Alameda County  »  94587  »  Comet Cir  »  4227 Comet Cir

4227 Comet Circle, Union City, CA 94587 - Property report

Also known as: 4227 Comet Cir

Property image for 4227 Comet Circle, Union City, CA 94587
static Mapbox map

Property type

Townhouse - Planned Development (1500)

Year built

1972

Acreage

0.03

Sale price

$211,500

General Information

Address
Primary address
4227 Comet Cir
Union City, CA 94587
Zip code
94587
County
Alameda
Parcel ID
483-102-78

Owner

Find out who owns 4227 Comet Circle, Union City, CA 94587. Uncover corporate and individual owners with a free account.

Sales
Sale date
06/08/2010
Sale price
$211,500
Arm's length
Tax
Tax year
2025-2026
Base tax
$3,576
Current property tax
$3,488
Tax per sq. ft.
$3
Building
Property type
Townhouse - Planned Development
Building sq. ft.
1,137
Stories
2
Year built
1972
Building material
Wood/wood and steel frames
Last altered
1973
Rooms
5
Elevator
Bedrooms
3
Bathrooms
2
Lot
Acreage
0.03
Zoning & use
Zoning
Muliti-Family Residential (RM 2500)
Units
1

Area overview

Walk score
71 /100.  Very Walkable
Transit score
0 /100.  Minimal Transit
Bike score
57 /100.  Bikeable
School district
NEW HAVEN SCH
Ownership

Ownership information for 4227 Comet Circle, Union City, CA

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

Sales history for 4227 Comet Circle, Union City, CA 94587

Sale date Sale price Buyer name Seller name
06/08/2010 $211,500 XXXX XX XXXXXXX XX XXXXXXXX XXXXXXX XXXX
12/13/2006 $440,000 XXXXXXX, XXX X XXXXXXXX, XXXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
08/27/2024 Interspousal Grant Deed XXXXX XXXXXXX XXXX XXXXXXXX
01/10/2017 Interspousal Transfer Grant Deed XXXX XXXXXXXX XXXX XXXXXXXX
06/08/2010 Deed XXXXXXXX XXXXXXX XXXX XXXX XX XXXXXXX XX
12/13/2006 Deed XXXXXXXX, XXXX XXXXXXX, XXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 4227 Comet Circle, Union City, CA

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

Current property tax
Tax year
2025-2026
Base tax
$3,576
Current property tax
$3,488
Tax per sq. ft.
$3
Recent tax assessments
Market value
$283,373
Land value
$84,552
Building value
$198,821

More about Alameda 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 $283,373 1.2621 $3,576 +3.59%
2024-2025 $279,321 1.236 $3,452 -21.54%
2023-2024 $273,846 1.6069 $4,400 +31.95%
2022-2023 $268,478 1.2422 $3,335 +2.24%
2021-2022 $263,213 1.2392 $3,262 +2.87%
2020-2021 $260,516 1.2172 $3,171 -1.32%
2019-2020 $255,410 1.2581 $3,213 +2.24%
2018-2019 $250,404 1.2551 $3,143 +2.37%
2017-2018 $245,495 1.2505 $3,070 +3.82%
2016-2017 $240,683 1.2286 $2,957 +1.75%
Permits

Permit information for 4227 Comet Circle, Union City, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
02/03/2014

*Most recent permit on record for this property.

Neighborhood

Union City residential market stats

Access a detailed real estate market overview of Union City so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Union City and compare it to other neighborhoods in Alameda.

Median sale price

$1,111,000

-11.1% Y-o-Y

Median price/sq. ft.

