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    The Largest CRE Database in the US with Over 1 Million Listings
    Property profile & analytics

    31405 18th S Ave Federal Way, WA 98003-5433

    • Medical offices
    • 23,136 SF
    • 2.70 lot acres
    OFF-MARKET
    Value Estimations
    $5,255,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US90-0200747
    The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.

    Current Use by Public Records

    • Medical offices

    Property Details for 31405 18th S Ave

    Year built
    1959
    Construction
    MASONRY/CONCRETE MASONRY UNITS (CMUS)
    Lot size
    2.70 lot acres
    Property size
    23,136 SF
    Zone code
    CC-F
    Property type
    Medical offices
    Property subtype
    Medical centers
    APN
    092104-9233
    APU
    921049233

    Value Estimations

    based on Realmo’s proprietary methodology

    • Alternative Use

      Use
      Estimation
      APARTMENT HOUSE (5+ UNITS)
      $8,020,000
      AUTO REPAIR, GARAGE
      $7,960,000

    Get a detailed, property-specific valuation — fast and free

    Location Insight

    • Map
    • Local Demand
    City
    Federal Way
    County
    King
    State
    Washington
    Longitude
    -122.311
    Latitude
    47.3207
    CBSA code
    42660
    CBSA name
    SEATTLE-TACOMA-BELLEVUE, WA METROPOLITAN STATISTICAL AREA

    Property Tax & Assessments

    Tax date
    Tax Amount
    Assessed Land Value
    Assessed Improvement Value
    Total Assessed Value
    Applied Tax Rate
    Land Market Value
    Improvement Market Value
    Total Market Value
    2022
    $5,883
    $0.00
    $0.00
    $0.00
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation
      $700,000
      3,632 SF

      34730 Pacific S Hwy

      MEDICAL BUILDING • 3,632 SF
      34730 Pacific S Hwy, Federal Way, WA 98003-6821
      View Details
    • Value Estimation
      $790,000
      6,733 SF

      1014 320th St

      MEDICAL BUILDING • 6,733 SF
      1014 320th St, Federal Way, WA 98003-5344
      View Details
    • Value Estimation
      $1,430,000
      8,064 SF

      700 320th St

      MEDICAL BUILDING • 8,064 SF
      700 320th St, Federal Way, WA 98003-4691
      View Details
    • Value Estimation
      $1,285,000
      8,640 SF

      533 336th St

      MEDICAL BUILDING • 8,640 SF
      533 336th St, Federal Way, WA 98003-6329
      View Details
    • Value Estimation
      $835,000
      6,960 SF

      32105 1st S Ave

      MEDICAL BUILDING • 6,960 SF
      32105 1st S Ave, Federal Way, WA 98003-5719
      View Details
    • Value Estimation
      $1,255,000
      6,993 SF

      1300 320th St

      MEDICAL BUILDING • 6,993 SF
      1300 320th St, Federal Way, WA 98003-5359
      View Details

    Similar Nearby for Sale

    • Contact for pricing

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      Federal Way Office Building For Sale

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      8,280 SF

      Federal Way Office Space Available

      Office space near future Link Light Rail Station in Federal Way.
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      74,031 SF

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      Prime office space near future Sound Transit Station.
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    Similar Nearby for Lease

    • $17 SF/Yr
      34,496 SF

      Maplewood Medical Center: Office Suites for Lease

      Prime Federal Way Medical Office Space Available
      33915 1St Way, Federal Way, WA 98003
      View Details
    • $18 SF/Yr
      1,550 SF

      Federal Way Office Space Available

      Medical or professional office space for lease in Federal Way.
      32717 1St Ave S, Federal Way, WA 98003
      View Details
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      12,036 SF

      Federal Way Class A Office

      Class A office/medical building in Federal Way's West Campus.
      33301 9Th Ave S, Federal Way, WA 98003
      View Details
    • $17 SF/Yr
      1,570 SF

      Medical Office Space Available

      Office space near Virginia Mason and St. Francis Hospital.
      33725-33915 1St Way S, Federal Way, WA 98003
      View Details
    • Contact for pricing
      2,477 SF

      Medical Office Space Available

      2,477 SF medical office space for lease.
      34616 11Th Pl S, Federal Way, WA 98003
      View Details
    • $24 SF/Yr
      803 SF

      Federal Way Office Suite Available

      803 SF office suite suitable for medical or general use.
      118 SW 330Th St, Federal Way, WA 98003
      View Details
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    31405 18th S Ave
    Federal Way, WA 98003-5433
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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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