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    The Largest CRE Database in the US with Over 1 Million Listings

    2123 Sea Island Pkwy Saint Helena Island, SC 29920

    Sponsored
    For Sale
    $650,000

    COMMERCIAL - St. Helena Island, SC

    Lot size:
    0.47 Acres
    Days on Market:
    62
    Last Refresh:
    Feb 8 at 4:06 pm

    Property Features for 2123 Sea Island Pkwy

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Standard status
    Active
    Zoning
    Residential/Commercial
    APN
    R300 020 00b 0011 0000
    Lot size
    0.47 Acres

    Utilities

    Water front
    1

    We can help!

    Listing Contact
    Reynolds Robinson

    Principal Advisors (800) 530-0549

    Listing agent Reynolds Robinson (800) 530-0549 License #129060

    Listing date Dec 9, 2025

    MLS# 192614

    Copyright © 2026 Lowcountry Regional MLS. 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

    Highway 21 Mixed-Use Opportunity

    Located along Highway 21 on Harbor Island, this property features a versatile setup on a 0.47-acre parcel. The site includes a three-story, 3,520 SF building, a 1,000 SF utility shed, and a paved parking lot. The building, occupied by Tidewatch Vacation Rentals since 2018, is in good condition and offers a flexible layout. The basement provides storage and laundry facilities, while the upper floors feature offices and a full bathroom. This arrangement creates opportunities for office, live-work, residential, or short-term rental use. The location offers exposure to resort and gated community traffic due to its proximity to Fripp Island, Harbor Island, and Dataw Island. The property also boasts Lowcountry water and marsh views on one of South Carolina's barrier islands.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Mixed-use properties

    Suggested Use

    Restaurant Real Estate Agency Hotel & Motel Food Market Travel Agency Bed & Breakfast Restaurant Fish Market

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

    Location Insight

    • Map
    • Local Demand
    City
    Saint Helena Island
    County
    State
    South Carolina
    Longitude
    -80.441488
    Latitude
    32.39647

    Nearby Similar for Sale

    • $449,000

      Waterfront Townhome on Dataw Island

      Furnished two-bedroom townhome with waterfront views and community amenities.
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      View Details
    • $59,900
      1,080 SF

      Ocean-Marsh View Condo Villa

      Two-bedroom condo with ocean and marsh views, fractional ownership.
      6 Cedar Reef Dr, Saint Helena Island, SC 29920
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    • $1,450,000
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      St. Helena Island Commercial Property

      Commercial property in the heart of St. Helena Island.
      1760 Sea Island Pkwy, Saint Helena Island, SC 29920
      View Details

    FAQs

    What type of property is this?
    Mixed-use property - Versatile property with Hwy-21 frontage, suitable for various uses.
    Where is this mixed-use property located?
    The property is located at 2123 Sea Island Pkwy Saint Helena Island, SC.
    What is the asking price?
    The asking price for this property is $650,000.
    What are key features of this property?
    This property features: - Prime Hwy-21 frontage on Harbor Island with high visibility.; - Versatile 3,520 SF three-story building suitable for office, live-work, residential, or short-term rental use.; - Gorgeous Lowcountry water and marsh views.
    (843) 986-7396
    Request Owner's contact information
    2123 Sea Island Pkwy Saint Helena Island, SC 29920
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    Saint Helena Island, SC 29920
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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
    2123 Sea Island Pkwy Saint Helena Island, SC 29920
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    We can help!
    Listing Contact
    Reynolds Robinson
    Real Estate License ID: 129060
    (843) 986-7396
    Learn more
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