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    319 Washington St Barnwell, SC 29812

    Sponsored
    For Sale
    $350,000

    COMMERCIAL - Barnwell, SC

    Type:Office
    Property size:
    3,169 SF
    Lot size:
    0.73 Acres
    Days on Market:
    2
    Last Refresh:
    Feb 28 at 5:06 am

    Property Features for 319 Washington St

    General Information

    Special listing conditions
    Standard
    Property type
    Commercial Sale
    Property subtype
    Office
    TransactionType
    Standard
    Standard status
    Active
    Window features
    Window Coverings, Insulated Windows
    APN
    072-14-15-018
    Interior features
    Entrance Foyer, Bookcases, Cable Available, Ceiling Fan(s)
    Accessibility
    Accessible Approach with Ramp
    Size
    3,169 SF
    Lot size
    0.73 Acres

    Utilities

    Utilities
    Cable Available
    Sewer type
    Public Sewer
    Heating system
    Natural Gas
    Cooling system
    Central Air
    Water source
    Public

    Building Details

    Year built
    1955
    Floors in Building
    1
    Flooring type
    Carpet
    Building materials
    Brick, Drywall
    Roof type
    Shingle

    We can help!

    Listing Contact
    Rebekah Grubbs

    Arete Real Estate (803) 571-7338

    Listing agent Rebekah Grubbs (803) 571-7338

    Listing date Feb 27, 2026

    MLS# 222019

    Copyright © 2026 Aiken Association of REALTORS®. 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

    Barnwell Office Building For Sale

    Located in downtown Barnwell, South Carolina, this 3,169 square foot brick office building, constructed in the 1950s, presents an investment opportunity. The building was renovated in the 1990s, which included the installation of energy-efficient windows. It features two HVAC systems. The interior includes nine individual office spaces, two conference rooms, and three bathrooms. Front and rear entryways each have their own reception area. Custom solid wood stained doors, trim, and built-in bookcases are present. The property is currently generating income with two tenants in place. The sale includes the adjacent 0.73-acre lot, which can be used for parking, expansion, or future development. The property is located in a visible and established area of Barnwell.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Moore Law Firm ... Law Firm Moore Tim Law Firm

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Barnwell
    County
    Barnwell
    State
    South Carolina
    Longitude
    -81.362801
    Latitude
    33.242919

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    FAQs

    What type of property is this?
    Office building - 1950s brick office building in downtown Barnwell, South Carolina.
    Where is this office building located?
    The property is located at 319 Washington St Barnwell, SC.
    What is the asking price?
    The asking price for this property is $350,000.
    What are key features of this property?
    This property features: - Income-producing property with two existing tenants, providing immediate cash flow.; - Includes an adjacent lot, offering options for parking, expansion, or future development.; - Nine individual office spaces allow for multiple rental income streams and reduced risk.
    (803) 571-7338
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    319 Washington St Barnwell, SC 29812
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    Barnwell, SC 29812
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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
    319 Washington St Barnwell, SC 29812
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    We can help!
    Listing Contact
    Rebekah Grubbs
    Real Estate License ID: 119343
    (803) 571-7338
    Learn more
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