Sign Up Successful!
You now have access to more from Realmo!
    For Sale
    • 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

    680 King Street Ext Charleston, SC 29403

    Sponsored
    For Sale
    Under Contract
    $1,195,000

    MULTI_FAMILY - Charleston, SC

    Property size:
    2,074 SF
    Lot size:
    0.07 Acres
    Days on Market:
    20
    Last Refresh:
    Feb 26 at 9:06 am

    Property Features for 680 King Street Ext

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Standard status
    Active Under Contract
    Rooms
    Bedroom 4, Bedroom 2, Bedroom 1, Bedroom 3
    Bedrooms
    4
    Size
    2,074 SF
    Lot size
    0.07 Acres

    Utilities

    Sewer type
    Public Sewer
    Heating system
    Electric (Heating), Natural Gas
    Cooling system
    Central Air
    Water source
    Public

    Building Details

    Year built
    1910
    Floors in Building
    2
    Number of units
    2
    Building materials
    Wood Siding
    Roof type
    Metal

    We can help!

    Listing Contact
    Sophie Gamble

    The Boulevard Company (843) 806-9830

    Listing agent Sophie Gamble

    Listing date Feb 7, 2026

    MLS# 26000471 Listing URL

    Copyright © 2026 CHS 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

    King Street Mixed-Use Opportunity

    Located on King Street, this mixed-use property offers a storefront business opportunity with upstairs living in a rapidly growing downtown location. The property is situated near the new 12-acre Courier Square redevelopment project and The Peninsula of Charleston retirement community, as well as restaurants such as Leon's Oyster, Melfi's Italian, and Little Jack's Tavern. The property could function as a duplex, live/work space, Airbnb (owner-occupied), or retail space with up to three units. The upstairs area could be divided into two rentals with separate entrances on the porch. The downstairs is currently rented by an interior designer until March 2026. The property is in Short Term Residential Category 2 District. It features six off-street parking spaces, including four behind the property and two tandem spaces, plus golf cart parking/storage space. Recent updates include new exterior paint and downstairs porch floor installed in April 2023, a new standing seam metal roof in 2022, a new downstairs water heater approximately in 2022, and new HVAC systems approximately in 2020 downstairs and 2022 upstairs. The property also has upgraded energy-efficient ultra-violet double-hung windows, except those windows facing King Street. The property is zoned general commercial but can be converted back to a duplex or triplex. The floor plan allows for two bedrooms and one bathroom downstairs and two bedrooms and two bathrooms upstairs, with washer/dryer hookups and six non-working fireplaces in total. The property size is 2074 square feet and the lot size is 0.07 acres. The 2024 income was $64,204 when both units were rented. The 2025 insurance is $5987 and the 2025 property tax is $6673.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Retail space

    Suggested Use

    Restaurant Real Estate Agency Law Firm Dental Office Building Supply Hair Salon Auto Repair Shop Big Box & Wholesale Store Auto Parts Store Gym & Fitness Center

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

    Location Insight

    • Map
    • Local Demand
    City
    Charleston
    County
    Berkeley
    State
    South Carolina
    Longitude
    -79.945087
    Latitude
    32.797583

    Nearby Similar for Sale

    • $479,000
      1,269 SF

      West Ashley Multifamily Opportunity

      Duplex in good condition with potential for expansion.
      1507 Evergreen St, Charleston, SC 29407
      View Details
    • $925,000
      1,461 SF

      Renovated Duplex in Downtown Charleston

      Turnkey duplex near MUSC & CofC, completed renovation in 2025.
      68 Lee St, Charleston, SC 29403
      View Details
    • $450,000
      2,200 SF

      Duplex on Large Lot

      Duplex with potential near West Ashley Greenway and Downtown.
      2534 Hara Ln, Charleston, SC 29414
      View Details
    • $525,000
      986 SF

      Charleston Duplex Near Golf Course

      Duplex in desirable location, potential for rental income.
      2021 Fremont St, Charleston, SC 29412
      View Details
    • $799,000
      2,017 SF

      Renovated Duplex Near Downtown Charleston

      Turn-key duplex renovated in 2025, near downtown Charleston.
      1038 Harbor View Rd, Charleston, SC 29412
      View Details
    • New
      $3,400,000
      3,092 SF

      Renovated Historic Charleston Duplex

      Turnkey, renovated duplex in a desirable downtown location.
      63 Montagu St, Charleston, SC 29401
      View Details
    • $1,695,000
      3,120 SF

      Historic Downtown Charleston Multifamily Investment

      Four one-bedroom apartments near College of Charleston and King St.
      68 Beaufain St, Charleston, SC 29401
      View Details
    • $850,000
      1,058 SF

      Charleston Legal Short Term Rental

      Legal short-term rental with strong revenue in historic downtown Charleston.
      151 Spring St, Charleston, SC 29403
      View Details
    • $1,200,000
      11.02 Acres

      Waterfront Land on Wappoo Road

      11-acre Charleston property with Intracoastal Waterway and Stono River views.
      185 Wappoo Rd, Charleston, SC 29407
      View Details
    • $4,895,000
      7,159 SF

      Historic Charleston Multifamily Investment Opportunity

      Nine-unit property blending historic charm with modern luxury near Colonial Lake.
      176-178 Broad St, Charleston, SC 29401
      View Details
    • $1,975,000
      2,874 SF

      Income Property in Radcliffeborough Neighborhood

      Versatile income-producing property in downtown Charleston's desirable Radcliffeborough neighborhood.
      208 Calhoun St, Charleston, SC 29401
      View Details
    • $1,395,000
      3,361 SF

      Updated Home with Income Potential

      Updated home with ADU in the heart of Riverland Terrace.
      2142 Golfview Dr, Charleston, SC 29412
      View Details

    FAQs

    What type of property is this?
    Mixed-use property - Storefront business with upstairs living in a rapidly growing downtown location.
    Where is this mixed-use property located?
    The property is located at 680 King Street Ext Charleston, SC.
    What is the asking price?
    The asking price for this property is $1,195,000.
    What are key features of this property?
    This property features: - Prime Downtown location on King Street near Courier Square redevelopment and popular restaurants.; - Versatile property suitable for storefront business with upstairs living, duplex, Airbnb (owner-occupied), or retail space with up to 3 units.; - Rare Downtown premium: **6 off-street parking spaces** (4 behind, 2 tandem), plus golf cart parking/storage.
    (843) 806-9830
    Request Owner's contact information
    680 King Street Ext Charleston, SC 29403
    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.
    680 King Street Ext
    Charleston, SC 29403
    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
    680 King Street Ext Charleston, SC 29403
    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

    We can help!
    Listing Contact
    Sophie Gamble
    (843) 806-9830 (843) 619-7816 (843) 813-5222
    Learn more
    Google sign-in failed. Please try again or use another login method.