San Francisco County  »  94121  »  18th Ave  »  631 18th Ave

631 18th Avenue, San Francisco, CA 94121 - Property report

Also known as: 631 18th Ave

Property image for 631 18th Avenue, San Francisco, CA 94121
static Mapbox map

Property type

Single Family Residence (31)

Year built

1915

Lot sq. ft.

3,006

Sale price

$2,550,500

General Information

Address
Primary address
631 18th Ave
San Francisco, CA 94121
Zip code
94121
Neighborhood
Central Richmond
County
San Francisco
Municipality
City of San Francisco
Parcel ID
1626-001D

Owner

Find out who owns 631 18th Avenue, San Francisco, CA 94121. Uncover corporate and individual owners with a free account.

Sales
Sale date
03/03/2026
Sale price
$2,550,500
Arm's length
Tax
Tax year
2026-2027
Base tax
$17,656
Current property tax
$17,574
Tax per sq. ft.
$9
Building
Property type
Single Family Residence
Building sq. ft.
2,010
Stories
2
Year built
1915
Rooms
7
Bathrooms
1
Lot
Acreage
0.069
Zoning & use
Zoning
Residential- House, Two Family (RH-2)
Units
1

Area overview

Walk score
90 /100.  Walker's Paradise
Transit score
71 /100.  Excellent Transit
Bike score
87 /100.  Very Bikeable
School district
San Francisco Unified School District
Ownership

Ownership information for 631 18th Avenue, San Francisco, CA

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 631 18th Avenue, San Francisco, CA 94121

Sale date Sale price Buyer name Seller name
03/03/2026 $2,550,500 XXXXXX XXXXXXXX XXX XXX XXXXX; XX XXX
04/28/2005 $1,050,000 XX XXX XXXXX XXXXXX; XXXXX XXXXXXXX; XXXXX XXXXX; XXXXX XXXXXX XXX

*Most recent sales on record for this property.

More about San Francisco County property records.

Title documents

Date Type Amount Party 1 Party 2 Doc #
03/24/2026 Quitclaim Deed Trust Transfer XXXXXX XXXXXXXX XXXXXXXX X XXXXXX XXXXXX XXXXX
03/03/2026 Grant Deed XXX XXX XXXXX XXXXXX XXXXXXXX
03/03/2026 Power Attorney XXX XXX XXXXX XX XXX
01/21/2026 Release of Lien XX XXXXX XXXXX XXX XXXXX XXX XXX XXXXX XXX XX XXX
12/17/2025 NTC Lien XXX XXX XXXXX XXX XX XXX XX XXXXX XXXXX XXX XXXXX
07/29/2021 Release of Lien XX XXXXXXXXXX XX XXXXXX XXXXXX XXX XXX XXXXX XXX XX XXX
07/29/2021 Release of Lien XX XXXXXXXXXX XX XXXXXX XXXXXX XXX XXX XXXXX XXX XX XXX
07/29/2021 Release of Lien XX XXXXXXXXXX XX XXXXXX XXXXXX XXX XXX XXXXX XXX XX XXX
04/22/2021 NTC Lien XXX XXX XXXXX XXX XX XXX XX XXXXXXXXXX XX XXXXXX XXXXXX
12/21/2020 NTC Lien XXX XXX XXXXX XXX XX XXX XX XXXXXXXXXX XX XXXXXX XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 631 18th Avenue, San Francisco, CA

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026-2027
Base tax
$17,656
Current property tax
$17,574
Tax per sq. ft.
$9
Recent tax assessments
Market value
$1,492,890
Land value
$895,734
Building value
$597,156

More about San Francisco County Property Taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $1,463,595 1.1827 $17,310 +2.98%
2024-2025 $1,434,898 1.1714 $16,808 +1.45%
2023-2024 $1,406,763 1.1777 $16,567 +1.83%
2022-2023 $1,379,180 1.1797 $16,270 +1.76%
2021-2022 $1,352,138 1.18248 $15,989 -0.30%
2020-2021 $1,338,275 1.1984 $16,038 +3.58%
2019-2020 $1,312,035 1.1801 $15,483 +3.50%
2018-2019 $1,286,310 1.163 $14,960 +1.19%
2017-2018 $1,261,089 1.1723 $14,784 +1.11%
2016-2017 $1,236,363 1.1826 $14,621 +1.52%
Permits

Permit information for 631 18th Avenue, San Francisco, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
06/18/2026
06/03/2026
03/13/2026
03/13/2026
03/13/2026

*Most recent permits on record for this property.

