327 W 20th St, Antioch, CA 94509, USA

Property CA
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1

Property Overview:

327 W 20th St is a single-family home in Antioch, CA, built in 1937. It features 3 bedrooms, 1 bathroom, and approximately 1,050–1,200 sq. ft. of living space. The home sits on a spacious 9,000 sq. ft. lot (about 0.34 acres) with no backyard neighbors. Located in Contra Costa County within the 94509 ZIP Code.

Neighborhood Highlights:

  • School District:
    Served by the Antioch Unified School District.

  • Location:

    • Quiet residential area with ample off-street parking.
    • No backyard neighbors for added privacy.

  • Community:

    • Family-friendly environment.
    • Close to local amenities and services.

Property Features:

  • Remodeled interior with modern finishes.
  • Spacious kitchen:
    • Oak cabinets
    • Granite countertops
    • Lots of windows for natural light
    • Energy-efficient dual pane vinyl windows
  • Flooring:
    • Laminate wood floors in living room, hallway, and all bedrooms
    • Tile floors in kitchen, bathroom, and laundry room
  • Comfort:
    • Ceiling fans in all living areas
    • Heavily insulated for energy savings on utility bills
  • Parking:
    • Detached garage
    • Ample off-street parking
  • Laundry:
    • Inside laundry room

Special Opportunity:

  • Dual Income Potential:
    • Rare duet offering: Two homes on one lot
    • Main home: 3 bedrooms
    • Second unit: 1 bedroom (ideal for rental income or mother-in-law suite)
    • Excellent rental income potential

Location Benefits:

  • Convenient access to local schools, shopping, and major roads.
  • Spacious lot provides privacy and room for outdoor activities.
  • Great for families or investors seeking dual income opportunities.
2

Price and Status History

date type price
2005-03-07 Sold 455000
2010-05-27 Sold 144000
2011-01-10 For Sale NaN
2011-01-28 Pending NaN
2011-02-23 Sold 109500
2017-01-01 Rental 2123
2017-12-28 Off Market 483000
2018-01-01 Rental 2195
2019-12-11 Sold 430000
2019-12-17 Sold 400000
2019-12-20 Sold 437000
2019-12-23 Sold 412500
2019-12-24 Sold 469000
2019-12-26 Sold 475000
2019-12-31 Sold 497000
2023-05-21 Rental 2450
2023-06-10 Rental 2795
2023-07-01 Price Estimation 250860
2023-12-26 Rental 2435
2024-08-22 Off Market NaN
2025-04-23 For Sale 650000
3

Superfund Enterprise Management System

SITE NAME ADDRESS FEDERAL FACILITY NPL STATUS NON-NPL STATUS CONTAMINANTS SEMS EPA ID DISTANCE (MILES)
MANZANITA WAY MERCURY 2209 Manzanita Way, Antioch, CA 94509-3257, USA N N RO 0 CAN000903874 0.68
ABANDONED DRUM/ANTIOCH Antioch, CA 94509, USA N N RO 0 CAD981621956 0.74

Toxic Release Inventory

FACILITY NAME ADDRESS TOTAL FORMS LAST FORM YEAR RISK SCREENING FACILITY ID DISTANCE (MILES)
CEMEX ANTIOCH 6124 AVONDALE RD, Antioch, CA 94509, USA 2 2005 N/A 94509CMXNT6124A 0.74

Integrated Compliance Information System - Air

No data found within 1.0 miles for this property.

4

Flood Risk Info

fld_zone very high impact: up to 0.0001 miles high impact: up to 0.2 miles moderate impact: up to 0.5 miles low-moderate impact: up to 1.5 miles
A 0 0 0 0
AE 0 0 0 40
AH 0 0 0 0
AO 0 0 0 0
VE 0 0 0 0

Flood Zone Type

code meaning
A 1% annual chance flood zone determined using approximate methods. No BFEs shown. Flood insurance and management standards apply.
AE 1% annual chance flood zone determined by detailed methods. BFEs shown. Insurance and floodplain management required.
AH Shallow flooding (ponding) zones with depths between 1-3 feet. BFEs shown. Insurance and management required.
AO Shallow flooding (sheet flow) zones with depths 1-3 feet. BFEs or average depths shown. High-velocity areas may exist.
VE Coastal 1% annual chance flood zone with wave action. BFEs shown. Insurance and management required.

Earthquake Risk Info

zone_name quad_name very high impact: up to 0.0001 miles high impact: up to 2.0 miles moderate impact: up to 10.0 miles
N/A N/A 0 0 0

Landslide Risk Info

lscat very high impact: up to 0.0001 miles high impact: up to 0.04 miles moderate impact: up to 0.1 miles low-moderate impact: up to 0.2 miles
8 0 0 0 0

Liquefaction Risk Info

Suscept very high impact: up to 0.0001 miles high impact: up to 0.05 miles moderate impact: up to 0.5 miles low-moderate impact: up to 1.0 miles
High 0 0 0 0
Very high 0 0 0 2

Wild fire Risk Info

haz_class very high impact: up to 0.0001 miles high impact: up to 0.5 miles moderate impact: up to 1.5 miles low-moderate impact: up to 3.0 miles
High 0 0 0 0
Very High 0 0 0 0
5

Traffic Noise by Hour x Weekday

Not enough data points

6

Airplane Noise by Hour x Weekday

hour_of_day Monday Tuesday Wednesday Thursday Friday Saturday Sunday
0 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
2 1 1 1 1 1 2 1
3 1 1 1 1 1 5 1
4 0 1 1 1 1 1 1
5 2 1 1 1 1 1 1
6 1 2 2 1 1 1 1
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8 1 2 2 1 1 1 1
9 2 1 2 3 2 2 1
10 3 2 2 2 2 2 2
11 2 4 3 3 3 3 2
12 2 2 2 3 2 2 2
13 2 3 3 2 2 2 2
14 2 3 3 3 3 2 3
15 2 3 2 2 2 1 1
16 1 2 2 2 1 1 2
17 2 2 1 2 2 1 2
18 1 1 1 1 2 1 1
19 1 2 2 2 2 1 1
20 1 2 1 1 1 1 1
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