Alameda County  »  4146 Polaris Ave

4146 Polaris Avenue, Union City, CA 94587 Property Information

4146 Polaris Avenue, Union City, CA 94587 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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4146 Polaris Avenue, Union City, CA 94587
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Address

Primary address 4146 Polaris Avenue, Union City
Zip code 94587
County Alameda
Parcel ID 483-103-115

Sales & Tax Overview for 4146 Polaris Avenue, Union City

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Sale date 08/17/2018
Sale price $630,000
Arm's length
Property tax $8,978

Lot & Building Information for 4146 Polaris Avenue, Union City

Building sqft 1,280
Building class Townhouse - Planned Development (1500)
Acreage 0.04
Units 1
Year built 1974
Stories 2
Bedrooms 3
Bathrooms 2
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district Muliti-Family Residential (RM 2500)
School district New Haven SCH

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 4146 Polaris Avenue, Union City

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  • • Improvements for 4146 Polaris Avenue, Union City , including their type, square footage, grade and when they were built.
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About 4146 Polaris Avenue, Union City

What is the year built & the total sq. ft. for 4146 Polaris Avenue, Union City, CA 94587?

4146 Polaris Avenue, Union City, CA 94587 was built in 1974 and has a total of 1,280 square feet.

What is the assessed value of 4146 Polaris Avenue, Union City, CA 94587 and the property tax paid?

Assessed at $711,353, the tax amount paid for 4146 Polaris Avenue, Union City, CA 94587 is $8,977.

When was 4146 Polaris Avenue, Union City, CA 94587 last sold and what was the last sale price?

4146 Polaris Avenue, Union City, CA 94587 was last sold in 08/17/2018 for $630,000.

Ownership Information

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Real Estate Reports:
Laura Pop-Badiu, May 21, 2026 How to Find Land Boundaries: Free & Paid Methods
If you need to find land boundaries fast, you can start with a free county parcel/GIS viewer or a premium platform like PropertyShark to see an approximate parcel outline and lot data. However, keep in mind that a web-based land boundaries map is a starting point, not the legal finish line.
Laura Pop-Badiu, May 07, 2026 Locked-In Owners, Mobile Renters: Homeowners Stay Put as Renters Move 3.7x More Across Largest U.S. Cities 
Renters became the primary drivers of long-distance mobility across the largest U.S. cities, moving 3.7 times more than owners in 2024, as high mortgage rates and housing costs kept many homeowners in place.
Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.
Research 100M+ property records powered by:
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Past Sales & Property History for 4146 Polaris Avenue, Union City

Create a free account to view the complete sales history for 4146 Polaris Avenue, Union City, including title documents, transfer conditions, mortgages and liens.

Purchase date Purchase price Buyer name Seller name
08/17/2018 $630,000
10/23/2012 $280,000
       
       
       
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Title Documents for 4146 Polaris Avenue, Union City

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.

Date Type Amount Party 1 Party 2 Maturity Document Doc image
07/17/2019 Reconveyance
Substitution of Trustee
07/02/2019 Deed of Trust 08/01/2049
08/17/2018 Deed of Trust 09/01/2048
08/17/2018 Grant Deed
08/17/2018 Power of Attorney
12/28/2012 Quitclaim Deed
10/23/2012 Grant Deed
10/23/2012 Appointment of Trustee
09/15/2004 Deed
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R: Recorded date
D: Document date

Property Taxes for 4146 Polaris Avenue, Union City

Access detailed property tax data for 4146 Polaris Avenue, Union City, CA 94587. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax $8,978
Market value $711,353

Assessment History for 4146 Polaris Avenue, Union City

Here's the assessment & property tax history for 4146 Polaris Avenue, Union City, 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 $711,353 1.2621 $8,978 +4.15%
2024-2025 $697,407 1.236 $8,620 -21.54%
2023-2024 $683,734 1.6069 $10,987 +31.95%
2022-2023 $670,330 1.2422 $8,327 +2.25%
2021-2022 $657,187 1.2392 $8,144 +2.86%

Permits for 4146 Polaris Avenue, Union City

The complete history of permits filed for 4146 Polaris Avenue, Union City, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Issued Permit Type Status
10/08/2018
       
       
       
       
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Union City residential market stats

Median Sale Price
$1,284,000
-7% YoY
Median Price/Sqft
$759
-7.8% YoY
Alameda County Median Sale Price
$965,000
-7.1% YoY

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 County.

Check out recently sold homes in Union-City and see how their prices compare.

Risk

Create a free account to unlock extended information for 4146 Polaris Avenue, Union City, 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
Landslides and liquefaction map

Transportation

Access the detailed traffic volume map for 4146 Polaris Avenue, Union City to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

View daily traffic map

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance to school (mi)
Peace Terrace Academy NR Private PK-8 178 0.58
Peace Terrace Academy NR Private PK-8 178 0.58
Alvarado Elementary School 4 Public K-5 660 0.91
Pioneer Elementary School 5 Public K-5 628 0.94
Ardenwood Elementary School 8 Public TK-5 778 1.02

Nearest middle schools

Name Rating Type Grade range No of students Distance to school (mi)
Peace Terrace Academy NR Private PK-8 178 0.58
Itliong-Vera Cruz Middle School 6 Public 6-8 1,102 0.88
Cesar Chavez Middle School 4 Public 6-8 1,012 0.97
Union City Christian School NR Private K-12 71 1.68
New Haven Adult NR Public 0 2.07

Nearest high schools

Name Rating Type Grade range No of students Distance to school (mi)
Union City Christian School NR Private K-12 71 1.68
New Haven Adult NR Public 0 2.07
James Logan high school 7 Public 9-12 3,315 2.07
Purple Lotus Buddhist School NR Private K-12 25 2.49
Connecting Waters Charter - East Bay 7 Charter K-12 494 2.50

Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 4146 Polaris Avenue, Union City

Here are the neighbors for 4146 Polaris Avenue, Union City.

Address Square feet Purchase date Purchase price
32565 Regents Blvd, Union City 1,389 08/06/2015
4440 Pinewood CT, Union City 1,880 10/15/2012
4414 Chippendale CT, Union City 1,389 10/24/2025
4426 Chippendale CT, Union City 1,389 02/17/2010 $481,000
4441 Delores Dr, Union City 1,880 03/04/2003
32557 Regents Blvd, Union City 1,274 09/08/2014
4427 Pinewood CT, Union City 1,389 10/13/2020
4432 Chippendale CT, Union City 1,880 02/15/2013
32573 Regents Blvd, Union City 1,880 08/12/2025
4420 Chippendale CT, Union City 1,274 11/12/2020
32533 Regents Blvd, Union City 1,274 02/13/2026 $1,300,000
4262 Solar Cir, Union City 1,390 05/28/2015
4234 Solar Cir, Union City 1,214 11/19/2021 $365,254
4435 Delores Dr, Union City 1,389 04/21/2006 $650,000
4446 Pinewood CT, Union City 1,389 08/11/2020
4240 Solar Cir, Union City 1,584 03/16/2018
4453 Delores Dr, Union City 1,880 07/06/2023
4434 Pinewood CT, Union City 1,274 09/10/1991 $185,000
4421 Pinewood CT, Union City 1,274 09/28/2000 $49,500
4413 Chippendale CT, Union City 1,389 03/20/2013

Nearby ZIP Codes for 4146 Polaris Avenue, Union City

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