Alameda County  »  94587  »  Union Sq  »  1 Union Sq

1 Union Square, Union City, CA 94587 - Property report

Also known as: 34536 Alvarado Niles Rd

Property image for 1 Union Square, Union City, CA 94587
static Mapbox map

Property type

Shopping Center-Neighborhood/Grocery Anchor (3700)

Year built

1990

Acreage

16.56

Sale price

$537,000

General Information

Address
Primary address
1 Union Sq
Union City, CA 94587
Alternate address(es)
1604 Decoto Rd
1640 Decoto Rd
1644 Decoto Rd
Show all
Zip code
94587
County
Alameda
Parcel ID
87-19-16

Owner

Find out who owns 1 Union Square, Union City, CA 94587. Uncover corporate and individual owners with a free account.

Sales
Sale date
01/12/2001
Sale price
$537,000
Arm's length
Tax
Tax year
2025-2026
Property tax
$507,639
Building
Property type
Shopping Center-Neighborhood/Grocery Anchor
Building sq. ft.
189,244
Stories
1
Year built
1990
Building material
Exterior walls - noncombustible material
Interior/roof - combustible materials
Floor - concrete/wood frames
Elevator
Lot
Acreage
16.56
Lot sq. ft.
721,354
Zoning & use
Zoning
Qualified opportunity zone

Area overview

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

Ownership information for 1 Union Square, Union City, CA

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

Sales history for 1 Union Square, Union City, CA 94587

Sale date Sale price Buyer name Seller name
01/12/2001 $537,000 XXXXXXXX, XXX X; XXXX XXX XXXXXXXX XXXXXXX XXXX; XXXXXXXX, XXX X
01/12/2001 $265,000 XXXXXXXXX, XXXXXXX X XXXXXXXXX, XXXXXXXXXXX X
09/25/1992 $4,000,000 XXXXXXXXX, XXXXXX & XXXXXXX XXX XXX XXXXXXXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
11/14/2025 Lease XXXX XXXXX XXX XXXX XXX XXXX XXXX XXXX
11/14/2025 Subordination (lease) XXXX XXXXX XXX XXXX XXX XXXX XXXX XXXX
05/27/2022 Assignment of rents XXXXX XXXXXX XXXXXXXXXXX X X XXXX XXXX XXXX
05/27/2022 Deed of trust XXXXX XXXXXX XXXXXXXXXXX X X XXXX XXXX XXXX
12/03/2020 Assignment of rents XXXXX XXXXXX XXXXXXXXXXX X X XXXX XXXX XXXX
12/03/2020 Deed of trust XXXXX XXXXXX XXXXXXXXXXX X X XXXX XXXX XXXX
01/12/2001 Deed XXXXXXXXX XXXXX XXXX XXXXX
01/12/2001 Deed XXXXXXXXX, XXXXXXXXXXX X XXXXXXXXX, XXXXXXX X
01/12/2001 Deed XXXXXXXX, XXX X XXXX XXX
01/12/2001 Deed XXXXXXXX XXXXXXX XXXX XXXXXXXX, XXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 1 Union Square, 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
Property tax
$507,639
Recent tax assessments
Market value
$40,221,763
Land value
$14,129,511
Building value
$26,092,252

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 $40,221,763 1.2621 $507,639 +4.15%
2024-2025 $39,433,200 1.236 $487,394 -21.54%
2023-2024 $38,660,121 1.6069 $621,229 +31.95%
2022-2023 $37,902,257 1.2422 $470,822 +2.25%
2021-2022 $37,159,076 1.2392 $460,475 +2.86%
2020-2021 $36,778,141 1.2172 $447,664 -1.32%
2019-2020 $36,057,116 1.2581 $453,635 +2.24%
2018-2019 $35,350,241 1.2551 $443,681 +2.37%
2017-2018 $34,657,245 1.2505 $433,389 +19.27%
2016-2017 $33,977,864 1.0694 $363,359 -11.44%
Permits

Permit information for 1 Union Square, Union City, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
12/02/2025
11/04/2025
10/09/2025
09/22/2025
09/19/2025

*Most recent permits 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.

Demographics by ZIP code

Total population
67,464
Median age
43
Average household income
$177,461
Family households
77.9%
People per household (average)
3.13
Occupied housing units
21,240
Owner-occupied units
64.7%
Median year structure built
1980
Median value mortgaged units
$1,168,000
Median value unmortgaged units
$939,700

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
0.2, 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 1 Union Square, 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.

Neighbors for 1 Union Square, Union City, CA

34015 7th St, Union City 34343 Zwissig Way, Union City 1879 Slate Dr, Union City 34893 Herringbone Way, Union City 34135 7th St, Union City 1883 Slate Dr, Union City 34704 Alvarado Niles Rd, Union City 14 Union Sq, Union City 1885 Slate Dr, Union City 34873 Travertine Way, Union City 34889 Herringbone Way, Union City 701 Bradford Way, Union City 34400 Zwissig Way, Union City 1881 Slate Dr, Union City 34501 7th St, Union City 34871 Travertine Way, Union City 27 Union Sq, Union City 1900 Decoto Rd, Union City 1887 Slate Dr, Union City

Nearby ZIP codes for 1 Union Square, Union City, CA

94303, Santa Clara County, CA 94542, Alameda County, CA 94555, Alameda County, CA 94560, Alameda County, CA 94579, Alameda County, CA 95002, Santa Clara County, CA

Frequently asked questions

What is the year built for 1 Union Square, Union City, CA 94587?

The development at 1 Union Square, Union City, CA 94587 was built in 1990.

What is the market value of 1 Union Square, Union City, CA 94587?

The current market value of 1 Union Square, Union City, CA 94587 is $40,221,763.

What is the total square footage of 1 Union Square, Union City, CA 94587?

1 Union Square, Union City, CA 94587 has a total of 189,244 square feet.

What is the price per square foot for this property?

$2 per square foot is the price for 1 Union Square, Union City, CA 94587.

How many active listings does 1 Union Square, Union City, CA 94587 have?

This address has 1 active listing(s).

Disclaimer

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