New7
$1,674,880
4 bd · 3 ba · 2,514 sqft
22129 Portofino, Walnut, CA
CBC Sales Corporation · on 3 MLSs

No listing photos
5
Beds
3
Baths
3,245
Sqft
1988
Year built
Range $1,710,371 – $1,895,305 · as of August 30, 2026
ATTOM automated valuation model · 54 published estimates over 6.7 years · shaded band is the model's own published low-to-high range
Highest reading $2,151,000 in March 2024; lowest $1,230,500 in May 2023. The vertical scale starts at the series' own low, not at zero — it is drawn to show movement, not absolute size.
$360,568
Estimated monthly payment
$11,755/mo
Loan amount $1,442,270. Estimate only — your actual rate and payment depend on credit, location, and lender.
2026 roll
New7
$1,674,880
4 bd · 3 ba · 2,514 sqft
22129 Portofino, Walnut, CA
CBC Sales Corporation · on 3 MLSs
74$1,828,888
4 bd · 4 ba · 2,325 sqft
22072 Portofino Drive, Walnut, CA
Chenchen Chang · WeTrust Realty · on 2 MLSs
63$1,455,000
4 bd · 3 ba · 2,265 sqft
20512 Starshine, Walnut, CA
Victor Lam · Coldwell Banker-Campbell Rltrs · on 2 MLSs
Price Reduced47$1,388,888
4 bd · 4 ba · 2,432 sqft
693 Castlehill Dr, Walnut, CA
eXp Realty of California Inc · on 3 MLSs
Price Reduced35$1,298,800
4 bd · 3 ba · 2,265 sqft
20505 Missionary Ridge St, Walnut, CA
WeTrust Realty · on 3 MLSs
Price Reduced75$1,299,000
4 bd · 3 ba · 2,265 sqft
20400 Lake Canyon Drive, Walnut, CA
Adela Olivares · New Century Realtors
The MLS (CLAW)
California Regional Multiple Listing Service (CRMLS)Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.
School ratings (A+ to F) from HJN community data.
Tzu Chi Elementary School
KG-5 · Regular
88 students · 10.3:1 student–teacher
Tzu Chi Elementary Satoa
PK-5 · Regular
65 students · 7.7:1 student–teacher
South Pointe Middle School
6-8 · Regular · Walnut Valley Unified School District
979 students · 25.6:1 student–teacher
Castle Rock Elementary School
San Diego MLSKG-5 · Regular · Walnut Valley Unified School District
684 students · 26.1:1 student–teacher





Rings at ½ mile and 1 mile. Basemap © OpenMapTiles © OpenStreetMap contributors.
Open the Walnut camera map4 license-plate readers mapped within ½ mile of this home, all identified as Flock Safety devices. Nearest: 0.3 mi northeast.
| Device type | Within ½ mi | Within 1 mi |
|---|---|---|
| License-plate readers | 4 | 10 |
| of which Flock Safety | 4 | 10 |
Community-reported via OpenStreetMap; may be incomplete. Data as of . © OpenStreetMap contributors (ODbL)
License-plate readers (ALPR) are fixed cameras that photograph passing vehicles and read their plates. Records are typically shared with the agency or association that operates the camera.
Flock Safety is a company whose plate-reader cameras are used by police departments, cities, HOAs and businesses. Its devices are usually solar-powered and pole-mounted.
Within 2 miles of this home: 23 restaurants and cafés, 5 grocery stores, 6 parks and green spaces, and 7+ transit stops.
Place data from OpenStreetMap.
McDonald's
Colima Road
Colima Burgers
American restaurant
BBQ Stop AYCE
Golden Springs Drive
Chuan Pot
Chinese restaurant · Diamond Bar Boulevard
Atoyubu
Golden Springs Dr
Mr. Dragon Noodle House
Golden Springs Drive
QinJiaMo
Chinese restaurant · Diamond Bar Boulevard
Cafe 101
Asian restaurant · Diamond Bar Boulevard
Stater Bros. Markets
Colima Road
168 Market
Colima Road
H Mart
Asian restaurant · Diamond Bar Boulevard
Hannam Market World
Golden Springs Drive
Diamond Fresh Farmers Market
Golden Springs Drive
Ronald Reagan Park
Starshine Park
Starshine Road
Heritage Park
Diamond Canyon Park
Brea Canyon Road
Rowland Heights Park
Washington Park
Cottonwood Lane
Foothill Transit 482
Foothill Transit 482, 853, 854
Foothill Transit 194
Foothil Transit 482
Foothill Transit 178, 289
Industry
Foothill Transit 178, 289, 482, 493