4200 Comet Cir, Union City, CA 94587
OFF MARKET

$718,600

Trulia Estimate
  • 3 Beds
  • 2 Baths
  • 1,137 sqft

4200 Comet Cir, Union City, CA 94587

Est. Refi. Payment $4,500/mo*
Refinance Your Home
Currently Off Market - Sold Jan 27, 2025 for $329,500

Home Value

Trulia Estimate
$719K
Since last month
Decreased$6K (-0.8%)
Since last year
Decreased$53K (-6.9%)
Since last sale
Increased$388K (+117.7%)
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 +54% in the last 10 years
MonthEstimated value
2026
August 2026$717K
August 2026$717K
July 2026$723K
June 2026$729K
May 2026$747K
April 2026$761K
March 2026$766K
February 2026$771K
January 2026$731K
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
4243 Comet Cir, Union City, CA
0.06
Townhouse
$759,000
03/20/26
3
1.5
1,255
4290 Solar Cir, Union City, CA
0.06
Townhouse
$740,000
02/17/26
3
2
1,214
4221 Solar Cir, Union City, CA
0.11
Townhouse
$711,900
09/11/25
3
1.5
1,214
4210 Comet Cir, Union City, CA
0.03
Townhouse
$765,000
10/07/25
4
1.5
1,342
4100 Aquarius Cir, Union City, CA
0.24
Townhouse
$650,000
12/18/25
3
2
1,162
4119 Polaris Ave, Union City, CA
0.16
Townhouse
$740,000
02/24/26
3
2
1,280
4388 Planet Cir, Union City, CA
0.23
Townhouse
$740,000
06/02/26
3
2
1,255
4122 Venus Pl, Union City, CA
0.16
Townhouse
$768,000
04/24/26
3
2.5
1,214
4336 Planet Cir, Union City, CA
0.31
Townhouse
$780,000
05/29/26
3
2
1,255

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
0.05
$673,400
3
1
1,137
Off Market
Address Not Disclosed, Union City, CA 94587
0.06
$653,400
3
1
1,255
Off Market
4243 Comet Cir, Union City, CA 94587
0.06
$759,000
3
1.5
1,255
Recently Sold
4202 Comet Cir #4202, Union City, CA 94587
0.00
$782,200
3
1
1,342
Off Market
Address Not Disclosed, Union City, CA 94587
0.06
$860,900
4
2
1,583
Off Market
4272 Comet Cir #4272, Union City, CA 94587
0.06
$877,400
4
2
1,583
Off Market
Address Not Disclosed, Union City, CA 94587
0.05
$885,000
4
2
1,583
Off Market
4206 Comet Cir #4206, Union City, CA 94587
0.02
$490,600
2
1
856
Off Market
4210 Comet Cir, Union City, CA 94587
0.03
$760,900
4
1.5
1,342
Off Market
4266 N Comet Cir #4266, Union City, CA 94587
0.08
$776,700
3
1
1,137
Off Market
Address Not Disclosed, Union City, CA 94587
0.07
$582,400
2
1
856
Off Market

Local Information

  • Map ViewExplore the area around 4200 Comet Cir.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Townhouse
Year Built
1972
Living Area
1,137 sqft
Price/Sqft
$632
Parking
Garage
HOA
$333/Monthly

About this House

Welcome to 4200 Comet Circle! This lovely, charming 3 bedroom/ 2 bath updated end-unit townhome is an entertainer's dream, featuring one of the largest backyards in the association. This home is perfect for indoor/outdoor entertaining, where the maintenance free backyard has access to an updated kitchen and full bathroom. The primary en-suite, alongside 2 other bedrooms are flooded with natural lighting on the top floor. Even though this well maintained home is walking distance to four parks, tennis/ basketball courts, and the community's swimming pool, it is still nestled away to relish in the complex's tranquility. This townhouse is also conveniently across the street from Contempo Park and the HOA's community center. Easy access to the freeways, 880 and the Dumbarton Bridge. Close proximity to schools, shopping, groceries, wonderful restaurants, Silicon Valley companies, and much more! Don't miss out on this opportunity!
4200 Comet Cir, Union City, CA 94587 is a 3 bedroom, 2 bathroom, 1,137 sqft townhouse built in 1972. It last sold for $329,500 on Jan 27, 2025 (54% below the $720,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $718,600, with a rent estimate of $3,036/month.
Last check for updates: about 2 hours ago
Listed by Lyzette Abaya 01984943, (312) 905-3473
Redfin, (877) 973-3346
Bought with: Jonathan Macciola 01854499, MACCIOLA INC, (510) 299-3343
Source: MLSListings Inc, MLS#ML81950781

