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    441 Mason St San Francisco, CA 94102
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    Property profile & analytics

    441 Mason St, San Francisco, CA 94102

    View on Map
    • Hotels
    • 60,155 SF
    Off-Market
    Last Sale Dec 27, 2024
    $4,000
    Property ID
    US09-6066389
    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.
    Value Estimations
    $6,505,000
    Cap Rate Potential
    Location Intelligence

    Current Use by Public Records

    • Arbor Limo Service / Limousine Service
    • The Club Donatello / Hotel & Motel

    Property Details for 441 Mason St

    Year built
    1970
    Construction
    STEEL FRAME
    Zone code
    C3G
    Property type
    Hotels
    APN
    0306 -026
    APU
    306026

    Sales History

    Date Price Buyer Seller Deed Type Mortgage
    Oct 24, 2025 — Cheryl Ann Tonkin Irrevocable Trust Marv And Rena Tonkin Trust Deed · related —
    Dec 27, 2024 $500 Nancy Yum Estate Of Naomi Heid Quitclaim Deed · related —
    Dec 20, 2024 — Nancy Yum Cecilia I Rossi Quitclaim Deed · related —
    Apr 21, 2020 $500 Club Donatello Owners Assn Macdonald B A & J1990 Trust Grant Deed · related —
    Oct 21, 2019 $500 Club Donatello Owners Assn Rabada Family Trust Grant Deed · related —
    Oct 11, 2018 — Hearn Family Trust City & Cnty Of San Francisco T Quit Claim Deed · related —
    Jul 9, 2018 — Mendoza,cecilia Living Trust Mendoza,cecilia Quit Claim Deed · related —
    Jan 26, 2018 — Tracy L Goulette Goulette,lance H & Tracy L Quit Claim Deed · related —
    Apr 26, 2013 — Brix,kathleen O Trust Obrien Family Trust Quit Claim Deed · related —
    Feb 22, 2012 — Gouveia Family Trust Gouveia,donald L & Jacqueline B Quit Claim Deed · related —
    Aug 16, 2010 — Dughi,timothy J Tr Dughi,mary K Affidavit Of Death · related —
    Feb 5, 2010 — Dughi Living Trust Dughi,james R Affidavit Of Death · related —
    Dec 18, 2009 — Getzoff California LLC Getzoff Ann L Living Trust Quit Claim Deed · related —
    Dec 11, 2009 $2,500 Ching,vicente S T Wood-taylor M Family Trust Grant Deed · related —
    Jan 13, 2009 — Silva Juli A Living Trust Silva,julia A Quit Claim Deed · related —
    Jun 17, 2008 $4,000 Kuefler,nancy J D Trust Estruth,john O JR & June F Grant Deed —
    Jun 11, 2008 — Maille,judith A Maille,alejandro G Quit Claim Deed · related —
    Jun 9, 2008 — Darrah,j P & J Family Trust Darrah J P & J Family Trust Quit Claim Deed · related —
    May 19, 2008 $1,200 Unique Real Estate & Dev LLC Tax Collector Of San Francisco Tax Deed · related —
    Mar 20, 2008 — Simi,ronald M & Linda J Simi Family Trust Quit Claim Deed · related —
    Dec 20, 2007 — Sewell Family Trust Sewell Family Trust Quit Claim Deed · related —
    Oct 18, 2007 — Sibbett,linda S 2000 Trust Sibbett,linda S Quit Claim Deed · related —
    Oct 5, 2007 $5,000 Dunn,john & Janine Thompson J C & B J Trust Grant Deed —
    May 15, 2007 — John Endicott Endicott,birgit C Quit Claim Deed · related —
    Oct 31, 2006 $500 Dorn,michael S & Linda S Evans,john E & Jane E Grant Deed · related —
    Oct 4, 2006 — Alyce D Murphree Murphree,harold C Affidavit Of Death · related —
    Sep 28, 2006 — Mecham,sally Family Trust Mecham,sally K Quit Claim Deed · related —
    Jul 26, 2006 — Enochs J C & J C 2006 Trust Enochs,james C & Carole Quit Claim Deed · related —
    Jun 16, 2006 — Wytock,harry L Wytock,florence I Affidavit Of Death · related —
    May 3, 2006 — Moss,quinzetta Club Donatello Owners Assn Grant Deed · related —
    Apr 3, 2006 — Black William W & H M Trust Black,hedwig M Quit Claim Deed · related —
    Mar 29, 2006 — Bourque Margot 2003 Trust Bourque,margot Quit Claim Deed · related —
    Mar 22, 2006 — Dykstra Family Trust Dykstra,dianne Quit Claim Deed · related —
    Jan 10, 2006 — Resort Prop Specialists INC Gilman Howard & E P Trust Quit Claim Deed · related —
    Aug 1, 2005 — Dykstra,dianne Dykstra,richard A Affidavit Of Death · related —
    Feb 11, 2005 $1,000 White,daniel P & Elizabeth C Segue Corp Quit Claim Deed · related —
    Aug 13, 2004 — Stofer,twila R Stofer,john M Quit Claim Deed · related —
    Jan 3, 2003 $6,500 R Moore Mock,tr Grant Deed —
    Oct 10, 2002 — Shell Owners Association Svc California LP Grant Deed · related —
    Sep 30, 2002 — Shell Owners Association Cal Cantow,manfred J Grant Deed · related —
    Sep 9, 2002 — Owners Assn California Shell Friesen,michael F & Carmen M Grant Deed · related —
    May 31, 2001 — Shell Owners Hotel Group LLC Shell Donatello LP Quit Claim Deed · related —
    Jan 5, 2000 — Shell Owners Club Donatello Hotel Group LLC Grant Deed · related —
    Feb 26, 1999 — Donatello Hotel Group LLC Kli 501 Management INC Grant Deed $14.3M · Peacock Suites Resort LP
    Jun 30, 1994 — Kli 501 Management INC Ristorante Donat Quit Claim Deed · related —
    Jun 9, 1993 — Kli 501 Management Corp Chicago Title Co Trustees Deed · related —
    May 9, 1990 — 501 Post Investo Rossi,c. Grant Deed · related —
    — — 501 Post Investo — Deed Of Trust · related $100k · American Realty
    — — 501 Post Investo — Deed Of Trust · related $360k · American Realty
    — — 501 Post Investo — Deed Of Trust · related $400k · Global Bancorp C
    — — 501 Post Investo — Deed Of Trust · related $14M · Kawasaki Leasing
    — — Rossi A Cal JR. — Deed Of Trust · related $1.1M · Individual

