Alameda County  »  94587  »  Riviera Dr  »  423 Riviera Dr

423 Riviera Drive, Union City, CA 94587 - Property report

Also known as: 423 Riviera Dr

Property image for 423 Riviera Drive, Union City, CA 94587
static Mapbox map

Property type

Single Family Residential Homes Used as Such (1100)

Year built

1967

Acreage

1.24

Sale price

$1,130,000

General Information

Address
Primary address
423 Riviera Dr
Union City, CA 94587
Zip code
94587
County
Alameda
Parcel ID
87-37-98-1

Owner

Find out who owns 423 Riviera Drive, Union City, CA 94587. Uncover corporate and individual owners with a free account.

Sales
Sale date
08/25/2025
Sale price
$1,130,000
Arm's length
Tax
Tax year
2026-2027
Property tax
$14,262
Tax per sq. ft.
$7
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
1,932
Stories
20
Year built
1967
Building material
Wood/wood and steel frames
Rooms
9
Elevator
Bedrooms
5
Bathrooms
20
Lot
Acreage
1.24
Zoning & use
Zoning
Single Family Residential (RS 6000)
Units
1

Area overview

Walk score
37 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
26 /100.  Somewhat Bikeable
School district
NEW HAVEN SCH
Ownership

Ownership information for 423 Riviera Drive, Union City, CA

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

Sales history for 423 Riviera Drive, Union City, CA 94587

Sale date Sale price Buyer name Seller name
08/25/2025 $1,130,000 XXXX XXXXXXXX XXXXX; XXXX XXXXXXXXX; XXXX XXXXX XXXXX XXXXXXX XXXXXX X; XXXXXXX XXXXX X
05/29/1996 $207,500 XXXXXXX, XXXXXX X & XXXXX X XXXXX XXXXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
09/05/2025 Reconveyance XXXXXXX XXXXXX X
09/05/2025 Reconveyance XXXXXXX XXXXXX X
08/25/2025 Deed of trust XXXX XXXXXXXX XXXXX XXX XXXX X X
08/25/2025 Grant Deed XXXXXXX XXXXXX X XXXX XXXXXXXX XXXXX
11/30/2021 Reconveyance XXXXXXX XXXXXX X
11/23/2021 Deed of trust XXXXXXX XXXXXX X XXXXXXX XXXX
11/23/2021 Subordination (deed of trust) XXXXXXX XXXXXX X XXXXXXX XXXX
04/18/2018 Reconveyance XXXXXXX XXXXXX X
04/04/2018 Deed of Trust XXXXXXX XXXXXX X XXXXXXX XXXX
04/05/2013 Deed of Trust XXXXXXX XXXXXX X XXXXXXX XXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 423 Riviera Drive, Union City, CA

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

Current property tax
Tax year
2026-2027
Property tax
$14,262
Tax per sq. ft.
$7
Recent tax assessments
Market value
$1,130,000
Land value
$339,000
Building value
$791,000

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 $344,690 1.2621 $4,350 +4.15%
2024-2025 $337,932 1.236 $4,177 -21.54%
2023-2024 $331,306 1.6069 $5,324 +31.95%
2022-2023 $324,811 1.2422 $4,035 +2.25%
2021-2022 $318,443 1.2392 $3,946 +2.86%
2020-2021 $315,179 1.2172 $3,836 -1.32%
2019-2020 $309,000 1.2581 $3,888 +2.24%
2018-2019 $302,943 1.2551 $3,802 +2.37%
2017-2018 $297,005 1.2505 $3,714 +20.17%
2016-2017 $291,181 1.0614 $3,091 -12.10%
Permits

Permit information for 423 Riviera Drive, Union City, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
04/14/2015

*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 423 Riviera Drive, 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)
Guy Jr. Emanuele Elementary School 5 Public K-5 666 1.03
Purple Lotus Buddhist School NR Private K-12 25 1.35
Niles Elementary School 7 Public TK-5 546 1.49
Niles Elementary School 7 Public TK-5 546 1.49
Connecting Waters Charter - East Bay 7 Charter K-12 494 1.57
New Haven Adult NR Public 0 1.58
Searles Elementary School 5 Public K-5 702 1.58
Our Lady Of The Rosary NR Private K-8 129 1.59
Decoto School For Independent Study 4 Public K-12 295 1.70
Mission Hills Middle School NR Private K-8 459 1.73
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Purple Lotus Buddhist School NR Private K-12 25 1.35
Connecting Waters Charter - East Bay 7 Charter K-12 494 1.57
New Haven Adult NR Public 0 1.58
Our Lady Of The Rosary NR Private K-8 129 1.59
Decoto School For Independent Study 4 Public K-12 295 1.70
Mission Hills Middle School NR Private K-8 459 1.73
Spectrum Center-Mission Valley Campus NR Private K-12 0 1.74
Northstar School NR Private K-8 126 1.77
Centerville Middle School 6 Public 6-8 946 2.65
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Purple Lotus Buddhist School NR Private K-12 25 1.35
Connecting Waters Charter - East Bay 7 Charter K-12 494 1.57
New Haven Adult NR Public 0 1.58
James Logan high school 7 Public 9-12 3,315 1.58
Decoto School For Independent Study 4 Public K-12 295 1.70
Spectrum Center-Mission Valley Campus NR Private K-12 0 1.74
Union City Christian School NR Private K-12 71 1.98
Alternative Learning Academy At Conley-Caraballo High 1 Public 9-12 21 2.12
Core Learning Academy At Conley-Caraballo High 2 Public 9-12 124 2.12
Grossman Academy NR Private 15 2.12

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

Neighbors for 423 Riviera Drive, Union City, CA

613 Appian Way, Union City 607 Appian Way, Union City 370 Appian Way, Union City 379 Riviera Dr, Union City 378 Monaco Ave, Union City 388 Appian Way, Union City 375 Riviera Dr, Union City 376 Florence St, Union City 601 Appian Way, Union City 387 Riviera Dr, Union City 372 Monaco Ave, Union City 419 Riviera Dr, Union City 619 Appian Way, Union City 595 Appian Way, Union City 376 Appian Way, Union City 427 Riviera Dr, Union City 395 Riviera Dr, Union City 383 Riviera Dr, Union City 391 Riviera Dr, Union City 354 Riviera Dr, Union City

Nearby ZIP codes for 423 Riviera Drive, 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 423 Riviera Drive, Union City, CA 94587?

The development at 423 Riviera Drive, Union City, CA 94587 was built in 1967.

What is the total square footage of 423 Riviera Drive, Union City, CA 94587?

423 Riviera Drive, Union City, CA 94587 has a total of 1,932 square feet.

When was 423 Riviera Drive, Union City, CA 94587 last sold and what was the sale price?

423 Riviera Drive, Union City, CA 94587 was last sold on 08/25/2025 for $1,130,000.

What is the assessed value of 423 Riviera Drive, Union City, CA 94587?

423 Riviera Drive, Union City, CA 94587 is currently assessed at $344,690.

What are the property taxes for 423 Riviera Drive, Union City, CA 94587?

The property taxes for 423 Riviera Drive, Union City, CA 94587 total $4,350.

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