1040 Walnut St, San Carlos, CA 94070, USA

Property CA
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1

Property Overview:

1040 Walnut St is a single-family home in San Carlos, CA, built in 1939. It features 2 bedrooms, 1 bathroom, and 1,330 sq. ft. of living space on a large 6,000 sq. ft. corner lot. The home includes a detached two-car garage with potential for ADU conversion. The estimated home value is $1,570,000.

Neighborhood Highlights:

  • Crime Rate:

    • Personal crime risk: 3.3% (lower than state average of 11.8%).
    • Property crime risk: 4.5% (lower than state average of 10.8%).

  • Schools:
    Nearby schools include Arroyo, Central Middle, Redwood High, and San Mateo County Special Education.

    • Average SAT score: 1039 (534 Math, 505 English)—above state average of 975.

  • Job Market:

    • 71.4% white-collar jobs, 28.6% blue-collar jobs.
    • Unemployment rate: 1.8% (lower than state average of 4.7%).

  • Demographics:

    • Community population: 28,104 (13% growth since 2000).
    • 68% families with children.
    • Largest age group: 45-54 years (17.6%), followed by 35-44 years (17.2%).

  • Natural Disaster Risk:

    • Moderate flood risk, low tornado risk, high earthquake risk.

  • Weather:

    • Average temperature: 52.1°F (January), 76.8°F (July).
    • Average rainfall: 20.3 inches/year.
    • Average snowfall: 0 inches/year.

  • Cost of Living:

    • Median household income: $100,859.
    • Average annual spending: $69,772.

Property Features:

  • Charming 2-bedroom, 1-bath home with hardwood floors, fireplace, and large picture windows.
  • Formal dining room opens to a functional eat-in kitchen and versatile space for walk-in pantry or laundry.
  • Spacious backyard and patio—ideal for relaxing or entertaining.
  • Detached two-car garage with built-in storage and ADU potential.
  • Move-in ready and well maintained.
  • Fully approved Phase 1 building plan for a 3-bedroom, 2-bathroom home—ideal for expansion, investment, or redevelopment.
  • Minutes from vibrant downtown San Carlos, award-winning schools, parks, hiking trails, and major commute routes.

Location Benefits:

  • Highly sought-after San Carlos neighborhood with strong community growth.
  • Excellent walkability to restaurants, shops, and amenities.
  • Top-rated schools and family-friendly environment.
  • Great investment opportunity for homeowners or investors—potential for ADU or new construction.
  • Commuter-friendly with easy access to major highways and public transportation.
2

Price and Status History

date type price
2018-01-03 Rental 3800
2019-10-06 For Sale NaN
2022-01-25 Off Market NaN
2023-10-04 For Sale 1598000
2023-10-25 Pending NaN
2023-10-31 Sold 1500000
2023-11-08 Pending 1598000
2023-11-21 Sold 1500000
2024-02-16 For Sale 1698000
2025-02-28 For Sale 2495000
2025-03-08 Pending NaN
2025-03-28 Sold 2548000
3

Superfund Enterprise Management System

SITE NAME ADDRESS FEDERAL FACILITY NPL STATUS NON-NPL STATUS CONTAMINANTS SEMS EPA ID DISTANCE (MILES)
KELLY MOORE PAINT CO 1015 Commercial Street, San Carlos, CA 94070-4007, USA N N NF 0 CAD009125303 0.29
CEDAR STREET RAD SOURCES 1054 Cedar Street, San Carlos, CA 94070-3867, USA N N RO 0 CAN000905619 0.32
PROTO METALS 1565 Old County Road, Belmont, CA 94002, USA N N RO 0 CA0001898576 0.44
PORTER H. K. CO INC. 1777 Industrial Way, San Carlos, CA 94070, USA N N NF 0 CAD981436066 0.90
GTE LENKURT INC 1105 COUNTY ROAD, San Carlos, CA 94070, USA N N DR 0 CAD009118605 0.92
VARIAN ASSOC EIMAC DIV 301 Industrial Way, San Carlos, CA 94070-2603, USA N N NF 0 CAD009438300 0.93

Toxic Release Inventory

FACILITY NAME ADDRESS TOTAL FORMS LAST FORM YEAR RISK SCREENING FACILITY ID DISTANCE (MILES)
QUANTIC IND INC 990 Commercial Street, San Carlos, CA 94070, USA 1 1989 N/A 94070QNTCN990CO 0.39
NXEDGE SAN CARLOS 1000 Commercial Street, San Carlos, CA 94070-4024, USA 35 2023 Yes 94070CTRNC1000C 0.40
CEMEX SAN CARLOS 1026 Bransten Road, San Carlos, CA 94070-4019, USA 22 2023 Yes 94070RMCPC126BR 0.42
PERFORMEX MACHINING CO 1007 Bransten Road E, San Carlos, CA 94070-4015, USA 13 2000 N/A 94070PRFRM1007B 0.43
L-3 COMMUNICATIONS ELECTRON DEVICES DIV 960 Industrial Road, San Carlos, CA 94070-4116, USA 44 2016 Yes 94070LTTNL960IN 0.43
HARBOR READY MIX 941 Bransten Road, San Carlos, CA 94070-4021, USA 5 2021 Yes 9407WHRBRR941BR 0.49
VIVION INC 929 Bransten Road, San Carlos, CA 94070-4021, USA 9 2021 Yes 9407WVVNNC929BR 0.50
VALSPAR CORP 920 South Center Street, San Carlos, CA 94070-5311, USA 3 1989 N/A 94070THVLS920SO 0.51
REICHHOLD CHEMICALS INC 952 Bransten Road, San Carlos, CA 94070-4029, USA 39 1991 N/A 94070SPNCR952BR 0.52
SOUTH BAY MARBLE INC 797 Industrial Road, San Carlos, CA 94070-3310, USA 17 2014 Yes 94070STHBY797IN 0.59

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 18
AE 0 0 6 10
AH 0 0 0 0
AO 0 0 5 1
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 Palo Alto 0 0 2
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 0 4

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 1
Very High 0 0 1 6
5

Traffic Noise by Hour x Weekday

hour_of_day Monday Tuesday Wednesday Thursday Friday Saturday Sunday
0 58 63 63 NaN 62 69 NaN
1 59 61 59 NaN 58 NaN NaN
2 55 59 57 56 55 NaN 54
3 NaN 56 55 57 58 56 NaN
4 56 55 58 58 58 NaN NaN
5 57 54 56 57 NaN NaN NaN
6 55 56 55 52 56 55 NaN
7 NaN 51 52 54 54 NaN 56
8 54 NaN NaN 55 NaN NaN NaN
9 54 NaN 53 53 53 NaN NaN
10 55 55 NaN 54 55 NaN 54
11 53 54 55 53 NaN NaN NaN
12 NaN NaN 55 NaN NaN 51 53
13 NaN 54 NaN NaN NaN NaN NaN
14 62 57 58 NaN NaN NaN 56
15 NaN 55 63 62 NaN NaN 55
16 NaN 57 58 58 58 NaN 55
17 NaN NaN 58 57 56 NaN 57
18 58 57 NaN NaN 58 59 58
19 58 60 NaN 60 62 NaN 57
20 56 61 58 57 56 NaN 60
21 58 60 61 NaN NaN NaN 56
22 NaN 61 61 62 68 59 58
23 NaN 59 62 61 60 NaN 58
6

Airplane Noise by Hour x Weekday

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