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Residential Land Subdivision Opportunity
For Sale
$1,500,000

3900-A Marsten Ave, Belmont, CA 94002

Land for sale with potential for two luxury residences.

Property SizeContact for details
Days on Market105

Property Features for 3900-A Marsten Ave

General Information

Standard status Active
Property subtype Land
Listing Agency: KW Advisors
Listed By: Wong Real Estate Grp · License #70010239
Source: Elliman
Added: Apr 27 Changed: Aug 8 Last Checked: Aug 8 at 3:02PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of KW Advisors

Investment Insights

Based on property information with market context.

The front portion of the property is available for sale, situated near a paved road cul-de-sac and existing utilities. A proposed lot line adjustment and subdivision plan, prepared by a civil engineer and architect in May 2025, envisions the development of two luxury residences, each approximately 4,500 square feet. The lot line adjustment would create two lots, one approximately 27,200 square feet and the second approximately 40,000 square feet; the larger lot offers views of the San Francisco Bay and city lights. Preliminary plans for the proposed lot split and building design are available. According to the seller, the lot line adjustment process is anticipated to take approximately two to three months to complete. The new owner will be responsible for all costs associated with submission, review, permits, building fees, reports, and surveys. The new owner may proceed with the existing architectural plans or create their own custom home design. With much of the preliminary groundwork for the lot line adjustment already completed, this opportunity could significantly accelerate the development timeline. The bike score is 33, indicating it is somewhat bikeable, and the walk score is 16, indicating it is car-dependent.

Key Highlights

  • Opportunity to develop two luxury residences (approx. 4,500 sq ft each) with potential for resale of one.
  • Proposed lot line adjustment creates two lots: one approx. 27,200 sq ft and the other approx. 40,000 sq ft with SF Bay and city light views.
  • Front portion of property is ideally located closest to the paved road cul‑de‑sac and existing utilities.

Property Analytics

Current Use

Residential land & home ...

Suggested Use

Top Pick Real Estate Agency Law Firm Restaurant Hair Salon Spa & Massage Center Dental Office

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

120
Businesses Nearby

Demographics for 94002, CA

28,513
Population
11,307
Households
2.5
Avg Household Size
40
Median Age
69%
College-Educated
96%
High-School Grad
5.6 sq mi
ZIP Area
5,092
Density / Sq Mi
$204,573
Median Household Income
$120,322
Median Earnings
$2,889
Median Rent
$2,000,001
Median Home Value
Rey
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Frequently Asked Questions

What type of property is this?
Residential land & home lot - Land for sale with potential for two luxury residences.
Where is this residential land & home lot located?
The property is located at 3900-A Marsten Ave Belmont, CA.
What is the asking price?
The asking price for this property is $1,500,000.
What are key features of this property?
This property features: Opportunity to develop **two luxury residences (approx. 4,500 sq ft each)** with potential for resale of one.; Proposed lot line adjustment creates two lots: one approx. 27,200 sq ft and the other approx. 40,000 sq ft with **SF Bay and city light views**.; Front portion of property is ideally located closest to the paved road cul‑de‑sac and existing utilities.
More about this property
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