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    The Largest CRE Database in the US with Over 1 Million Listings

    3900-A Marsten Ave Belmont, CA 94002

    Sponsored
    For Sale
    $2,500,000

    Residential Lots & Land - BELMONT, CA

    Lot size:
    0.62 Acres
    Days on Market:
    2
    Last Refresh:
    Mar 3 at 11:06 am

    Property Features for 3900-A Marsten Ave

    General Information

    Property type
    Land
    Property subtype
    Other
    Standard status
    Active
    Zoning
    A
    Lot size
    0.62 Acres

    Building Details

    Architectural style
    Other

    We can help!

    Listing Contact
    Wong Real Estate Grp

    Keller Williams Peninsula Estates (650) 627-3700

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

    Listing date Mar 2, 2026

    MLS# ML82036705 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.

    Learn more

    Property Insight Report

    Overview

    Residential Land Opportunity in Belmont

    The front portion of the property is available for sale, ideally located 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 for review. 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 applicable costs related to submission, review, permit, building fees, reports, and surveys. The new owner may proceed with the existing architectural plans or create a custom home design. With much of the preliminary groundwork for the lot line adjustment already completed, this opportunity could accelerate the development timeline. The property is zoned A and located in Belmont, California.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Residential land & home ...

    Suggested Use

    Real Estate Agency Restaurant Law Firm Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Auto Repair Shop Gym & Fitness Center

    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?
    Residential land & home lot - Land for sale with potential for luxury residences development.
    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 $2,500,000.
    What are key features of this property?
    This property features: - Opportunity to develop **two luxury residences (approx. 4,500 sq ft each)**.; - Proposed lot line adjustment creates two lots: approx. 27,200 sq ft and approx. 40,000 sq ft.; - **Larger lot offers views of the SF Bay and city lights.**
    (650) 619-2790
    Request Owner's contact information
    3900-A Marsten Ave Belmont, CA 94002
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    Belmont, CA 94002
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    Realmo Value Estimations

    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.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    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.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    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-A Marsten Ave Belmont, CA 94002
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    We can help!
    Listing Contact
    Wong Real Estate Grp
    Real Estate License ID: 70010239
    (650) 619-2790 (650) 627-3700
    Learn more
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