$758

0.4% Y-o-Y

Alameda county median sale price

$955,000

-6.4% Y-o-Y

Check out recently sold homes in Union City 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

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 4227 Comet Circle, Union City, CA 94587 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)
Peace Terrace Academy NR Private PK-8 178 0.70
Peace Terrace Academy NR Private PK-8 178 0.70
Alvarado Elementary School 4 Public K-5 660 0.81
Pioneer Elementary School 5 Public K-5 628 0.91
Ardenwood Elementary School 8 Public TK-5 778 1.12
Ardenwood Elementary School 8 Public TK-5 778 1.12
Tom Kitayama Elementary School 6 Public K-5 615 1.28
Delaine Eastin Elementary School 7 Public K-5 650 1.29
Myndflex Inc NR Private 1-6 48 1.34
Genius Kids Inc NR Private K-6 91 1.44
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Peace Terrace Academy NR Private PK-8 178 0.70
Itliong-Vera Cruz Middle School 6 Public 6-8 1,102 0.77
Cesar Chavez Middle School 4 Public 6-8 1,012 1.07
Union City Christian School NR Private K-12 71 1.80
New Haven Adult NR Public 0 2.19
Spectrum Center-Mission Valley Campus NR Private K-12 0 2.59
Connecting Waters Charter - East Bay 7 Charter K-12 494 2.59
Purple Lotus Buddhist School NR Private K-12 25 2.60
Our Lady Of The Rosary NR Private K-8 129 2.63
Decoto School For Independent Study 4 Public K-12 295 2.72
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Union City Christian School NR Private K-12 71 1.80
New Haven Adult NR Public 0 2.19
James Logan high school 7 Public 9-12 3,315 2.19
Spectrum Center-Mission Valley Campus NR Private K-12 0 2.59
Connecting Waters Charter - East Bay 7 Charter K-12 494 2.59
Purple Lotus Buddhist School NR Private K-12 25 2.60
Decoto School For Independent Study 4 Public K-12 295 2.72
Newark Adult NR Public 0 2.84
Whiteford (June) Special Education Preschool NR Public 50 2.87
Leadership Public Schools - Hayward 7 Charter 9-12 582 2.87

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

Neighbors for 4227 Comet Circle, Union City, CA

4263 Comet Cir, Union City 4262 Comet Cir, Union City 4223 Comet Cir, Union City 4258 Comet Cir, Union City 4271 Comet Cir, Union City 4221 Comet Cir, Union City 4205 Comet Cir, Union City 4291 Comet Cir, Union City 4132 Asimuth Cir, Union City 4289 Comet Cir, Union City 4275 Comet Cir, Union City 4264 Comet Cir, Union City 4241 Comet Cir, Union City 4243 Comet Cir, Union City 4126 Asimuth Cir, Union City 4273 Comet Cir, Union City 4261 Comet Cir, Union City 4260 Comet Cir, Union City 4225 Comet Cir, Union City 4272 Comet Cir, Union City

Nearby ZIP codes for 4227 Comet Circle, Union City, CA

94303, Santa Clara County, CA 94539, Alameda County, CA 94541, Alameda County, CA 94542, Alameda County, CA 94544, Alameda County, CA 94545, Alameda County, CA 94546, Alameda County, CA 94552, Alameda County, CA 94555, Alameda County, CA 94560, Alameda County, CA 94566, Alameda County, CA 94568, Alameda County, CA 94578, Alameda County, CA 94579, Alameda County, CA 94580, Alameda County, CA 94586, Alameda County, CA 95002, Santa Clara County, CA

Frequently asked questions

What is the year built for 4227 Comet Circle, Union City, CA 94587?

The development at 4227 Comet Circle, Union City, CA 94587 was built in 1972.

What is the total square footage of 4227 Comet Circle, Union City, CA 94587?

4227 Comet Circle, Union City, CA 94587 has a total of 1,137 square feet.

When was 4227 Comet Circle, Union City, CA 94587 last sold and what was the sale price?

4227 Comet Circle, Union City, CA 94587 was last sold on 06/08/2010 for $211,500.

What is the assessed value of 4227 Comet Circle, Union City, CA 94587?

4227 Comet Circle, Union City, CA 94587 is currently assessed at $283,373.

What are the property taxes for 4227 Comet Circle, Union City, CA 94587?

The property taxes for 4227 Comet Circle, Union City, CA 94587 total $3,576.

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