Add Listing
    For Lease
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    AI Search
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings

    1 Harbour Place Portsmouth, NH

    View on Map
    Loading data...
    Loading data...
    Loading data...
    For Lease
    Contact for pricing

    Office space with river views in desirable Portsmouth location.

    Type:OFFICE
    Property size:
    10,524 SF
    Lot size:
    1.27 Acres
    Added:
    Nov 24, 2025
    Days on Market:
    130
    Last Refresh:
    Apr 1 at 8:33 pm

    Property Features for 1 Harbour Place

    General Information

    Standard status
    Active
    Size
    10,524 SF
    Lot size
    1.27 Acres
    Property subtype
    OFFICE

    Spaces For Lease

    at 1 Harbour Place Contact us

    We can help!

    Listing Contact
    Russ Doyle

    Listing agent Russ Doyle

    Listing office Two International Group

    Listing date Nov 24, 2025

    Source Moodyscre

    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 Two International Group

    Overview

    High-End Office Space Available

    Available for rent is a 10,524 square foot office space situated in a sought-after area of Portsmouth. Located at One Harbour Place, the property offers high-end space with views of the Piscataqua River and Downtown Portsmouth. On-site private parking is among the building's amenities.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Yaupon Therapeutics Physician Morgan Stanley Financial ... Financial Advisor Daniel Lyons - Morgan ... Financial Advisor The Market Square Group ... Financial Advisor Jane Nelsen - Morgan ... Financial Advisor

    Suggested Use

    Real Estate Agency Restaurant Law Firm Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Auto Repair Shop Pharmacy

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

    Location Insight

    • Map
    • Local Demand
    City
    Portsmouth
    County
    Strafford
    State
    New Hampshire
    Longitude
    -70.7542
    Latitude
    43.078

    Nearby Similar for Lease

    • Contact for pricing

      Prime Retail Space on Route 1

      7,000 SF retail space in high-visibility Portsmouth location.
      2299 Lafayette Road, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Downtown Portsmouth Modern Office Space

      Modern office space in downtown Portsmouth with parking and amenities.
      299 Hanover Street, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Downtown Portsmouth Office For Lease

      Office space for lease in downtown Portsmouth, available immediately.
      159 Middle Street, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Retail/Office Space in Portsmouth

      Updated retail/office space with patio in Portsmouth's North End.
      33 Deer Street, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Downtown Portsmouth Office Suites Available

      Move-in-ready office suites in a vibrant downtown location.
      10 Vaughan, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Downtown Portsmouth Office Space Available

      Move-in-ready office suites in a vibrant downtown location.
      10 Vaughan, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Downtown Portsmouth Office Space Available

      Move-in-ready office suites in a vibrant, walkable downtown location.
      10 Vaughan, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Retail Space in Portsmouth, NH

      Retail space for lease in Portsmouth's West End.
      821 Islington Street, Portsmouth, NH 03801
      View Details
    • Sponsored
      Contact for pricing

      Portsmouth

      170 Commerce Way, Unit 200, Portsmouth, NH 03801
      View Details
    • $17/mo

      Retail/Office Space For Lease

      Retail/office space with ample parking and convenient highway access.
      72 Mirona Rd, Portsmouth, NH
      View Details
    • $10/mo

      Portsmouth Office Space For Lease

      Versatile office space available for lease in Portsmouth, New Hampshire.
      500 Maplewood Ave unit: A, Portsmouth, NH 03801
      View Details
    • Contact for pricing

      Versatile Commercial Space on Lafayette Road

      Adaptable space suitable for medical, retail, restaurant, or office use.
      750 Lafayette Road, Portsmouth, NH 03801
      View Details

    FAQs

    What type of property is this?
    Office units - Office space with river views in desirable Portsmouth location.
    Where is this office units located?
    The property is located at 1 Harbour Place Portsmouth, NH.
    What is the lease rate?
    The lease rate is $40 SF/Yr.
    What are key features of this property?
    This property features: Desirable Portsmouth Location; High‑End Office Space; Beautiful Views of Piscataqua River and Downtown Portsmouth
    (603) 770-5130 Call to check price and availability
    We can help!
    Contact for Pricing
    Please call us for current price
    and status of this listing
    Russ Doyle
    Learn More
    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.
    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

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!