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    First-Floor Office Suite with Private Entrance Title is generated by Realmo AI

    81 Portsmouth Avenue, Stratham, NH 03885

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    COMMERCIAL - Stratham, NH

    Property size:
    1,265 SF
    Lot size:
    2.02 Acres
    Added:
    Mar 14, 2025
    Days on Market:
    450
    Last Refresh:
    Jun 6 at 4:06 pm

    Property Features for 81 Portsmouth Avenue

    General Information

    Property type
    Commercial Lease
    Property subtype
    Other
    Zoning
    PRE P
    Standard status
    Active
    Lot size
    2.02 Acres

    Utilities

    Utilities
    Cable Available
    Heating system
    Oil
    Cooling system
    Central Air
    Water source
    Private

    Building Details

    Year built
    1975
    Building materials
    Wood Frame, Wood Siding
    Roof type
    Shingle

    We can help!

    Listing Contact
    Steve Cotran

    Listing agent Steve Cotran License #008985

    Listing office RE/MAX Area Real Estate Network LTD 685 Massabesic St., Manchester, NH

    Listing date Mar 14, 2025

    MLS# 5032202

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

    HighLights

    • Office suite for lease on Route 108/33 in the heart of Stratham
    • Suite A offers 1,265 SF total on the first floor with access from a common entryway
    • Private exterior entrance plus a personal reception area and 3–4 additional office/storage rooms
    • Includes a private bathroom
    • Lease is all‑inclusive, covering heat, electricity, and air conditioning
    • Approx. 21,000 vehicles per day traffic count and ample on‑site parking for tenants and clients

    Overview

    Suite A is a first-floor office space designed for a professional workflow, with access from a common central entryway plus a private entrance directly to the outside. The suite includes a personal reception area, a private bathroom, and an additional set of rooms that can support office use or storage, depending on tenant needs.

    The property is located in the heart of Stratham on Route 108/33, providing straightforward visibility and access. Public remarks indicate approximately 21,000 vehicles per day on the route, along with ample parking for tenants and clients.

    This layout can accommodate a range of office tenants that want client-facing space at the entry and flexibility in the back rooms for offices or storage. The lease is described as all-inclusive, covering heat, electricity, and air conditioning, which helps simplify occupancy costs for day-to-day operations. The space is offered for rent with zoning noted as PRE P, and the owner is listed as a licensed real estate agent.
    Property Profile Location Intelligence

    Current Use by Public Records

    The Parkinson's Plan Medical Clinic Embrace Integrative Health Alternative Medicine Practice KRI Training Center RE/MAX Area Real ... Real Estate Agency Couture Bonnie H ... Physician

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Stratham
    County
    Rockingham
    State
    New Hampshire
    Longitude
    -70.918089
    Latitude
    43.012396

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    FAQs

    What type of property is this?
    Office units - First-floor Suite A offers a private exterior entrance, dedicated bathroom, and all-inclusive utilities in a high-visibility setting.
    Where is this office units located?
    The property is located at 81 Portsmouth Avenue Stratham, NH.
    What are key features of this property?
    This property features: Office suite for lease on Route 108/33 in the heart of Stratham; Suite A offers 1,265 SF total on the first floor with access from a common entryway; Private exterior entrance plus a personal reception area and 3–4 additional office/storage rooms
    (603) 782-4418
    We can help!
    Listing Contact
    Steve Cotran
    Real Estate License ID: 008985
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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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    81 Portsmouth Avenue, Stratham, NH 03885
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