4271 Comet Cir, Union City, CA 94587
Property image
Property image
OFF MARKET

$754,500

Trulia Estimate
  • 4 Beds
  • 1.5 Baths
  • 1,342 sqft

4271 Comet Cir, Union City, CA 94587

Est. Refi. Payment $4,721/mo*
Refinance Your Home
Currently Off Market - Sold Dec 11, 2019 for $617,500

Home Value

Trulia Estimate
$755K
Since last month
Increased$10K (+1.4%)
Since last year
Decreased$29K (-3.7%)
Since last sale
Increased$137K (+22.2%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +59% in the last 10 years
MonthEstimated value
2026
August 2026$755K
August 2026$753K
July 2026$744K
June 2026$765K
May 2026$775K
April 2026$785K
March 2026$809K
February 2026$798K
January 2026$770K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
4210 Comet Cir, Union City, CA
0.06
Townhouse
$765,000
10/07/25
4
1.5
1,342
32238 Mercury Way, Union City, CA
0.23
Townhouse
$615,000
07/09/26
4
2
1,342
4243 Comet Cir, Union City, CA
0.03
Townhouse
$759,000
03/20/26
3
1.5
1,255
4246 Solar Cir, Union City, CA
0.13
Townhouse
$730,000
09/02/26
3
2
1,280
4221 Solar Cir, Union City, CA
0.13
Townhouse
$711,900
09/11/25
3
1.5
1,214
4119 Polaris Ave, Union City, CA
0.15
Townhouse
$740,000
02/24/26
3
2
1,280
4290 Solar Cir, Union City, CA
0.09
Townhouse
$740,000
02/17/26
3
2
1,214
4100 Aquarius Cir, Union City, CA
0.19
Townhouse
$650,000
12/18/25
3
2
1,162
4388 Planet Cir, Union City, CA
0.23
Townhouse
$740,000
06/02/26
3
2
1,255
4307 Agena Cir, Union City, CA
0.20
Townhouse
$932,000
03/17/26
4
3
1,583

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
Address Not Disclosed, Union City, CA 94587
0.04
$670,500
3
1
1,137
Off Market
4200 Comet Cir, Union City, CA 94587
0.05
$718,600
3
2
1,137
Off Market
Address Not Disclosed, Union City, CA 94587
0.03
$648,300
3
1
1,255
Off Market
4243 Comet Cir, Union City, CA 94587
0.03
$759,000
3
1.5
1,255
Recently Sold
4202 Comet Cir #4202, Union City, CA 94587
0.05
$779,500
3
1
1,342
Off Market
Address Not Disclosed, Union City, CA 94587
0.02
$858,000
4
2
1,583
Off Market
4272 Comet Cir #4272, Union City, CA 94587
0.02
$872,800
4
2
1,583
Off Market
Address Not Disclosed, Union City, CA 94587
0.04
$885,000
4
2
1,583
Off Market
4206 Comet Cir #4206, Union City, CA 94587
0.06
$492,600
2
1
856
Off Market
4210 Comet Cir, Union City, CA 94587
0.06
$760,900
4
1.5
1,342
Off Market
4266 N Comet Cir #4266, Union City, CA 94587
0.03
$772,500
3
1
1,137
Off Market
Address Not Disclosed, Union City, CA 94587
0.05
$580,100
2
1
856
Off Market

Local Information

  • Map ViewExplore the area around 4271 Comet Cir.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Townhouse
Built in 1972
1,342 sqft
$562/sqft
Garage

About this House

About 15 mins away from Facebook, close to Tesla, Bart. Easy access to 880 Freeway, schools, shopping, dining. STUNNING ALMOST BRAND NEW 4bedrooms 1.5 Bath 2 Car attached garage, patio, deck at master's bedroom. ALL NEW: laminate floors, upgraded kitchen, Dual pane windows, Carpet 2nd floor & stairs, Bathrooms shower, bath floor tiles , window blinds, custom built dual master sink & cabinet, interior pains, recess lights all throughout, double door from kitchen to patio access, mirrored closet in all 2nd floor, New kitchen appliances. Playground across the unit. NO RENTAL RESTRICTION. OPEN HOUSE Nov 16-17@ 1:30-4:30. Contempo Park across the community entrance with basketball court & big football field.
4271 Comet Cir, Union City, CA 94587 is a 4 bedroom, 2 bathroom, 1,342 sqft townhouse built in 1972. It last sold for $617,500 on Dec 11, 2019. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $754,500, with a rent estimate of $3,345/month.

