---
listing_id: ML82011797
status: Closed
price: 1160000
beds: 3
baths_full: 2
baths_half: 0
sqft_living: 1170
sqft_lot: 4000
lot_acres: 
year_built: 1926
property_type: Residential
property_subtype: Single Family Residence
address: "423 Walnut Ave"
city: South San Francisco
state: CA
zip: 94080
county: "San Mateo County"
lat: 37.657893
lng: -122.413946
days_on_market: 308
hoa_fee: 
hoa_frequency: 
garage_spaces: 2
list_agent: "Sandra Comaroto"
list_office: "Compass"
list_agent_phone: "(650) 714-1359"
list_agent_license: 01791546
mls_source: MLSL
modified: 2026-01-30
transaction_type: recentlySold
---

Home | San Mateo County | South San Francisco | 94080 | 423 Walnut Ave

423 Walnut Ave, South San Francisco, CA 94080

MLS: ML82011797 | Status: Sold | Price: $1,160,000
Beds/Baths: 3 / 2
Property Type: Residential

Quick Facts

Beds Baths Sq Ft Sq Ft Lot Yr Built
3 2 1,170 4,000 1926

Remarks

Outstanding value and location! Freshly updated inside and out, this charming 1926 bungalow offers classic appeal in the sought-after Sign Hill neighborhood. All new paint, carpet, and fencing enhance the bright, welcoming feel inside and out. City and hill views unfold from the living room plus there is a spacious kitchen and dining area. There are 3 bedrooms, 1 bath, and a large laundry room with outside access and stairs to the lower-level tandem garage. Two large storage/workshop areas and a bonus bath with shower (without the benefits of permits) offer potential for added living space on this level (buyer to confirm with City). The approximately 4,000-sf lot includes a generous, fenced side yard with space for gardening, play, or possible ADU (buyer to verify). Great location just blocks to downtown shops, cafes, and Spruce Elementary, less than a half mile to the Sign Hill Park trailhead, plus minutes to biotech centers, BART, and freeway access to San Francisco or Silicon Valley.

MLS Listing Information

Field Value
MLS # ML82011797
MLS Source MLSListings, Inc.

Features

Interior Features

Feature Details
Bathrooms Shower over Tub - 1, Stall Shower
Kitchen Countertop - Laminate
Appliances Dishwasher, Oven Range - Electric
Dining Room Dining Area
Family Room No Family Room
Flooring Carpet, Tile, Vinyl/Linoleum
Laundry Inside
Cooling None
Heating Central Forced Air - Gas

Exterior Features

Feature Details
Roof Composition, Shingle
Foundation Concrete Perimeter, Pillar/Post/Pier, Raised
Style Bungalow

Parking, School, and Other Information

Feature Details
Garage/Parking Attached Garage, On Street, Garage: 2 Car(s)
Elementary District South San Francisco Unified
High School District South San Francisco Unified
Sewer Public Sewer
Zoning R10006

Contact Information

Sandra Comaroto
Compass
License #: 01791546
Phone: (650) 714-1359

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
Spruce Elementary School public K-5 0.11 mi 4
Martin Elementary School public K-5 0.41 mi 1
Los Cerritos Elementary School public K-5 0.86 mi 1
Community Day public 6-12 0.86 mi N/A
Parkway Heights Middle School public 6-8 0.87 mi 2
South San Francisco High School public 9-12 1.07 mi 8
Baden High (Continuation) School public 9-12 1.32 mi 2
Sunshine Gardens Elementary School public K-5 1.33 mi 6
South San Francisco Adult public UG 1.33 mi N/A
Ponderosa Elementary School public K-5 1.36 mi 7
El Camino High School public 9-12 1.67 mi 10
Buri Buri Elementary School public K-5 1.74 mi 8
Brisbane Elementary School public K-5 1.77 mi 8
Lipman Middle School public 6-8 1.98 mi 8
Alta Loma Middle School public 6-8 1.99 mi 5
Allen (Decima M.) Elementary School public K-5 2.32 mi 6
Belle Air Elementary School public K-5 2.34 mi 3
Monte Verde Elementary School public K-5 2.55 mi 9
Westborough Middle School public 6-8 2.75 mi 6
Skyline Elementary School public K-5 2.85 mi 8

Disclosures

©2026 MLSListings Inc. All rights reserved. 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. Information provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from MLSListings Inc.

Presently MLSListings.com displays Active, Contingent, Pending, and Recently Sold listings. Recently Sold listings are properties which were sold within the last three years. After that period listings are no longer displayed in MLSListings.com. Pending listings are properties under contract and no longer available for sale. Contingent listings are properties where there is an accepted offer, and seller may be seeking back-up offers. Active listings are available for sale.

This listing information is up-to-date as of January 30, 2026. For the most current information, please contact Sandra Comaroto, (650) 714-1359.