140 23rd Ave, San Mateo, CA 94403, USA

Property CA
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1

Property Overview:

140 23rd Ave is a single-family residence in San Mateo, CA 94403, built in 1939. It features 2 bedrooms, 1.5–2 bathrooms, and 1,510 sq. ft. of living space on a 6,750 sq. ft. lot. The home includes a parking garage and central heating system. The estimated home value is $1,799,000. The property is R2 zoned and last sold for $1,652,000 in August 2020.

Neighborhood Highlights:

  • Crime Rate:

    • Personal crime risk: 6% (lower than state average of 11.8%)
    • Property crime risk: 6.6% (lower than state average of 10.8%)
    • Low overall crime risk; 5 criminal and sex offenders within 1 mile

  • Schools:

    • Nearby schools: Beresford Elementary, Abbott Middle, Aragon High, Borel Middle, Hillsdale High
    • Excellent school ratings
    • Average SAT score: 1076 (higher than state average of 975)

  • Job Market:

    • 67.9% white-collar jobs, 32.1% blue-collar jobs
    • Unemployment rate: 2.5% (lower than state average of 4.7%)

  • Demographics:

    • Community population: 38,894 (7% growth since 2000)
    • 64% families with children
    • Largest age group: 35–44 years (16.07%)
    • Second-largest: 25–34 years (14.94%)

  • Natural Disaster Risk:

    • Very high earthquake risk
    • Very low tornado risk
    • Minimal flood risk

  • Weather:

    • Average temperature: 51.6°F (January), 70.5°F (July)
    • Average rainfall: 20.4 inches/year
    • Average snowfall: 0 inches/year

  • Cost of Living:

    • Median household income: $83,713
    • Average annual spending: $61,232

Property Features:

  • Charming Beresford Manor home with refinished hardwood floors, rich window casings, and classic molding
  • Formal living room with picture window and fireplace
  • Intimate dining room accessed through an archway
  • Updated kitchen: white cabinets, quartz counters, subway tile backsplash, bathed in natural light
  • Breakfast area opens to family room with second fireplace and French doors to large deck and expansive yard—ideal for entertaining
  • Upstairs: 2 bedrooms and updated bath with quartz vanity and tub/shower
  • Downstairs bonus space with full bath—flexible as home office, guestroom, or playroom
  • Traditional, small-community vibe in Beresford Manor
  • Minutes to schools, shops, dining, Beresford Park, Downtown San Mateo, and Hillsdale Shopping Center
  • Easy access to major commuter routes; centrally located between San Francisco and Silicon Valley

Location Benefits:

  • Commuter-friendly: Quick access to major highways and public transportation
  • Family-oriented neighborhood with excellent schools and low crime
  • Vibrant local amenities: Parks, shopping, dining, and community events
  • Desirable R2 zoning for potential future flexibility
2

Price and Status History

date type price
1973-02-01 Off Market 36000
1999-05-02 For Sale 469000
1999-05-08 Sold 519000
1999-06-30 Sold 519000
1999-07-06 Delisted NaN
2017-12-07 Rental 4800
2020-07-17 For Sale 1348000
2020-07-24 Pending NaN
2020-08-21 Sold 1652000
2020-08-22 Delisted NaN
2022-12-15 Pending NaN
2023-09-12 Off Market NaN
2025-02-05 For Sale 1888000
2025-02-14 Pending NaN
2025-02-25 Sold 2095000
3

Superfund Enterprise Management System

No data found within 1.0 miles for this property.

Toxic Release Inventory

No data found within 1.0 miles for this property.

Integrated Compliance Information System - Air

PLANT NAME ADDRESS OPERATING STATUS DISTANCE (MILES)
DELAWARE SHELL AUTO SERVICE 1790 South Delaware Street, San Mateo, CA 94402-2651, USA OPR: Operating 0.66
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 3
AH 0 0 1 1
AO 0 0 0 2
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
San Andreas - Peninsula Montara Mountain 0 0 1
San Andreas - Peninsula San Mateo 0 0 1
San Andreas - Peninsula Woodside 0 0 1

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 1 0

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 1 6
5

Traffic Noise by Hour x Weekday

hour_of_day Monday Tuesday Wednesday Thursday Friday Saturday Sunday
0 NaN 42 NaN 50 50 28 NaN
1 NaN 54 NaN NaN NaN NaN NaN
2 51 39 38 NaN 43 47 NaN
3 45 NaN NaN NaN 43 NaN NaN
4 55 53 NaN 45 43 NaN NaN
5 NaN NaN NaN 49 NaN NaN NaN
6 NaN NaN 49 NaN 38 34 49
7 39 NaN NaN NaN NaN NaN NaN
8 NaN NaN 41 NaN NaN NaN NaN
9 41 NaN NaN 51 NaN NaN NaN
10 NaN NaN 40 NaN NaN NaN NaN
11 NaN NaN NaN NaN 38 NaN 34
12 35 NaN 41 46 42 NaN 39
13 42 NaN NaN NaN NaN NaN NaN
14 37 NaN NaN NaN NaN NaN 50
15 NaN NaN 43 NaN 44 51 NaN
16 45 NaN NaN NaN NaN NaN NaN
17 NaN 47 NaN 46 43 NaN 48
18 50 NaN 53 NaN 48 45 47
19 NaN 53 NaN NaN NaN NaN NaN
20 NaN 46 NaN 46 NaN 43 54
21 NaN NaN NaN NaN NaN 47 NaN
22 NaN NaN 38 NaN NaN NaN NaN
23 44 47 NaN NaN NaN NaN NaN
6

Airplane Noise by Hour x Weekday

hour_of_day Monday Tuesday Wednesday Thursday Friday Saturday Sunday
0 2 2 2 2 2 2 1
1 1 2 2 3 2 2 2
2 2 2 2 2 2 2 1
3 1 1 1 1 1 1 1
4 1 1 1 1 1 1 1
5 1 1 1 1 1 2 1
6 2 2 2 3 2 3 3
7 2 2 1 2 2 2 2
8 2 2 2 3 3 3 2
9 4 5 4 4 5 5 5
10 5 5 8 6 6 7 6
11 6 7 7 6 8 9 8
12 7 4 6 6 7 5 5
13 8 9 8 7 7 9 8
14 5 8 7 7 8 7 7
15 5 5 6 5 7 6 8
16 5 6 6 7 5 6 6
17 4 4 6 5 5 4 4
18 4 3 3 4 4 3 5
19 4 4 5 4 4 3 4
20 3 4 3 4 2 2 3
21 4 2 2 3 3 2 3
22 2 1 1 1 2 2 1
23 2 3 2 2 2 2 3