Home Details for 4200 Comet Cir

Interior Features

Interior Details
Number of Rooms: 4Types of Rooms: Bathroom, Dining Room, Family Room, Kitchen
Beds & Baths
Number of Bedrooms: 3Number of Bathrooms: 2Number of Bathrooms (full): 2
Dimensions and Layout
Living Area: 1137 Square Feet
Appliances & Utilities
Utilities: Natural Gas Available, Public Utilities, Water PublicAppliances: Electric Cooktop, Dishwasher, Exhaust Fan, Disposal, Microwave, Electric Oven, Electric Oven/Range, Refrigerator, Dryer, Washer, Washer/DryerDishwasherDisposalDryerLaundry: InsideMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Central Forced Air,ElectricNo CoolingAir Conditioning: NoneHeating Fuel: Central Forced Air
Fireplace & Spa
Spa: Other, Spa/HotTub
Gas & Electric
Gas: IndividualGasMeters, NaturalGas, PublicUtilities
Windows, Doors, Floors & Walls
Flooring: LaminateCommon Walls: End Unit
Levels, Entrance, & Accessibility
Stories: 2Floors: Laminate

Exterior Features

Exterior Home Features
Roof: ShinglePatio / Porch: Balcony/PatioFencing: Back YardExterior: Back Yard, Barbecue, FencedFoundation: Slab
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2No CarportHas a GarageParking Spaces: 2Parking: Common,Detached,Garage Door Opener,Off Street,On Street,Oversized
Pool
Pool: Cabana Dressing Room, Community, In Ground
Water & Sewer
Sewer: Public Sewer
Farm & Range
Not Allowed to Raise Horses

Property Information

Year Built
Year Built: 1972
Property Type / Style
Property Type: ResidentialProperty Subtype: Townhouse, Residential
Building
Not a New Construction
Property Information
Parcel Number: 4830102023

Price & Status

Price
List Price: $720,000

Active Status

MLS Status: Sold

Location

Direction & Address
City: UnionCity
School Information
Elementary School District: NewHavenUnifiedHigh School District: NewHavenUnifiedWalk Score: 64

Building

Building Area
Building Area: 1137

Community

Units in Building: 682

HOA

HOA Fee Includes: WaterHas an HOAHOA Fee: $333/Monthly

Lot Information

Lot Area: 1656 sqft

Listing Info

Special Conditions: Standard

Offer

Listing Agreement Type: ExclusiveRightToSell

Miscellaneous

Mls Number: ML81950781

Additional Information

HOA Amenities: Barbecue Area, Cabana, Club House, Common Utility Room, Community Pool, Playground

Price and Tax history

DateEventPrice
Jan 27, 2025
Source: N/A
Sold
$329,500
Feb 14, 2024
Source: MLSListings Inc #ML81950781
Sold
$817,000
Jan 20, 2024
Source: MLSListings Inc #ML81950781
Pending
$720,000
Jan 16, 2024
Source: MLSListings Inc #ML81950781
Listed For Sale
$720,000
Aug 25, 2021
Source: MLSListings Inc #ML81854447
Sold
$705,000

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

Based on information from the MLSListings MLS as of 2026-09-02 11:27:09 PDT. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Frequently asked questions about 4200 Comet Cir

  • What is 4200 Comet Cir estimated to be worth?
    Trulia's estimated value for 4200 Comet Cir in Union City, CA is $718,600.
  • What is the price history for 4200 Comet Cir?
    4200 Comet Cir in Union City, CA last sold for $329,500 in January 2025.
  • 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 4200 Comet Cir have a pool?
    Yes, 4200 Comet Cir in Union City, CA has a pool.
  • Does 4200 Comet Cir have laundry facilities?
    Yes, 4200 Comet Cir in Union City, CA has in-unit laundry.

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Off Market Homes Near 4200 Comet Cir

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