Home Details for 4271 Comet Cir

Interior Features

Heating & Cooling
Heating: Forced Air, GasHeating Fuel: Forced Air
Interior Details
Number of Rooms: 6
Appliances & Utilities
DishwasherDisposalMicrowave
Windows, Doors, Floors & Walls
Double Paned Windows
Levels, Entrance, & Accessibility
Floors: Tile, Carpet, Laminate

Exterior Features

Exterior Home Features
Roof: CompositionExterior: Shingle Not Wood, WoodPatio
Pool
Pool
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1972Year Updated: 1973
Property Type / Style
Property Type: TownhouseArchitecture: Contemporary

Community

Units in Building: 682

Lot Information

Lot Area: 1472 sqft

Price and Tax history

DateEventPrice
Dec 11, 2019
Source: Bay East AOR #40887659
Sold
$617,500
Nov 13, 2019
Source: Agent Provided
PriceChange
$628,000
Price decreased by 2%
Oct 31, 2019
Source: Agent Provided
Listed For Sale
$638,999
Jun 26, 2009
Source: Bay East AOR #40411226
Sold
$255,000
Jan 9, 2009
Source: N/A
Sold
$189,079

Market trends in Union City

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$1.3M
$51.83KMoM
Sale-to-List Price
101.4%
0.7%MoM
Price per sq ft
$762
$1MoM
Available listings
91
17MoM

Around this home

What Locals Say about Union City

At least 349 Trulia users voted on each feature.

