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    19 William St Portland, ME 04103

    Sponsored
    For Sale
    $995,000

    MULTI_FAMILY - Other - Portland, ME

    Property size:
    3,522 SF
    Lot size:
    0.12 Acres
    Days on Market:
    1
    Last Refresh:
    Feb 3 at 9:06 pm

    Property Features for 19 William St

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Standard status
    Active
    Zoning
    RN3
    Rooms
    Basement, Bathroom 2, Bathroom 3, Bathroom 1
    Parking features
    Off Street
    Patio and Porch features
    Deck
    Interior features
    Bathtub, One-Floor Living, Storage
    Basement
    Unfinished, Full
    Size
    3,522 SF
    Lot size
    0.12 Acres

    Utilities

    Sewer type
    Public Sewer
    Heating system
    Hot Water(Heating)
    Water source
    Public

    Building Details

    Year built
    1915
    Floors in Building
    3
    Number of units
    3
    Flooring type
    Tile, Vinyl, Wood
    Building materials
    Vinyl Siding, Wood Frame
    Roof type
    Shingle
    Architectural style
    Other
    Additional Structures
    Storage

    We can help!

    Listing Contact
    Thomas Landry

    Benchmark Real Estate

    Listing agent Thomas Landry (207) 775-0248

    Listing date Feb 3, 2026

    MLS# 1651038

    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.

    Learn more

    Property Insight Report

    Overview

    Classic Triplex in Oakdale Neighborhood

    Located on a quiet, tree-lined residential street just off Portland's peninsula, in the heart of the highly desirable Oakdale neighborhood, 19 Williams Street is a classic turn-of-the-century triple-decker. The location offers close proximity to the University of Southern Maine, Woodfords Corner's shops, restaurants, bars, groceries, and boutiques, as well as the recreation and trails surrounding Portland's Back Cove. The property features three spacious units, each offering a traditional layout with three bedrooms, one bath, kitchens, formal dining rooms, and living rooms, along with front porches and generous room sizes throughout. Original period details remain intact, including hardwood floors, built-ins, and classic trim, while numerous updates provide modern efficiency and comfort. Improvements include replacement windows and updated, efficient gas heating systems for each unit, with fully separate utilities where tenants pay their own heat, hot water, and electricity. Additional highlights include a rare two-car garage, off-street parking, and sunny exposure. The property is well maintained and thoughtfully updated. The property size is 3522 square feet and the lot size is 0.12 acres. This property presents an ideal opportunity as a condo alternative, single-family alternative, or owner-occupied investment.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Triplexes

    Suggested Use

    Law Firm Real Estate Agency 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
    Portland
    County
    Cumberland
    State
    Maine
    Longitude
    -70.278157
    Latitude
    43.66597

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    FAQs

    What type of property is this?
    Triplex - Turn-of-the-century triplex in Portland's desirable Oakdale neighborhood.
    Where is this triplex located?
    The property is located at 19 William St Portland, ME.
    What is the asking price?
    The asking price for this property is $995,000.
    What are key features of this property?
    This property features: - Highly desirable Oakdale neighborhood location, walkable to shops, restaurants, University of Southern Maine, and Back Cove.; - Three spacious units, each with three bedrooms, one bath, kitchens, formal dining rooms, and living rooms.; - Separate utilities for each unit (tenants pay their own heat, hot water, and electricity).
    (207) 775-0248
    Request Owner's contact information
    19 William St Portland, ME 04103
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    Portland, ME 04103
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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
    19 William St Portland, ME 04103
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    We can help!
    Listing Contact
    Thomas Landry
    (207) 775-0248
    Learn more
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