?
  • Chat with Us
  • Submit Feedback
  • TopHap Academy
  • What's New?
Sign InSign Up Free

© 2025 TopHap. All rights reserved.

Residential > House
Off-Market
Sold Price
$--$--/ft²

21 South Ave
Port Costa, CA 94569

  • 2
    Beds
  • 2
    Baths
  • 1,675
    ft²
    Living Area
  • 7,320
    ft²
    Lot Size
  • -
    Pool
  • 1
    Car
  • 1900
    Year Built
  • -
    DOM
  • 3
    Permits
21 South Ave, Port Costa, CA 94569 is a 2 bed, 2 bath, 1,675 ft² house built in 1900 on a 0.168 acre lot with 3 construction permits. This house is currently off market. The latest TopHap estimate of the house's value is $655,900.

    Property Valuations

    Latest estimates for 21 South Ave based on TopHap automated valuation model (AVM).

    • TopHap Estimate

      $655,900

      $391/ft²

      Updated 6 months ago

      • 21 South Ave is valued at $655,900 by TopHap AVM 6 months ago.

    Permits

    21 South Ave has 3 permit records.

    Permit History
    3
    Permits

    Current Ownership

    Information about the current owner(s).

    • Taxes Billed

      Taxes billed in 2023$7,378.60
      From latest Total Assessed Value1.7%
      Total Assessed Value$434,610
      =
      Land
      Assessed Value      $169,014
      +
      Additions
      Assessed Value      $265,596

      • In 2023, taxes billed for 21 South Ave were $7,378.6, which is 1.70% from latest Total Assessed Value of $434,610.

    Property History

    21 South Ave has undefined property events records (listings, deeds, permits, tax, foreclosure, loan).

    Property Events

    Environment

    Environmental factors around 21 South Ave

    • Hazard Risks

      Earthquake
      365
      Nat'l Avg
      100
      Particulates
      96
      Carb Mono
      94
      Ozone
      89
      Air Pollution
      87
      Lead
      43
      Tornado
      5
      Weather
      3
      Hail
      2
      Hurricane
      0
      Wind
      0

      • 10 hazards (Carbon Monoxide, Earthquake Risk, Hail Index, Tornado Index, Air Pollution Index, Ozone Index, Weather Risk, Lead Index, Particulate Matter, National Average) are above the national average around 21 South Ave.

      Walkability Index

      5 /20

      Car Dependent

      Most Walkable

      20-18

      Very Walkable

      17-15

      Somewhat Walkable

      14-10

      Car Dependent

      9-0

      21 South Ave has a walkability score of 5 out of 20, which means that it is in a car dependent area.

      Temperature

      Seasonal temperature sampled over multiple years

      Winter
      Average

      47 °F

      Low

      39°F

      High

      56°F

      Summer
      Average

      67 °F

      Low

      54°F

      High

      81°F

      In the winter at 21 South Ave, temperatures range from 38.95°F to 55.88°F with an average of 47.42°F. In the summer, the temperature ranges from 53.95°F to 80.95°F with and average of 67.45°F.

    School Information

    Public/private schools serving 21 South Ave

      Public Schools

      John Swett High School
      Grades: 9-12
      2.14  mi
      C+
      Rodeo Hills Elementary
      Grades: KG-5
      4.78  mi
      C-
      Carquinez Middle School
      Grades: 6-8
      2.13  mi
      C-
      * The school rating is based entirely on the test score performance of each school. It is based on a scale of A-F, A being best.

      Nearby public schools serving 21 South Ave have ratings undefined, undefined, and undefined.

    Neighborhood

    This property is located in Port Costa.

    • Region

      • Boundary map of Port Costa.

      Crime Index for 94569

      140

      Above national average
      140

      The crime index in 94569 is 140, which is 1.4 times higher than national average.

    • Seasonal Housing units 94569

      5%

      of housing is for seasonal rent.

      Daytime Population for 94569

      -30%

      of people during work hours.

    Market Trends

    Historical market data near 21 South Ave over selected time period.

    Nearby Properties on South Ave

    USACAContra Costa CountyPort CostaSouth Ave