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    9 Union Street Hallowell, ME 04347

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    Claim this Listing
    New
    For Sale
    $740,000

    COMMERCIAL - Hallowell, ME

    Type:Office
    Property size:
    3,604 SF
    Lot size:
    0.13 Acres
    Price / SF:
    $205/SF
    Added:
    Apr 20, 2026
    Days on Market:
    5
    Last Refresh:
    Apr 24 at 7:06 pm

    Property Features for 9 Union Street

    General Information

    Property type
    Commercial Sale
    Property subtype
    Office
    Zoning
    RB2
    Rooms
    Basement
    Basement
    Sump Pump, Full, Unfinished
    Accessibility
    Accessible Approach with Ramp
    Standard status
    Active
    Size
    3,604 SF
    Lot size
    0.13 Acres

    Taxes and HOA fees

    Tax Year
    2024
    Tax Annual Amount
    13082

    Utilities

    Sewer type
    Public Sewer
    Heating system
    Baseboard, Forced Air, Hot Water(Heating)
    Cooling system
    Central Air
    Water source
    Public

    Building Details

    Year built
    1900
    Number of units
    6
    Flooring type
    Vinyl, Carpet
    Building materials
    Clapboard, Wood Frame
    Roof type
    Shingle

    We can help!

    Listing Contact
    Christopher Vallee

    Listing agent Christopher Vallee

    Listing office LAER 103 Water Street STE 202, Hallowell, ME

    Listing date Apr 20, 2026

    MLS# 1640742

    Copyright © 2026 Maine Listings. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    Hallowell Commercial Building For Sale

    This beautifully maintained professional building is located in desirable Hallowell. The first floor features an anchor tenant, an extremely successful family practice with a solid lease. The second and third floors have five tenants with growth potential. All five tenants currently pay low rents. The real estate has curb appeal, new cedar siding on two sides, a paved parking lot with more than six spaces, a wheelchair accessible ramp, and visibility. The property, suitable for a 1031 tax-free exchange, has a 7% cap rate. The building has a size of 3604 square feet and is located on a 0.13-acre lot. The zoning is RB2.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Jason Rich Law Consultant Hallowell Family Practice Medical Clinic Scott Schiff-Slater, M.D. Pediatrician Dr. Nathan R. ... Pediatrician Mcfarlane Todd Physician

    Suggested Use

    Real Estate Agency Law Firm Restaurant Spa & Massage Center Hair Salon Nail Salon Building Supply Gym & Fitness Center Pharmacy Skin Care Clinic

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

    Location Insight

    • Map
    • Local Demand
    City
    Hallowell
    County
    Kennebec
    State
    Maine
    Longitude
    -69.7911082
    Latitude
    44.2855021

    Nearby Similar for Sale

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      Historic Church with Bulfinch Spire

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    • $1,650,000

      Hallowell Office Building For Sale

      10,754± SF office building in Hallowell, Maine.
      47 Water St, Hallowell, ME
      View Details
    • $425,000
      1,260 SF

      Renovated Duplex with River Frontage

      Two-unit property with renovated first floor and river views.
      228 Water Street, Hallowell, ME 04347
      View Details

    FAQs

    What type of property is this?
    Office building - Well-maintained commercial building with solid tenants and growth potential.
    Where is this office building located?
    The property is located at 9 Union Street Hallowell, ME.
    What is the asking price?
    The asking price for this property is $740,000.
    What are key features of this property?
    This property features: 7% Cap Rate; Anchor tenant is an extremely successful family practice with rock solid lease; Tremendous growth potential with five solid tenants on upper floors
    (207) 242-2041
    We can help!
    Listing Contact
    Christopher Vallee
    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.

    More about this property
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