| Primary address | 4109 18th Street, San Francisco |
| Zip code | 94114 |
| County | San Francisco |
| Neighborhood | Eureka Valley - Dolores Heights |
| Parcel ID | 2695-001 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Property tax | $9,426 |
| Building sqft | 9,436 |
| Building class | Office (O) |
| Acreage | 0.129 |
| Rooms | 28 |
| Units | 6 |
| Year built | 1918 |
| Stories | 2 |
| Zoning district | Register |
| School district | San Francisco Unified School District |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
This Office (O) located at 4109 18th Street, San Francisco, CA 94114 has a total of 9,436 square feet.
What is the year built & the current market value of 4109 18th Street, San Francisco, CA 94114?4109 18th Street, San Francisco, CA 94114 was built in 1918 and has a current tax assessor's market value of $797,000.
How many commercial spaces does this building have?This building has 6 commercial spaces available for lease. There are 1 active listings at this address.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
| Listing type | For Lease |
|---|---|
| Listing date | 06/16/2025 |
| Last updated | 05/18/2026 |
The Castro is one of the first major openly gay neighborhoods in the United States and a defining center of LGBTQ+ history and activism. Originally a working-class district known as Eureka Valley, the neighborhood transformed in the 1960s and 1970s as thousands of gay men and women settled here, opening bars, shops, and gathering spaces that made queer life visible and normalized. It was here that Harvey Milk rose from local business owner to one of the nation’s first openly gay elected officials, and where moments of both celebration and protest helped shape the modern LGBTQ+ rights movement. Landmarks such as Harvey Milk Plaza and the Castro Theatre stand as enduring symbols of that legacy, anchoring the neighborhood’s global cultural significance. Today, the Castro continues to evolve while maintaining its identity as a vibrant, community-driven district. A mix of legacy businesses, new restaurants and gathering spaces, and a steady calendar of events - from the Castro Night Market to film festivals and art walks - keep the neighborhood active and engaged. Following an extensive renovation, the highly anticipated reopening of the Castro Theater has further cemented the area as a cultural and entertainment anchor, drawing renewed attention and activity. Alongside ongoing investment in public spaces like Harvey Milk Plaza, the neighborhood continues to strengthen its role as both a cultural destination and a dynamic commercial corridor.Compass Commercial is pleased to present 500 Castro Street for lease—a 3,500 square foot, ground floor commercial space prominently located at the intersection of 18th and Castro St - the heart of San Francisco’s iconic Castro District. Formerly home to the renowned Harvey’s bar and restaurant, this space has been fully renovated to feature an expanded layout, increased ceiling height, abundant natural light, ADA-compliant restrooms, and substantial high-profile street frontage. The property is fully entitled for bar, restaurant, and nighttime entertainment use, with operating approval to 2:00 a.m. and a legal capacity of up to 250 occupants. Delivered as a cold shell, the space will offer maximum flexibility for tenant buildout. A private upstairs office is also available as part of the offering.
| Suite name | Space type | Lease rate | Available space | Brokers |
|---|---|---|---|---|
| 500-504 Castro Street | Retail | Listing price not available | 3,500 | Steven Gerry |
Create a free account to view the complete sales history for 4109 18th Street, San Francisco, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 4109 18th Street, San Francisco, CA 94114. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax | $9,426 |
| Market value | $797,000 |
Here's the assessment & property tax history for 4109 18th Street, San Francisco, including the evolution of the total tax rate and corresponding property tax.
| Year | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|
| 2025-2026 | $797,000 | 1.1827 | $9,426 | +2.98% |
| 2024-2025 | $781,374 | 1.1714 | $9,153 | +1.45% |
| 2023-2024 | $766,054 | 1.1777 | $9,022 | +1.83% |
| 2022-2023 | $751,034 | 1.1797 | $8,860 | +1.76% |
| 2021-2022 | $736,309 | 1.18248 | $8,707 | -0.30% |
Access a detailed real estate market overview of San Francisco so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in San Francisco and compare it to other neighborhoods in San Francisco County.
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| Total population | 33,020 |
| Median age | 41.9 |
| Average household income | $283,394 |
| Family households | 37.1% |
| Occupied housing units | 16,856 |
| Owner occupied units | 45.2% |
| Average number of people per household | 1.96 |
| Median year structure built | 1938 |
| Median value for units with a mortgage | $1,748,900 |
| Median value for units without a mortgage | $1,711,900 |
Create a free account to unlock extended information for 4109 18th Street, San Francisco, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
| Fire hazard zone | See more on map |
| Faults and tsunami inundation zone map | Register |
| Landslides and liquefaction map | Register |
| Crime incidents map | Register |
Access the detailed traffic volume map for 4109 18th Street, San Francisco to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
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Here are the neighbors for 4109 18th Street, San Francisco.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 4241 18th St, San Francisco | 2,450 | 04/24/2002 | |
| 4244 19th St, San Francisco | |||
| 544 Castro St, San Francisco | 4,484 | 09/07/1999 | |
| 548 Castro St, San Francisco | 6,080 | 06/15/2018 | |
| 556 Castro St, San Francisco | 2,466 | 12/30/2013 | $1,995,469 |
| 115 Diamond St, San Francisco | 11/30/2009 | ||
| 4300 19th St, San Francisco | 1,349 | 10/18/2024 | $1,975,000 |
| 534 Castro St, San Francisco | |||
| 514 Castro St, San Francisco | 10,423 | 05/23/2025 | $5,200,000 |
| 524 Castro St, San Francisco | 3,594 | 09/14/2010 | |
| 558 Castro St, San Francisco | 11/15/2021 | ||
| 4227 18th St, San Francisco | 2,130 | 03/09/2022 | |
| 530 Castro St, San Francisco | 2,972 | 08/28/2020 | |
| 538 Castro St, San Francisco | 08/02/2018 | ||
| 566 Castro St, San Francisco | 2,220 | 04/05/2019 | $2,460,000 |
| 4231 18th St, San Francisco | 2,900 | 09/08/2008 | |
| 4253 18th St, San Francisco | 4,284 | 06/15/2009 | |
| 117 Diamond St, San Francisco | 11/30/2009 | ||
| 4249 18th St, San Francisco | 1,957 | 06/02/2015 | |
| 4201 18th St, San Francisco | 2,764 | 01/28/2021 |