  • 88 % Say there are sidewalks

  • 85 % Say it's dog friendly

  • 76 % Say car is needed

  • 72 % Say parking is easy

  • 70 % Say yards are well-kept

  • 68 % Say streets are well-lit

  • 63 % Say there's holiday spirit

  • 63 % Say it's walkable to grocery stores

  • 62 % Say it's quiet

  • 61 % Say kids play outside

  • 61 % Say they plan to stay for at least 5 years

  • 59 % Say it's walkable to restaurants

  • 50 % Say people would walk alone at night

  • 44 % Say neighbors are friendly

  • 34 % Say there's wildlife

  • 25 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Jason Wolfe
    "I don’t like the dog owners they are a threat to my kids. Please less dogs I don’t like the dog owners they are a threat to my kids. Please less dogs "
    0
    Flag
  • Hema Segaran
    "Commute is great, never had issues . Neighbors are awesome and the people in union city dont bother you as long as you mind your own business "
    0
    Flag
  • Vgarcia55
    "Very Centralized location. 20-30 min to down town Oakland. 20-30 minutes to San Jose. Bart to Oakland is 20-30 minutes. Bart to SF 40-45. "
    0
    Flag
  • Trulia User
    "I like the area and the proximity to all the shopping and easy access to the various freeways and interstates"
    1
    Flag
  • Trulia User
    "Good schools and many parks in the area, easy access to various malls and shopping areas Costco and "
    1
    Flag
  • Trulia User
    "I work remote and do not have to drive to the office at all so it is not an issue for me. I really don’t have a commute since I work from home. "
    0
    Flag
  • Charlie M.
    "It’s small, it has one highschool, it has the library police station and city hall all in one area close to the highschool. "
    0
    Flag
  • Charlie M.
    "There is a lot of traffic but the ya te building a new fasttrack lane so that should improve things. I also use Bart to go to the city to beat traffic "
    3
    Flag
  • Kristenclinging
    "Far away from all freeways, hassle when going far distance. Heavier traffic on main roads ex. Mission blvd"
    0
    Flag
  • Bnjenkins23
    "Good commute. No stress. Reasonable. Traffic moves at a reasonable pace at all times. In 2 years, I haven’t gotten frustrated."
    1
    Flag
  • Jean A. M.
    "Union City is a nice, quiet, clean, and safe neighborhood to live in. Easy to access major highways like 84, 880, 680, and the 92."
    2
    Flag
  • Information.from.sage
    "I enjoy the trail, walks, stroll, wagon, biking and views of Cayote Hills, fields, farms, water fountains and sunset embued with blue and peach hues. "
    0
    Flag
  • Rajvirgomez
    "people are very friendly and helpful close to the stores and schools are very close and good. it's very safe area no crime. I'm leaving in this area from 6 years "
    1
    Flag
  • Sohel
    "Good to have Summer fair and community park events Kids playgrounds also helps "
    0
    Flag
  • Kristenclinging
    "Schools are over crowded. Only one Highschool in the area 5000+ students. However one of the best districts in the area"
    3
    Flag
  • Joercorrales
    "I am not aware of any community events. Most of the recreational parks and small businesses are what make the area special."
    0
    Flag
  • Jojo510flores
    "its a good area to live seems safe . not much police activity. except the loud noises of young adults scretching there cares know and then"
    0
    Flag
  • Rbdomingo15
    "Safe for kids healthy environment clean sites and park friendly neighborhood quiet and have privacy "
    0
    Flag
  • Myanhdtruong
    "There are a lot of parks nearby. The schools are not that great. There is public transit nearby. A lot of cats in the neighborhood."
    0
    Flag
  • Myanhdtruong
    "A lot of people have dogs here and they walk them around the neighborhood, and take them to nearby parks"
    0
    Flag
  • Hammad K.
    "Dogs are walked and people walked through the streets. Streets are well lit for the most part. Cops do patrol through every so often. "
    0
    Flag
  • Sherry L.
    " We have many families. Schools are amazing. The homes are mostly well maintained by the homeowners. I’ve been here 21 years with my family who are special needs children and we find services to be satisfactory"
    0
    Flag
  • Rickgarcia1979
    "You have to avoid Union City Blvd from 2-5pm. Feels like I’m locked in my own neighborhood. It’s getting worse every year "
    1
    Flag
  • Toddalanspear
    "We have a great farmers market nearby with local fresh fruits and vegetables. Local honey can be found here. Fresh seafood can also be found here. Some items are seasonally. "
    0
    Flag
  • Allen B.
    "Great place. Several schools, easy to get to freeway, both Dumbarton and San Mateo bridges are close. "
    0
    Flag
  • Toddalanspear
    "Lots of dog owners in union city, plenty of parks to take your dog to. Dogs are great companions to go on walks with."
    0
    Flag
  • Dyasmean
    "The community the people and safety. A lot of different cultures, a lot of interesting activities like sports and cultural activities "
    0
    Flag
  • Kafil
    "I have lived here for 20 years, friendly community, not extremely crowded, lot of good places for hiking"
    0
    Flag
  • Kerry H.
    "I’ve lived in my house for 26 years. 18 years ago there were lots of kids playing in the neighborhood but now everyone is grown and gone away. Neighborhood is super quiet and very safe. Lots of original owners."
    1
    Flag
  • Billicferrell
    "I've lived here 10 years. I miss having a home with a yard. The area is expensive, especially for a small apartment."
    0
    Flag
  • Mhylia20
    "my community acts like more of a family and its amazing cause most people dont act this way with others"
    0
    Flag
  • Cornelio R.
    "christmas, july fourth celebration, new year, halloween, football and basketball finals, boxing championship."
    0
    Flag
  • Hailey M.
    "I’ve lived in this neighborhood for 2 years. The neighborhood is very peaceful. The neighbors are friendly."
    1
    Flag
  • Kaylasavage
    "I’ve lived here my whole life, it’s safe cute & everyone knows everybody. Plus a school & Parks all over ! "
    0
    Flag
  • Darren C.
    "My neighborhood is quiet and neighbors look out for each other. There is a park very close by and it’s great to be able to go anytime we want. Traffic is not too bad either so that’s a great plus. It is also close to both San Francisco and San Jose so jobs are easy to come by for people in tech."
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 4271 Comet Cir

  • What is 4271 Comet Cir estimated to be worth?
    Trulia's estimated value for 4271 Comet Cir in Union City, CA is $754,500.
  • What is the price history for 4271 Comet Cir?
    4271 Comet Cir in Union City, CA last sold for $617,500 in December 2019.
  • Is Union City a buyer's or seller's market?
    Union City is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Union City?
    The median sale price in Union City is $1.3M. That is up $51.83K from the prior month.
  • Does 4271 Comet Cir have a pool?
    Yes, 4271 Comet Cir in Union City, CA has a pool.
  • Does 4271 Comet Cir have a garage?
    Yes, 4271 Comet Cir in Union City, CA has a garage.

Explore by feature - Pet Friendly

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