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    Renovated 6-Unit Building Somerville Title is generated by Realmo AI

    109 Walnut Street, Somerville, MA 02145

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    For Sale
    $3,360,000

    Fully renovated 6-unit building in desirable Winter Hill neighborhood.

    Type:Multi-family
    Property size:
    8,060 SF
    Price / SF:
    $416/SF
    Added:
    Apr 21, 2026
    Days on Market:
    43
    Last Refresh:
    May 8 at 2:39 am

    Property Features for 109 Walnut Street

    General Information

    Standard status
    Active
    Size
    8,060 SF
    Property subtype
    Multi-family

    Building Details

    Year Built
    1920

    We can help!

    Listing Contact
    Lior Rozhansky

    Listing office Keller Williams Realty Evolution

    Listing date Apr 21, 2026

    Source Jbarrettrealty

    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 Keller Williams Realty Evolution

    HighLights

    • Prime location directly across from the new Gilman Square green line stop.
    • Fully renovated units (kitchen/bath/laundry, plumbing/electric) between 2021‑2023.
    • Stabilized 6‑unit building generating a gross monthly rent roll of $20,400.
    • New roof installed in 2023 and rebuilt rear decks in 2024.
    • Each unit features 3 bedrooms and 1 bathroom with spacious layouts and high ceilings.
    • Located in the desirable Winter Hill neighborhood of Somerville, close to Assembly and Union Square.

    Overview

    This 8,060 square foot building features six units, each with three bedrooms and one bathroom, characterized by large rooms and high ceilings. The property is located in the Winter Hill neighborhood of Somerville, directly across from the new Gilman Square green line stop. The building has undergone extensive renovations between 2021 and 2023, including kitchen, bath, and laundry work, as well as plumbing and electric improvements in each unit. A new roof was installed in 2023, and the rear decks were fully rebuilt in 2024. The property includes split utilities, a driveway, and a fenced-in yard. Leases are in place throughout. The gross rent roll is $20,400 per month. This property presents an opportunity for investors, close to the development around Winter Hill, Assembly, and Union Square in Somerville.
    Location Intelligence

    Current Use by Public Records

    Apartment buildings

    Suggested Use

    Law Firm Restaurant Real Estate Agency Spa & Massage Center Dental Office Hair Salon Nail Salon Food Market Grocery & Convenience Store Skin Care Clinic

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

    Location Insight

    • Map
    • Local Demand
    City
    Somerville
    County
    Middlesex
    State
    Massachusetts
    Longitude
    -71.0930631
    Latitude
    42.3869905

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    FAQs

    What type of property is this?
    Apartment building - Fully renovated 6-unit building in desirable Winter Hill neighborhood.
    Where is this apartment building located?
    The property is located at 109 Walnut Street Somerville, MA.
    What is the asking price?
    The asking price for this property is $3,360,000.
    What are key features of this property?
    This property features: Prime location directly across from the new Gilman Square green line stop.; Fully renovated units (kitchen/bath/laundry, plumbing/electric) between 2021‑2023.; Stabilized 6‑unit building generating a gross monthly rent roll of $20,400.
    We can help!
    Listing Contact
    Lior Rozhansky
    Learn More
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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.

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