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    Beacon Hill Brownstone with Potential Title is generated by Realmo AI

    92 Chestnut Street, Boston, MA 02108

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    For Sale
    $6,000,000

    Four-story brownstone with flexible use options in prime location.

    Type:Multi-family / 3 Family - 3 Units Up/Down
    Property size:
    5,779 SF
    Price / SF:
    $1,038/SF
    Added:
    Mar 20, 2026
    Days on Market:
    78
    Last Refresh:
    Mar 20 at 8:33 pm

    Property Features for 92 Chestnut Street

    General Information

    Standard status
    Active
    Size
    5,779 SF
    Property subtype
    Multi-family / 3 Family - 3 Units Up/Down

    Building Details

    Year Built
    1848

    We can help!

    Listing Contact
    Mary Beth Kelley

    Listing agent Mary Beth Kelley License #9555709

    Listing office Keller Williams Realty Boston-Metro | Back Bay

    Listing date Mar 20, 2026

    Source Compass

    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 Boston-Metro | Back Bay

    HighLights

    • Rare four‑story brownstone on a coveted Beacon Hill block, offering approximately 6,333 square feet.
    • Flexible use as a three‑family, condo conversion, or single‑family with in‑law suite; delivered vacant.
    • Includes two private outdoor spaces: a patio off Unit 1 and a private roof deck from the top floor duplex penthouse Unit 3 with sweeping Beacon Hill views.
    • Retains original architectural detail with high ceilings, hardwood floors, and oversized windows providing abundant natural light.
    • Unit 3 is a duplex 3BR/2Bath with a wood‑burning fireplace and direct access to the roof deck.
    • Full basement with masonry arches and a unique history as the former Warren Museum of Natural History.

    Overview

    This four-story brownstone, situated on a coveted block in Beacon Hill, offers a rare acquisition opportunity. The property at 92 Chestnut Street comprises three units, totaling approximately 6,333 square feet, including a full basement featuring masonry arches. Two private outdoor spaces enhance the property: a patio accessible from Unit 1 and a private roof deck for the top-floor duplex penthouse, Unit 3. The building retains original architectural details, including high ceilings, hardwood floors, and oversized windows that provide abundant natural light. Historically, the building housed the Warren Museum of Natural History. Unit 3 is a duplex featuring three bedrooms, two bathrooms, a wood-burning fireplace, and direct access to the roof deck, which offers sweeping views of Beacon Hill. The property offers flexible use options as a three-family residence, condo conversion, or single-family home with an in-law suite. The building will be delivered vacant. Pilings were inspected, and a test pit was completed in February 2026. An engineer’s report is available. The property is offered as is.
    Location Intelligence

    Current Use by Public Records

    Triplexes

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Boston
    County
    Suffolk
    State
    Massachusetts
    Longitude
    -71.070644
    Latitude
    42.356707

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    FAQs

    What type of property is this?
    Triplex - Four-story brownstone with flexible use options in prime location.
    Where is this triplex located?
    The property is located at 92 Chestnut Street Boston, MA.
    What is the asking price?
    The asking price for this property is $6,000,000.
    What are key features of this property?
    This property features: Rare four‑story brownstone on a coveted Beacon Hill block, offering approximately 6,333 square feet.; Flexible use as a three‑family, condo conversion, or single‑family with in‑law suite; delivered vacant.; Includes two private outdoor spaces: a patio off Unit 1 and a private roof deck from the top floor duplex penthouse Unit 3 with sweeping Beacon Hill views.
    (617) 542-0012
    We can help!
    Listing Contact
    Mary Beth Kelley
    Real Estate License ID: 9555709
    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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