. $31,020/mo. Listed 329 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $5,800,000 | | Lot Size | 860,310 sqft (19.75 acres) | | Property Type | Land (Other) | | Status | Active Under Contract | | Days on Market | 329 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $29,328 | | Estimated Insurance | $1,692 | | **Total** | **$31,020** | ## Nearby Schools - **Elementary:** BelmontRedwoodShoresElementary - **High:** SequoiaUnionHigh ## Property Highlights - 19.75 acre lot ## Description ### Agent Description *NEW PRICE* RARE Peninsula Offering! One of the Last Open Parcels for Possible Luxury Development! Extraordinary opportunity to acquire lone of the last remaining open tract of land! Bucolic setting, sweeping natural beauty, unmatched future potential. Per the Seller, this property of approx. 19.75 acres may offer the possibility to create 6 to 8 parcels, each envisioned for a luxury estate home+ ADU. Buyer can choose to pursue and qualify under Cal. SB9, a parcel could potentially accommodate 2luxury estate homes + ADUs. *No development potential has been verified. This special property could lend itself to a range of uses: multi-generational living, income opportunity, a family compound, private gated community, premium investment, or signature development, all subject to Buyer investigation & City & County Building Division approval. Part of the acreage was formerly used as a farmhouse with horse stalls & corral, enhancing the property's character & versatility. The lands mature landscape, peaceful surroundings create an environment seldom available! Minutes to premier schools, transportation, SF/Silicon Valley, modern conveniences. A highly coveted location! Buyer must conduct their due diligence regarding buildability, development feasibility, allowable uses & lot size. ## Location - **Address:** 3900 Marsten Avenue, Belmont, CA 94002 - **County:** SanMateo - **Coordinates:** 37.514016, -122.321779 - **Google Maps:** https://www.google.com/maps?q=37.514016,-122.321779 ## Virtual Tour & Media - **Video Tour:** https://www.3900marstenave.com/ ## Listing Agent - **Name:** Wong Real Estate Grp · **License:** 70010239 - **Brokerage:** Keller Williams Peninsula Estates - **Broker Phone:** (650) 627-3700 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/3900-Marsten-Ave_Belmont_CA_94002_M28517-30168?f=listhub&s=MLSLCA&m=ML82028983&c=propsimple) ## Photos ![3900 Marsten Avenue - Photo 1](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f1880699379r.jpg) ![3900 Marsten Avenue - Photo 2](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f2266304707r.jpg) ![3900 Marsten Avenue - Photo 3](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f44557681r.jpg) ![3900 Marsten Avenue - Photo 4](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f4246917416r.jpg) ![3900 Marsten Avenue - Photo 5](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f673018345r.jpg) ![3900 Marsten Avenue - Photo 6](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f2185001791r.jpg) ![3900 Marsten Avenue - Photo 7](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f1039058569r.jpg) ![3900 Marsten Avenue - Photo 8](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f3016009453r.jpg) ![3900 Marsten Avenue - Photo 9](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f1057209009r.jpg) ![3900 Marsten Avenue - Photo 10](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f2546317725r.jpg) ![3900 Marsten Avenue - Photo 11](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f2868161962r.jpg) ![3900 Marsten Avenue - Photo 12](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f1543370670r.jpg) ![3900 Marsten Avenue - Photo 13](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f3972715178r.jpg) ![3900 Marsten Avenue - Photo 14](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f1946041962r.jpg) ![3900 Marsten Avenue - Photo 15](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f3870430804r.jpg) ![3900 Marsten Avenue - Photo 16](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f916450018r.jpg) ![3900 Marsten Avenue - Photo 17](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f33685662r.jpg) ![3900 Marsten Avenue - Photo 18](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f2730402157r.jpg) ![3900 Marsten Avenue - Photo 19](http://lh.rdcpix.com/11ac534960947e1ba55ce8210855fec6l-f934687815r.jpg) --- **MLS#:** ML82028983 | **Updated:** 2026-10-22 **Source:** listhub *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.* [View on PropertySimple](https://www.propertysimple.ai/listing/3900-marsten-avenue-belmont-ca-94002-38148fb0d90248dbb468e04f2fef2151) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/3900-marsten-avenue-belmont-ca-94002-38148fb0d90248dbb468e04f2fef2151#listing", "url": "https://www.propertysimple.ai/listing/3900-marsten-avenue-belmont-ca-94002-38148fb0d90248dbb468e04f2fef2151", "name": "3900 Marsten Avenue, Belmont, CA 94002", "description": "*NEW PRICE* RARE Peninsula Offering! One of the Last Open Parcels for Possible Luxury Development! Extraordinary opportunity to acquire lone of the last remaining open tract of land! Bucolic setting, sweeping natural beauty, unmatched future potential. 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