Back 1115 S Mollison Ave
Off Market

1115 S Mollison Ave

Casa de Oro-Mount Helix CA 92020

4
5
6
3900 sq. ft.
56600 sq. ft.
Single-Family
Last sold for $1,550,000
Melissa TucciMelissa Tucci, last sold this property on 17 April 2026 after 127 days on market.

Overview

Set within the prestigious Horizon Hills enclave and embraced by the scenic foothills of Mt. Merritt and Mount Helix, this remarkable 1.3-acre estate captures the essence of refined California living. Surrounded by lush, park-like grounds adorned with mature trees, tranquil fountains, curated gardens, and sweeping vistas across the El Cajon Valley, the property offers a rare sense of seclusion and grandeur. The 3,200+ square foot main residence is a masterful expression of timeless craftsmanship and architectural heritage, thoughtfully honoring its 1925 origins while seamlessly integrating modern luxuries. Polished hardwood floors, intricate stained-glass accents, crown-molded ceilings, bespoke vintage lighting, and multiple fireplaces create an atmosphere of warmth and distinction. The light-filled interior features dual living spaces ideal for both formal and relaxed gatherings, along with a first-floor ensuite bedroom for added flexibility. At the heart of the home, the chef’s kitchen is both elegant and highly functional—appointed with a double Sub-Zero refrigerator and freezer, farmhouse sink, center island, skylights, a new Dacor smart oven and microwave, and a Kenmore Pro six-burner range. An adjacent sitting and dining area provides an intimate setting for entertaining. Upstairs, the primary suite is a true sanctuary, complete with dual walk-in closets, a two-sided fireplace, and a spa-inspired marble bath featuring a jetted soaking tub. Additional bedrooms share a spacious Jack-and-Jill bath, while an expansive multi-purpose room offers versatility for hobbies, laundry, or creative pursuits. Outdoors, the estate transforms into a private resort, showcasing a custom pool with waterfall and slide, umbrella stations, and generous Trex decking—an extraordinary backdrop for grand-scale entertaining or serene sunset evenings in complete privacy. A sweeping wraparound drive introduces the estate, offering effortless access and abundant parking for automobiles, recreational vehicles, boats, and prized collections alike—complemented by a private basketball court for recreation. A detached guest residence of approximately 700 square feet, complete with a full kitchen, provides refined accommodations for extended family, guests, or the opportunity for supplemental income. Thoughtfully enhanced and meticulously maintained, the property also features newer windows, generous storage throughout, a workshop with dedicated 220V service, central vacuum, updated HVAC, rich stone and hardwood flooring, multiple outdoor patios, and a pre-poured spa slab ready for installation. With the option to convert the detached garage to suit your needs, the estate offers exceptional flexibility. Privately set yet just moments from daily conveniences, this Horizon Hills sanctuary masterfully blends historic character, curated updates, and resort-caliber amenities into a truly distinctive offering.

Features

4 bedrooms
5 bathrooms
6 carspaces
3900 sq. ft. floor area
56600 sq. ft. lot size
Single-Family

Estimated Value

Based on this property and similar 4 bedroom single-family properties sold in Casa de Oro-Mount Helix over the last 12 months, the estimated median property value of 1115 S Mollison Ave is $1.15m.

Median value
$1.15m
Estimated value range
$668k - $2m
Median days on market
12
Estimated value trend
2%
increase over the last 12 months
Average days on market is based on recent, comparable sales in Casa de Oro-Mount Helix. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 1115 S Mollison Ave

2026
Sold
$1,550,000
17 Apr 2026 by Melissa Tucci, of Melissa Goldstein Tucci

Happy sellers in Casa de Oro-Mount Helix

94%
94% of sellers in Casa de Oro-Mount Helix reported that their sale price either exceeded or met their price expectations.

Casa de Oro-Mount Helix stands out for consistently delivering exceptional satisfaction and strong market results for homeowners.

This is based on voluntary sentiment collected from 3 reviews in Casa de Oro-Mount Helix over the last 12 months.

Local market activity for 4 bedroom single-family properties in Casa de Oro-Mount Helix

In the last 12 months, 75 four-bedroom single-family properties similar to 1115 S Mollison Ave, have been sold.

This represents a 2% increase in four-bedroom single-family properties sales when compared to the previous 12 months.

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