Neighborhood

San Francisco residential market stats

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.

Median sale price

$1,500,000

15.4% Y-o-Y

Median price/sq. ft.

$1,155

11.2% Y-o-Y

San Francisco county median sale price

$1,500,000

15.4% Y-o-Y

Check out recently sold homes in San Francisco and see how their prices compare.

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X
Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map
Crime incidents map

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 631 18th Avenue, San Francisco, CA 94121 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Argonne Elementary School 6 Public K-5 361 0.07
Lisa Kampner Hebrew Academy NR Private K-12 37 0.24
St. Monica School NR Private K-8 209 0.44
San Francisco Schoolhouse NR Private K-7 60 0.49
Alamo Elementary School 8 Public K-5 410 0.54
St. John Of San Francisco Orthodox Acade NR Private K-12 50 0.57
Bais Menachem Yeshiva Day School NR Private K-8 49 0.57
Sutro Elementary School 9 Public K-5 219 0.60
Mccoppin (Frank) Elementary School 7 Public K-5 215 0.71
Peabody (George) Elementary School 8 Public K-5 269 0.86
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Lisa Kampner Hebrew Academy NR Private K-12 37 0.24
Erikson School NR Private 6-12 7 0.39
St. Monica School NR Private K-8 209 0.44
Challenge To Learning NR Private 7-12 0 0.48
San Francisco Schoolhouse NR Private K-7 60 0.49
Presidio Middle School 7 Public 6-8 978 0.78
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Lisa Kampner Hebrew Academy NR Private K-12 37 0.24
San Francisco County Rop School NR Public 10-12 0 0.36
Erikson School NR Private 6-12 7 0.39
Challenge To Learning NR Private 7-12 0 0.48
St. John Of San Francisco Orthodox Acade NR Private K-12 50 0.57
Olympia Institute NR Private 6-11 8 0.63
Washington (George) High School 9 Public 9-12 2,036 0.78
Independence High School 5 Public 9-12 205 1.14
Wallenberg (Raoul) Traditional High School 7 Public 9-12 549 1.72

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 631 18th Avenue, San Francisco, CA

615 18th Ave, San Francisco 1737 Balboa St, San Francisco 600 20th Ave, San Francisco 608 20th Ave, San Francisco 643 18th Ave, San Francisco 638 19th Ave, San Francisco 625 18th Ave, San Francisco 1701 Balboa St, San Francisco 617 18th Ave, San Francisco 1725 Balboa St, San Francisco 1825 Balboa St, San Francisco 1835 Balboa St, San Francisco 635 18th Ave, San Francisco 1831 Balboa St, San Francisco 639 18th Ave, San Francisco 642 19th Ave, San Francisco 627 18th Ave, San Francisco 621 18th Ave, San Francisco 1729 Balboa St, San Francisco 610 20th Ave, San Francisco

Nearby ZIP codes for 631 18th Avenue, San Francisco, CA

94102, San Francisco County, CA 94103, San Francisco County, CA 94104, San Francisco County, CA 94108, San Francisco County, CA 94109, San Francisco County, CA 94110, San Francisco County, CA 94112, San Francisco County, CA 94114, San Francisco County, CA 94115, San Francisco County, CA 94116, San Francisco County, CA 94118, San Francisco County, CA 94122, San Francisco County, CA 94123, San Francisco County, CA 94127, San Francisco County, CA 94129, San Francisco County, CA 94131, San Francisco County, CA 94133, San Francisco County, CA

Frequently asked questions

What is the year built for 631 18th Avenue, San Francisco, CA 94121?

The development at 631 18th Avenue, San Francisco, CA 94121 was built in 1915.

What is the total square footage of 631 18th Avenue, San Francisco, CA 94121?

631 18th Avenue, San Francisco, CA 94121 has a total of 2,010 square feet.

When was 631 18th Avenue, San Francisco, CA 94121 last sold and what was the sale price?

631 18th Avenue, San Francisco, CA 94121 was last sold on 03/03/2026 for $2,550,500.

What is the assessed value of 631 18th Avenue, San Francisco, CA 94121?

631 18th Avenue, San Francisco, CA 94121 is currently assessed at $1,492,890.

What are the property taxes for 631 18th Avenue, San Francisco, CA 94121?

The property taxes for 631 18th Avenue, San Francisco, CA 94121 total $17,656.

Disclaimer

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Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

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