For Sale at Mount Helix: 4242 Avenida Gregory, Spring Valley, CA 91977. 4-bedroom 3.5-bath, 3308 sf, 1968 Mt. Helix $1,550,000 begin new search
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Overview

Set among the trees in Mt. Helix, this fully reimagined retreat offers 4 bedrooms, 3.5 baths and 3,308 sq ft of thoughtfully designed living space. Soaring wood-beamed ceilings, expansive windows with views to the top of Mt. Helix and modern fireplaces bring warmth and character throughout. The chef’s kitchen features a ZLINE 6-burner range, Il Forno appliances, Taj Mahal quartzite countertops and a hidden walk-in pantry. The adjacent family room opens to a redwood deck and backyard for effortless indoor-outdoor living. Upstairs, the serene primary suite features a spa-inspired bath with body sprayer and dramatic waterfall shower cascading from a skylight. Downstairs, a flexible bonus room is ideal for a gym, playroom, office or potential 5th bedroom, while a second ensuite offers privacy for guests. Outside, enjoy .44 acres of terraced grounds, redwood decking, potential ADU space and a freshly replastered pool with new energy-efficient equipment. Owned solar, a detached shed with utilities and enclosed dog kennel add functionality. Available furnished, this distinctive property is equally suited as a primary residence, second home or investment opportunity.

Address 4242 Avenida Gregory

Spring Valley, CA 91977
Listing Status Active
Asking Price $1,550,000
On Market Date $1,550,000 @ Sep 18, 2026
Listed / On-Market Entered Sep 18, 2026
Original Entry Sep 18, 2026
Property Condition Updated/Remodeled
Rooms
Primary Bedroom, Primary Bathroom, Bonus Room, Laundry, Living Room, Walk-In Pantry, Family Room, Formal Entry, All Bedrooms Up, All Bedrooms Down, Kitchen, Retreat, Walk-In Closet
Square Footage 3308 sf
Bedrooms 4
Full Bathrooms 3
Half Baths 1
Location
Directions Cross Street: Tropico.
Market Area 91977 - Spring Valley
Neighborhood Mt. Helix
Complex Mount Helix
School District Not Listed
Ownership
Age Restriction 0
Property Type
Mello-Roos Fee $0
HOA Fee $0
Public Records
County San Diego
Assessor Parcel# 5000402400
Zoning R-1:SINGLE
Geographic Areas

Airport Compatibility Zone: Montgomery Field

Community College District: Grossmont-cuyamaca CC

Zip Code: 91977

Highway Locator

East of I-15

East of I-5

South of I-8

East of I-805

East of SR-163

South of SR-52

Ocean Distance 11.9 miles
Exterior
Style Single Family Residence
Material Not Listed
Lot Size ~ 19,289 sf
Fencing Redwood,Excellent Condition,Brick,Wrought Iron
Topography Not Listed
Roof Composition
Swimming Pool In Ground, Private, See Remarks
Patio Covered, Wood, Concrete
Exclusive Yard 1
Parking
Concrete
Direct Garage Access
Total Spaces: 6
Garage Spaces: 2
Non-Garage Spaces: 0 - 4.00
View Mountain(s)
Features
Year Built 1968 (source: Assessor)
Laundry Location Inside,Gas & Electric Dryer Hookup,Washer Hookup,See Remarks
Elevator Not Listed
Cooling Central Air
Heating Fireplace(s), Forced Air, See Remarks
Fireplaces Raised Hearth,Living Room,Family Room,Wood Stove Insert (1)
Interior Features Beamed Ceilings, Furnished, Living Room Deck Attached, Stone Counters, Cathedral Ceiling(s)
Additional Parcels No
Appliances Convection Oven, Disposal, Built-In Range, Refrigerator, Range Hood, Ice Maker, Gas Range, Double Oven, Dishwasher
Appliances Yes
Assessments No
Association No
Association Fee 2 0
Attached Garage No
Below Grade Finished Area 0
Carport Spaces 0
Construction Materials Stucco
Cooling Yes
Eating Area Dining Room
Heating Yes
Land Lease No
Laundry Yes
Levels Two
Living Area Source Assessor
Lot Size Source Assessor
Lot Size Units Square Feet
Main Level Bathrooms 0
Main Level Bedrooms 0
New Construction No
Number Of Units Total 0
Number Remotes 0
Parking Yes
Patio Yes
Pool Private Yes
Property Attached No
Sprinklers No
View Yes
Well Depth 0
Well Gallons Per Minute 0
Well Pump Horsepower 0
Well Report No
Monthly Payment Calculator
Property Tax estimate of 1% of listing price does not include local voter-approved bonds/assessments, supplemental taxes for new construction or ownership changes, extra local fees, etc.
Listing Source
Platform CRMLS
AOR San Diego
MLS Number 260022919SD
Courtesy of Aperture Real Estate Services
Listing Agent Nicole Nevin