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$2,500,000 Just Listed
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Property Description
The seller is offering the front portion of the property for sale under ML82028983. This front area is ideally positioned closest to the paved road cul-de-sac and existing utilities. In May 2025, sellers' civil engineer and architect to prepared a proposed lot line adjustment and subdivision plan for the development of two luxury residences, each approximately 4,500 square feet. The lot line adjustment would create two amazing lots one at approx. 27,200 sf and the second at approx. 40,000sf , the larger lot has views of the SF bay and city lights. Build a luxury home for yourself and the second for resale! Preliminary plans for the proposed lot split and building design plans are available for to view. Per the seller, the anticipated lot line adjustment process could take approximately two to three months to complete. The new owner would be fully responsible for obtaining any/all applicable costs for submission, review, permit, building fees, reports and surveys. New owner may choose to proceed with the existing architectural plans or create their own custom home design. With much of the preliminary groundwork for the lot line adjustment is already completed, this opportunity could significantly accelerate the development timeline.
Full Property Details
Full Property Details for 3900-A Marsten Ave
General
- Price: $2,500,000
- Status: Active
- Type: Residential Lots
- Source: RE_Infolink
- MLS ID: ML82036705
- Updated: 3/2/2026
- Added to Site: 2 day(s) ago
Additional Information
- Extras: Not Applicable
Location
- Area: Haskins Estates Etc.
- County: San Mateo
- Cross Streets: Christian Dr/Ralston Ranch Rd
Utilities
- Sewer: Public Sewer
- Water: Public
- Utility Description: Electricity (Available at the Street), Gas (Available at the Street), Public Utilities
Lot Features
- Property View: City Lights, Greenbelt, Hills
- Minimum Lot Size: 67200
- Lot Size (Sq. Ft.): 67,200
- Development Status: Unimproved Land
- Present Use: Vacant
- Zoning: A
- Lot Description: Additional Land Available, Gently Sloped, Possible Lot Split
- Fencing (Description): None
Listed by KW Advisors, Wong Real Estate Grp
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Schools
Schools serving 3900-A Marsten Ave
School Districts:Belmont-Redwood Shores Elementary School District, Sequoia Union High School District
| Name | Grades | Distance |
|---|---|---|
Fox Elementary School 3100 Saint James Road, Belmont, CA 94002 | K-5 | 0.3 mi |
Ralston Intermediate School 2675 Ralston Avenue, Belmont, CA 94002 | 6-8 | 0.6 mi |
Carlmont High School 1400 Alameda de las Pulgas, Belmont, CA 94002 | 9-12 | 1.9 mi |
Disclaimer:
School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 3900-A Marsten Ave
Date
Details
Price
Change
Source
2/28/2026
Listed
$2,500,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 3900-A Marsten Ave
Year
Property Taxes
Change
Tax Assessment
Change
2025
$31,451
4%
$2,620,026
2%
2024
$30,195
2%
$2,568,654
2%
2023
$29,709
5%
$2,518,289
2%
2022
$28,335
3%
$2,468,911
2%
2021
$27,422
1%
$2,420,502
1%
2020
$27,186
1%
$2,395,684
2%
2019
$26,865
2%
$2,348,711
2%
2018
$26,354
1%
$2,302,659
2%
2017
$25,997
2%
$2,257,509
2%
2016
$25,495
—
$2,213,245
2%
2015
$25,622
102%
$2,180,000
109%
2014
$12,677
2%
$1,044,712
—
2013
$12,448
—
$1,039,991
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 3900-A Marsten Ave
3900-A Marsten Ave, Belmont, CA 94002 (MLS# ML82036705) is a Residential Lots property with a lot size of acres. 3900-A Marsten Ave is currently listed for $2,500,000 and was received on February 28, 2026. Want to learn more about 3900-A Marsten Ave? Do you have questions about finding other Residential Lots real estate for sale in Belmont? You can browse all Belmont real estate or contact a Coldwell Banker agent to request more information.

