Add Listing
    Property Lookup
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    738 Islington St Portsmouth, NH 03801-7217
    Back to Search
    Property profile & analytics

    738 Islington St, Portsmouth, NH 03801-7217

    View on Map
    • Super regional malls
    • 27,607 SF
    • 2.62 lot acres
    Off-Market
    Property ID
    US58-0562322
    The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.
    Value Estimations
    $815,000
    Show details
    Cap Rate Potential
    Location Intelligence

    Current Use by Public Records

    • Southport Printing Company / (Bike/Boat/Book/etc) Store / Printing Service
    • LoveWell Veterinary Services / Veterinary Clinic
    • Seacoast Eye Center / Ophthalmologist / (Bike/Boat/Book/etc) Store
    • Dr. Matthew E. Norman, MD / Ophthalmologist
    • NH Liquor & Wine Outlet / (Bike/Boat/Book/etc) Store

    Property Details for 738 Islington St

    Year built
    1996
    Construction
    STEEL FRAME
    Lot size
    2.62 lot acres
    Zone code
    CD4-W
    Property type
    Super regional malls
    Property subtype
    Shopping centers
    APN
    PRSM M:0155 B:0013 L:
    APU
    PRSMM0155B0013L

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

      Method
      Estimation
      ML approach
      $750,000

    • Comparable approach

      Method
      Estimation
      AI Estimate
      $876,000
      Market price range: $273k - $989k

    • Alternative Use

      Use
      Estimation
      NEIGHBORHOOD: SHOPPING CENTER
      $630,000
      Current use
      MEDICAL BUILDING
      $1,215,000
      Change: +93% Conversion: Difficult

    Get a detailed, property-specific estimation — fast and free

    Location Insight

    • Map
    • Local Demand
    City
    Portsmouth
    County
    Rockingham
    State
    New Hampshire
    Longitude
    -70.7713
    Latitude
    43.0694
    CBSA code
    14460
    CBSA name
    BOSTON-CAMBRIDGE-QUINCY, MA-NH METROPOLITAN STATISTICAL AREA

    Property Tax & Assessments

    Tax date
    Tax Amount
    Assessed Land Value
    Assessed Improvement Value
    Total Assessed Value
    Applied Tax Rate
    Land Market Value
    Improvement Market Value
    Total Market Value
    2023
    $74,704
    $1,836,900
    $2,794,500
    $4,631,400
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      29,882 SF

      117 Gosling Rd

      REGIONAL SHOPPING CENTER, MALL
      117 Gosling Rd, Newington, NH 03801-2109
      View Details
    • Value Estimation
      $1,275,000
      50,407 SF

      599 Lafayette Rd

      REGIONAL SHOPPING CENTER, MALL
      599 Lafayette Rd, Portsmouth, NH 03801-5409
      View Details
    • Value Estimation
      $955,000
      62,134 SF

      95 Brewery Ln

      REGIONAL SHOPPING CENTER, MALL
      95 Brewery Ln, Portsmouth, NH 03801-4994
      View Details
    • Value Estimation
      $2,900,000
      9,179 SF

      2001 Woodbury Ave

      REGIONAL SHOPPING CENTER, MALL
      2001 Woodbury Ave, Newington, NH 03801-2843
      View Details
    • Value Estimation
      $8,000,000
      238,513 SF

      50 Fox Run Rd

      REGIONAL SHOPPING CENTER, MALL
      50 Fox Run Rd, Newington, NH 03801-2851
      View Details
    • Value Estimation
      $1,850,000
      89,689 SF

      1500 Lafayette Rd

      REGIONAL SHOPPING CENTER, MALL
      1500 Lafayette Rd, Portsmouth, NH 03801-5649
      View Details

    Similar Nearby for Sale

    • Contact for pricing
      12,780 SF

      Mixed-Use Investment Opportunity

      Mixed-use property with income and growth potential in downtown location.
      165-172 Hanover St, Portsmouth, NH 03801
      View Details
    • Contact for pricing
      12,064 SF

      Mixed-Use Multi-Tenant Property

      Premier mixed-use, multi-tenant property with 12,064 square feet.
      93 Market St, Portsmouth, NH 03801
      View Details
    • $4,390,000

      Mixed-Use Investment Opportunity

      Mixed-use property with income streams in downtown Portsmouth, NH.
      172 Hanover St, Portsmouth, NH 03801
      View Details
    • $5,300,000

      Downtown Portsmouth Mixed-Use Investment

      Prime downtown asset with residential and commercial units.
      93-100 Market St, Portsmouth, NH 03801
      View Details
    • Contact for pricing
      994 SF

      Leased Retail Condo in Portsmouth

      Fully leased retail condo in downtown Portsmouth's vibrant commercial district.
      135 Market St, Portsmouth, NH 03801
      View Details

    Similar Nearby for Lease

    • Contact for pricing

      Retail Space in Portsmouth, NH

      Retail space available in a strong Southern New Hampshire market.
      1600 Woodbury Ave, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Retail Space in Portsmouth, NH

      In-line retail space available in a busy shopping center.
      1465 Woodbury Ave, Portsmouth, NH 03801
      View Details
    • Contact for pricing
      4,000 SF

      Retail Space in Portsmouth, NH

      Retail space available in a strong Southern New Hampshire market.
      1111 Off Market St, Portsmouth, NH 03801
      View Details
    • Contact for pricing
      1,950 SF

      Retail Space in Heritage Commons

      Retail space available in Portsmouth's Heritage Commons shopping center.
      2800 Lafayette Rd, Portsmouth, NH 03801
      View Details
    • $22 SF/Yr

      Retail Spaces in Hannaford-Anchored Plaza

      Retail and office spaces available in Portsmouth's West End.
      800 Islington St, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Route 1 Tire Shop Opportunity

      Equipped tire shop for lease near Portsmouth Traffic Circle.
      500 Maplewood Ave, Portsmouth, NH 03801
      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.
    738 Islington St
    Portsmouth, NH 03801-7217
    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
    738 Islington St, Portsmouth, NH, 03801
    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!