This single-story mid-century modern Atomic Ranch, built in 1957 by architect Chris Cosgrove, sits on a 1-acre lot in Mount Helix and has been impeccably maintained by its original owners. With 6 bedrooms plus a den, 5 bathrooms, and 3,491 sq ft, it showcases rock facades, vaulted wood-beamed ceilings, floor-to-ceiling windows, and original vintage tile. The resort-style front yard features a pool, lush landscaping, citrus trees, and peek-a-boo views, creating an elegant mid-century retreat.This expansive single-story Atomic Ranch, built in 1957 by renowned architect Chris Cosgrove, sits atop a full 1-acre lot in the heart of Mount Helix and has been thoughtfully maintained by its original owners. Designed to embrace indoor-outdoor living, the home features 6 bedrooms plus a den, 5 bathrooms, and 3,491 sq ft of timeless mid-century modern style, including rock facades, vaulted wood-beamed ceilings, floor-to-ceiling windows/doors, wood paneling and original vintage tile. The front yard showcases a resort-style pool surrounded by gorgeous landscaping, mature trees, citrus plantings, and peek-a-boo views, creating a private and inviting outdoor retreat. A spacious driveway provides ample parking and complements the home’s refined, architecturally striking presence—perfect for relaxing or entertaining in true mid-century fashion.
Sold for $1,981,000 on 07/21/25
$1,981,000
4936 Alzeda Dr, La Mesa, CA 91941
6beds
3,491sqft
Single Family Residence
Built in 1957
1 Acres Lot
$1,973,700 Zestimate®
$567/sqft
$8,234 Estimated rent
What's special
Zillow last checked: 7 hours ago
Listing updated: August 09, 2025 at 05:23am
Listed by:
Barbara A Mercer DRE #02036190 619-846-6140,
Mercer Investments Inc.,
Kelli E Mercer DRE #02036189 619-846-2080,
Mercer Investments Inc.
Bought with:
Jared Nelson, DRE #01380018
Compass
Source: SDMLS,MLS#: 250031597
Originating MLS: San Diego Association of REALTOR

Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 6
- Bathrooms: 5
- Full bathrooms: 5
Heating
- Forced Air Unit
Cooling
- Zoned Area(s)
Appliances
- Included: Dishwasher, Dryer, Refrigerator, Washer, Electric Oven, Freezer, Gas Cooking, Gas Water Heater
- Laundry: Electric, Gas
Features
- Flooring: Carpet, Laminate, Tile, Wood, Parquet
- Number of fireplaces: 1
- Fireplace features: FP in Living Room
Interior area
- Total structure area: 3,491
- Total interior livable area: 3,491 sqft
Property
Parking
- Total spaces: 5
- Parking features: None Known
Features
- Levels: 1 Story
- Pool features: Below Ground
- Fencing: Full
- Has view: Yes
- View description: Mountains/Hills, Peek-A-Boo
Lot
- Size: 1 Acres
Details
- Parcel number: 4970710200
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Ranch
- Property subtype: Single Family Residence
Materials
- Stone, Wood/Stucco
- Roof: Composition
Condition
- Year built: 1957
Utilities & green energy
- Sewer: Septic Installed
- Water: Available, Meter on Property
Community & neighborhood
Location
- Region: La Mesa
- Subdivision: MOUNT HELIX
Other
Other facts
- Listing terms: Cash,Conventional,FHA,VA
Services availability
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Estimated market value
$1,973,700