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

    • CAP approach

    • Comparable approach

    • Alternative Use

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

    Location Insight

    • Map
    • Local Demand
    City
    San Francisco
    County
    San Francisco
    State
    California
    Longitude
    -122.41
    Latitude
    37.7878
    CBSA code
    41860
    CBSA name
    SAN FRANCISCO-OAKLAND-FREMONT, CA 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
    2024
    $81,861
    $960,328
    $2,877,612
    $3,837,940
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
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      620 Sutter St

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    • Value Estimation
      $1,585,000
      32,228 SF

      120 Ellis St

      HOTEL
      120 Ellis St, San Francisco, CA 94102-2100
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    • Value Estimation
      $2,140,000
      25,482 SF

      387 Ellis St

      HOTEL
      387 Ellis St, San Francisco, CA 94102-2709
      View Details
    • Value Estimation by Request
      94,854 SF

      550 Geary St

      HOTEL
      550 Geary St, San Francisco, CA 94102-1650
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    • Value Estimation by Request
      97,137 SF

      221-225 Powell St

      HOTEL
      221-225 Powell St, San Francisco, CA 94102
      View Details

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      Union Square Gem Opportunity

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      Downtown San Francisco Hotel Opportunity

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      Hayes Valley Restaurant Opportunity

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      10,500 SF

      Renovated Office Building with Parking

      Recently renovated office building with parking and public transportation access.
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    Similar Nearby for Lease

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      Union Square Plaza Hotel Retail

      Seven-story hotel with ground-floor retail and basement restaurant space.
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      San Francisco Restaurant Space Available

      Restaurant space in San Francisco's Mid-Market corridor for rent.
      986 Market St, San Francisco, CA 94102
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      2,523 SF

      Retail Space in Union Square

      Retail space available for rent in Union Square submarket.
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      2,303 SF

      San Francisco Office Space Available

      Office space for rent in San Francisco with hardwood floors.
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      1,300 SF

      Office Space in San Francisco

      Office space available for lease in San Francisco, CA.
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      Vintage Storefront with Open Layout

      San Francisco storefront with high ceilings and abundant natural light.
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    San Francisco, CA 94102
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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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