21 18th Ave
San Francisco, CA 94121
5 bd 3 ba 4,116 sqft Built 1913 Lot 3,001 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $140,678 | $60,267 | $200,945 | $2,767 |
| 2024 | $140,678 | $60,267 | $200,945 | $2,336 |
| 2023 | $135,216 | $57,928 | $193,144 | $2,303 |
| 2022 | $132,565 | $56,793 | $189,358 | $2,262 |
| 2021 | $129,966 | $55,680 | $185,646 | $2,826 |
| 2020 | $128,634 | $55,110 | $183,744 | $2,858 |
| 2019 | $126,112 | $54,030 | $180,142 | $2,763 |
| 2018 | $123,640 | $52,971 | $176,611 | $2,671 |
| 2017 | $121,216 | $51,933 | $173,149 | $2,339 |
| 2016 | $118,840 | $50,915 | $169,755 | $2,271 |
| 2015 | $117,055 | $50,151 | $167,206 | $2,239 |
| 2014 | $114,763 | $49,169 | $163,932 | $2,181 |
| 2013 | $114,245 | $48,947 | $163,192 | $2,188 |
| 2012 | $112,005 | $47,988 | $159,993 | $2,035 |
| 2010 | $109,809 | $47,048 | $156,857 | $1,968 |
| 2009 | $108,989 | $46,697 | $155,686 | $1,963 |
| 2008 | $107,106 | $45,891 | $152,997 | $1,730 |
| 2007 | $105,006 | $44,992 | $149,998 | $1,663 |
Property facts
Year built
1913
Property type
single_family
Stories
—
Beds
5
Baths
3
Living area
4,116 sqft
Lot size
3,001 sqft
ZIP code
94121
City
San Francisco
Street
18th Ave
Coordinates
37.78656, -122.47801
Comparable properties nearby
Frequently asked questions
When did 21 18th Ave last sell?
No public-record sale is on file for 21 18th Ave.
What is the current tax assessment for 21 18th Ave?
The most recent total assessment for 21 18th Ave (year 2025) is $200,945 with $2,767 in property tax.
When was 21 18th Ave built?
21 18th Ave was built in 1913.
How does 21 18th Ave compare to others on 18th Ave?
We track 8 other properties on 18th Ave. Browse the list under "Other properties on 18th Ave" to compare beds, baths, and sale history.
What are the property facts for 21 18th Ave?
21 18th Ave is a 5 bed, 3 bath, 4,116 sqft, 3,001 sqft lot single_family.
Is 21 18th Ave a flip candidate?
No — 21 18th Ave does not appear in our flips dataset.
Is 21 18th Ave a tax-appeal candidate?
No — 21 18th Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-0.8%
Implied 1-yr
-3.2%
2026 Q3
$2.17M
2026 Q4
$2.15M
ZIP 94121 — Median Price History + Forecast
Explore nearby
Geography
Other properties on 18th Ave