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$1,595,000
New Listing

1689 S Lost Trail
Walnut, CA 91789

For Sale|Single Family Residence|Active
4
Beds
3
Total Baths
3
Full Baths
2,443
SqFt
$653
/SqFt
1988
Built
County:
Los Angeles
Listed by Rebeca Gallegos of AGENCY 8 REAL ESTATE GROUP (909) 373-6642

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1689 S Lost Trail1689 S Lost Trail1689 S Lost Trail1689 S Lost Trail
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Welcome to this charming, original-owner home nestled in the desirable city of Walnut! Offering a unique blend of comfort, character, and versatility, this two-story residence features 4 bedrooms, 2.5 bathrooms, and an abundance of inviting spaces designed for everyday living and entertaining. Step inside to a bright and airy interior featuring a sunken living room that adds character and warmth. The white kitchen offers a fresh, timeless appeal with an island, breakfast bar, dishwasher, and ample space for meal preparation and gathering. The adjoining family room features a beautiful whitewashed brick fireplace, creating a cozy atmosphere for relaxing with family and friends. One of the home's standout features is the amazing sunroom just off the family room, complete with French doors and numerous windows that invite in natural light and create a wonderful space to unwind, entertain, or enjoy the surrounding views. Upstairs, the primary bedroom offers a private balcony, providing a peaceful spot to enjoy the scenery. Plantation shutters add timeless charm throughout the home, while the attic has been converted into a bonus room/5th bedroom offering additional flexible space. The outdoor amenities make this property even more special! Enjoy the brick-front porch with city views, a built-in BBQ perfect for outdoor gatherings, an above-ground jacuzzi for relaxation, and RV parking for added convenience. The spacious three-car garage provides plenty of room for parking, storage, and hobbies. Ideally located near Mt. San Antonio College (Mt. SAC) and Cal Poly Pomona, this home offers convenient access to educational institutions, shopping, dining, and local amenities.

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Listing Snapshot
Price 
$1,595,000
Days On Site 
0 Days
Bedrooms 
4
Inside Area (SqFt) 
2,443 sqft
Total Baths 
3
Full Baths 
3
Partial Baths 
N/A
Lot Size 
0.1953 Acres
Year Built 
1988
MLS Number 
CV26234617
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
11 hours agoListing updated with changes from the MLS
23 hours agoListing first seen on site
General Features
Garage 
Yes
Garage Spaces 
3
Number Of Stories 
2
Parking 
Garage
Parking Spaces 
3
Property Condition 
Updated/Remodeled
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
Special Circumstances 
Standard
SqFt Total 
2443
Utilities 
Electricity AvailableNatural Gas AvailableElectricity ConnectedNatural Gas ConnectedSewer ConnectedWater Connected
Water Source 
Public
Interior Features
Appliances 
Dishwasher
Cooling 
Wall/Window Unit(s)Central Air
Fireplace Features 
GasFamily Room
Flooring 
TileWood
Heating 
Forced Air
Laundry Features 
Washer Hookup
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Exterior Features
Exterior 
Barbecue
Patio And Porch 
PorchGlass Enclosed
Spa Features 
Above Ground
View 
NeighborhoodMountain(s)
Waterview 
NeighborhoodMountain(s)
Community Features
Community Features 
CurbsSidewalks
Listed by Rebeca Gallegos of AGENCY 8 REAL ESTATE GROUP (909) 373-6642



This information is deemed reliable but not guaranteed. You should rely on this information only to decide whether or not to further investigate a particular property. BEFORE MAKING ANY OTHER DECISION, YOU SHOULD PERSONALLY INVESTIGATE THE FACTS (e.g. square footage and lot size) with the assistance of an appropriate professional. You may use this information only to identify properties you may be interested in investigating further. All uses except for personal, non-commercial use in accordance with the foregoing purpose are prohibited. Redistribution or copying of this information, any photographs or video tours is strictly prohibited. This information is derived from the Internet Data Exchange (IDX) service provided by San Diego MLS®. Displayed property listings may be held by a brokerage firm other than the broker and/or agent responsible for this display. The information and any photographs and video tours and the compilation from which they are derived is protected by copyright. Copyright © 2026 San Diego MLS®.

Last checked 2026

Neighborhood & Commute
Source: Walkscore
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