Tucked away on Mt. Helix, this John Mortenson original was designed to integrate into the landscape, with a sweeping roofline, deep overhangs, and walls of glass framing the canyon beyond. Step inside and the space soars. The living room opens beneath a cathedral ceiling, with wall-to-wall windows and a commanding fireplace at its heart, flowing into the dining area and a beautifully remodeled, vaulted eat-in kitchen. Evenings are made for watching the sun drop over the western hills. The home offers 3 bedrooms, 3.5 tastefully remodeled baths, and approx. 2,800 sq ft. The primary suite is a true retreat, with canyon views and a private spa just steps away. Outside, the pool, sun deck, fire pit, and gazebo for alfresco dining set the stage for unforgettable gatherings, all wrapped in the privacy of lush, tranquil gardens. Paid-off solar, 2-car garage, RV parking, and total serenity. A mid-century design legacy you can’t recreate. Competitively priced. Schedule your private tour today!
Property Details
Price:
$1,595,000
MLS #:
260024748SD
Status:
Active
Beds:
3
Baths:
4
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
Mount Helix
Neighborhood:
91941lamesa
Listed Date:
Oct 13, 2026
Finished Sq Ft:
2,495
Lot Size:
23,958 sqft / 0.55 acres (approx)
Year Built:
1963
See this Listing
Schools
Interior
Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
CA
Heating
FA, SEE
Interior Features
CF, ST, OFP, CC
Laundry Features
GAS, IG
Levels
A
Exterior
Construction Materials
OTH, WOD
Garage Spaces
2
Parking Spots
6
Parking Total
6
Patio And Porch Features
PTO
Roof
CMP
View
MT
Financial
Map
Community
- Address9620 Alto Dr La Mesa CA
- SubdivisionMount Helix
- CityLa Mesa
- CountySan Diego
- Zip Code91941
Subdivisions in La Mesa
Market Summary
Current real estate data for Single Family in La Mesa as of Oct 13, 2026
158
Single Family Listed
69
Avg DOM
512
Avg $ / SqFt
$1,133,989
Avg List Price
Property Summary
- Located in the Mount Helix subdivision, 9620 Alto Dr La Mesa CA is a Single Family for sale in La Mesa, CA, 91941. It is listed for $1,595,000 and features 3 beds, 4 baths, and has approximately 2,495 square feet of living space, and was originally constructed in 1963. The current price per square foot is $639. The average price per square foot for Single Family listings in La Mesa is $512. The average listing price for Single Family in La Mesa is $1,133,989.
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