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    Two-Family Residential Income Property Title is generated by Realmo AI

    13-15 Columbia St, Watertown, MA 02472

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    New
    For Sale
    $1,225,000

    Well-maintained two-family with period details, porches, studies in both units, and updated heating and electrical systems.

    Type:Investment
    Property size:
    2,862 SF
    Price / SF:
    $428/SF
    Added:
    Jun 4, 2026
    Days on Market:
    3
    Last Refresh:
    Jun 6 at 5:34 am

    Property Features for 13-15 Columbia St

    General Information

    Standard status
    Active
    Size
    2,862 SF
    Property subtype
    Investment

    Building Details

    Year Built
    1916

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    Listing Contact
    The Petrowsky Jones Group

    Listing agent The Petrowsky Jones Group

    Listing office

    Listing date Jun 4, 2026

    Source Elliman

    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 The Petrowsky Jones Group

    HighLights

    • Two‑family home built in 1916 with 2,862 sq ft of living space on a tree‑lined residential side street
    • Period details include hardwood floors, crown moldings, built‑in china cabinets, pantries, generously proportioned windows, and good‑height ceilings
    • Two wood‑burning fireplaces and both units include studies
    • Upgrades from the past 7 years include 2 newer heating systems and upgraded 100‑amp electrical service for each unit
    • Leases for both units expire August 31, 2026
    • Porches and convenient access to Watertown Sq. (0.8 mile) with Silver Line service to downtown Boston

    Overview

    This early 20th-century two-family home offers 2,862 square feet across two units, featuring hardwood floors, generously proportioned windows, and good-height ceilings. Period finishes include crown moldings, built-in china cabinets, and pantries, along with two wood-burning fireplaces. Each unit also includes a study and separate porches, with practical layouts designed for both day-to-day efficiency and comfortable living. Recent improvements noted include two newer heating systems and upgraded 100 amp electrical service for each unit.

    The property is located on a tree-lined residential side street in the Oakley neighborhood of Watertown. It is about 0.8 mile from Watertown Square and the Silver Line route to downtown Boston. The listing also notes proximity to the brand-new Watertown High School, as well as nearby shops and restaurants, with access to Cambridge and major roadways including Storrow Drive and the Mass Pike.

    For investors and owner-occupants, the unit design supports multiple living needs with studies in both apartments and consistent period character throughout. Both leases are scheduled to expire August 31, 2026, providing defined timing for future occupancy planning.
    Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Watertown
    County
    Middlesex
    State
    Massachusetts
    Longitude
    -71.1765505
    Latitude
    42.370158

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    FAQs

    What type of property is this?
    Duplex - Well-maintained two-family with period details, porches, studies in both units, and updated heating and electrical systems.
    Where is this duplex located?
    The property is located at 13-15 Columbia St Watertown, MA.
    What is the asking price?
    The asking price for this property is $1,225,000.
    What are key features of this property?
    This property features: Two‑family home built in 1916 with 2,862 sq ft of living space on a tree‑lined residential side street; Period details include hardwood floors, crown moldings, built‑in china cabinets, pantries, generously proportioned windows, and good‑height ceilings; Two wood‑burning fireplaces and both units include studies
    (617) 504-6330
    We can help!
    Listing Contact
    The Petrowsky Jones Group
    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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