Add Listing
    Property Lookup
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    400 Congress St Portland, ME 04101
    Back to Search
    Property profile & analytics

    400 Congress St Portland, ME 04101

    View on Map
    • Office properties & Spaces
    Off-Market
    Value Estimations
    Cap Rate Potential
    Location Intelligence

    Current Use by Public Records

    • Social Security Administration / Social Security Office
    • United States Postal Service / Post Office / Logistics Service
    • Travel Visa Pro / Travel Agency
    • Maine Executive Search / Corporate Office
    • Help ME Handyman Services / Hardware & Home Improvement / General Contractor

    Property Details for 400 Congress St

    Property type
    Office properties & Spaces
    Property subtype
    Office Units

    Description

    Located at 400 Congress Street in Portland, Maine (zip code 04101), this Cumberland County office space offers a diverse range of options for businesses of all sizes. The property provides flexible workspace solutions, including traditional office suites, executive offices, coworking spaces, and even medical or creative office setups. Tenancy is multiple, allowing for a variety of configurations to suit individual needs. Businesses can choose from fully furnished and equipped private offices, scalable from single-person setups to large corporate spaces. Customizable options are available, including disaster recovery spaces and day offices. Beyond private offices, the location also offers coworking areas, providing a collaborative and social work environment with both dedicated desks and hot-desking options. Meeting rooms of various sizes are available for rent, equipped with Wi-Fi and presentation technology, suitable for informal meetings, training sessions, interviews, or large conferences. Virtual office solutions are also offered, providing prestigious business addresses, mail handling services, and professional virtual assistant support, including access to office space for a limited number of days per month. Flexible working plans provide access to a global network of workspaces, allowing for seamless transitions between locations. The property caters to a wide spectrum of business needs, offering tailored solutions from small to large-scale operations. While the total building square footage is not specified, the available office spaces range in size to accommodate various business requirements.

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

    • CAP approach

    • Comparable approach

    • Alternative Use

    Location Insight

    • Map
    • Local Demand
    City
    Portland
    County
    Cumberland
    State
    Maine
    Longitude
    -70.2573
    Latitude
    43.6585

    Comparable in this City

    • Value Estimation by Request
      54,400 SF

      151 Middle St

      Medical Office Space • 54,400 SF
      151 Middle St, Portland, ME 04101
      View Details
    • Value Estimation by Request
      132,430 SF

      75 Washington Ave

      Office Units • 132,430 SF
      75 Washington Ave, Portland, ME 04101
      View Details
    • Value Estimation by Request
      18,301 SF

      97A Exchange St

      Coworking space • 18,301 SF
      97A Exchange St, Portland, ME 04101
      View Details
    • Value Estimation by Request
      126,435 SF

      120 Exchange St

      Coworking space • 126,435 SF
      120 Exchange St, Portland, ME 04101
      View Details
    • Value Estimation by Request

      16 Middle St

      Coworking space
      16 Middle St, Portland, ME 04101
      View Details
    • Value Estimation by Request
      10,853 SF

      629 Forest Ave

      Office Units • 10,853 SF
      629 Forest Ave, Portland, ME 04101
      View Details

    Similar Nearby for Sale

    • $1,225,000

      Net Leased Investment Property

      Single tenant property with lease through 2027.
      83-85 India St, Portland, ME 04101
      View Details
    • Contact for pricing
      4,830 SF

      Mixed-Use Building in Old Port

      Mixed-use building in a rapidly appreciating Portland neighborhood.
      85 India St, Portland, ME 04101
      View Details
    • Contact for pricing
      140,684 SF

      Downtown Portland Executive Office Building

      Class A Office Space, 34,569 RSF Available
      511 Congress St, Portland, ME 04101
      View Details
    • Contact for pricing
      16,380 SF

      Mixed-Use Building in Downtown Portland

      16,380± SF mixed-use building in the heart of downtown.
      496 Congress St, Portland, ME 04101
      View Details
    • $1,395,000
      2,861 SF

      Historic Portland Multi-Unit Opportunity

      Rare, flexible multi-unit in a prime Portland location.
      12 Smith St, Portland, ME 04101
      View Details
    • Contact for pricing
      99,488 SF

      Historic Landmark in Portland's Downtown

      Landmark building with value-add potential in Portland's vibrant downtown.
      142 High St, Portland, ME 04101
      View Details

    Similar Nearby for Lease

    • Contact for pricing

      Versatile Workspace Solutions in Portland

      Global network of workspaces with flexible options and prime locations.
      400 Congress St, Portland, ME 04101
      View Details
    • Contact for pricing
      33,074 SF

      Bayside Office Space For Lease

      Up to 33,074 SF of office space available for lease.
      165 Lancaster St, Portland, ME 04101
      View Details
    • Contact for pricing

      Medical/Office Space in Downtown Portland

      Medical or office space available in Portland's Eastern Waterfront.
      144 Forest, Portland, ME 04101
      View Details
    • Contact for pricing
      3,522 SF

      Retail/Office Space on Marginal Way

      Retail/office space in a mixed-use building with high visibility.
      191 Marginal Way, Portland, ME 04101
      View Details
    • Contact for pricing

      ME, Portland - Congress

      Discover many ways to work your way in ME, Portland - Congress
      400 Congress St, Portland, ME 04101
      View Details
    • Contact for pricing

      Old Port Office Space Available

      Office spaces available in the heart of the Old Port.
      57 Exchange St, Portland, ME 04101
      View Details
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    400 Congress St
    Portland, ME 04101
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    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
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Thank You for Inquiry
    400 Congress St, Portland, ME, 04101
    letter with green check mark
    Check your email
    We sent you the
    agent's contact details. yellow underline
    Can't find it?
    Please check your junk/spam folder.
    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!