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    Commercial Duplex Corner Lot Title is generated by Realmo AI

    4002 Post St, Triangle, VA 22172

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    For Sale
    $450,000

    Four B-1 parcels with a long-standing duplex; options include conversion to office or retail with survey pending.

    Type:Commercial
    Property size:
    24,000 SF
    Price / SF:
    $18/SF
    Added:
    May 27, 2026
    Days on Market:
    8
    Last Refresh:
    Jun 3 at 3:26 am

    Property Features for 4002 Post St

    General Information

    Standard status
    Active
    Size
    24,000 SF
    Property subtype
    Commercial

    Building Details

    Year Built
    1945

    We can help!

    Listing Contact
    CHRISTIAN P KAILA

    Listing agent CHRISTIAN P KAILA License #4001000099

    Listing office EXIT ELITE REALTY

    Listing date May 27, 2026

    Source Corcoran

    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 EXIT ELITE REALTY

    HighLights

    • 4 commercial B‑1 tax parcels totaling approximately 24,000 SF
    • Duplex has been in continuous use for over 50 years
    • Current duplex use is a legal non‑conforming (grandfathered) use
    • Survey is in progress for the property
    • Zoning supports possible conversion to office or retail uses (subject to applicable approvals)
    • Potential redevelopment or multifamily use may require rezone

    Overview

    This offering consists of 4 tax parcels totaling approximately 24,000 SF, all zoned B-1 Commercial. The current use is a duplex that has been in continuous use for more than 50 years and operates as a legal non-conforming use that was grandfathered. The owners are in the process of getting a survey, and continuing the existing use is recommended through an application with the county.

    The property is located at 4002 Post St in Triangle, VA 22172. With its corner lot configuration, the site presents multiple pathways for investors and operators, including potential redevelopment while accounting for the current legal non-conforming status.

    Beyond maintaining the existing duplex use, the owner highlights several realistic alternatives: conversion to an office or retail use, redevelopment of the entire corner lot for commercial use “as is,” or a possible multifamily direction requiring a rezone. For buyers and tenants who value flexibility, this property’s combination of B-1 zoning and an established income-use history offers a foundation for near- and longer-term planning, subject to county review and the pending survey.
    Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Triangle
    County
    Prince William
    State
    Virginia
    Longitude
    -77.3330592
    Latitude
    38.5461162

    Nearby Similar for Sale

    • $280,000
      1,274 SF

      Residential Duplex in Triangle, VA

      Residential duplex with two units in Triangle, Virginia.
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    • $9,875,000
      39,497 SF

      Class A Office Building For Sale

      Class A office building near Quantico Marine Base.
      18354 QUANTICO GATEWAY Dr, Triangle, VA 22172
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    • $9,875,000
      39,497 SF

      Class A Office Building For Sale

      Class A office building near Quantico Marine Base.
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    FAQs

    What type of property is this?
    Duplex - Four B-1 parcels with a long-standing duplex; options include conversion to office or retail with survey pending.
    Where is this duplex located?
    The property is located at 4002 Post St Triangle, VA.
    What is the asking price?
    The asking price for this property is $450,000.
    What are key features of this property?
    This property features: 4 commercial B‑1 tax parcels totaling approximately 24,000 SF; Duplex has been in continuous use for over 50 years; Current duplex use is a legal non‑conforming (grandfathered) use
    (540) 785-2002
    We can help!
    Listing Contact
    CHRISTIAN P KAILA
    Real Estate License ID: 4001000099
    Learn More
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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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