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$3,999,900
● House - For Sale

9775 Alto Dr

La Mesa, CA 91941
bedrooms
5 Beds
bathrooms
5 Baths, 1 Half Bath
square feet
6,321 Ft²
$19,641
Est. Monthly

About This Property

Experience luxury living in the heart of Mt. Helix with this fully remodeled estate offering panoramic views of the surrounding mountains, downtown San Diego, Coronado, and the Pacific Ocean. Spanning approximately 6,322 square feet, this exceptional residence features 5 bedrooms, 5.5 bathrooms, including two primary suites, and breathtaking views from nearly every room. The open-concept floor plan showcases wide-plank hardwood flooring, designer finishes, custom cabinetry, marble-clad bathrooms, and expansive windows that bring the outdoors in. The chef's kitchen opens seamlessly to the living and dining areas, creating an ideal setting for entertaining. Multiple view terraces and outdoor living spaces provide the perfect backdrop for sunsets and sparkling city lights. The lower level offers a spacious secondary living area with a large family room, wet bar, wine storage, and flexible bonus space ideal for a theater, gym, office, or multigenerational living. Situated on approximately 0.81 acres with a gated entrance, expansive motor court, and 3-car garage, this rare Mt. Helix estate offers an unmatched combination of privacy, space, luxury, and spectacular views. A truly one-of-a-kind opportunity.  Experience luxury living in the heart of Mt. Helix with this fully remodeled estate offering panoramic views of the surrounding mountains, downtown San Diego, Coronado, and the Pacific Ocean. Spanning approximately 6,322 square feet, this exceptional residence features 5 bedrooms, 5.5 bathrooms, including two primary suites, and breathtaking views from nearly every room. The open-concept floor plan showcases wide-plank hardwood flooring, designer finishes, custom cabinetry, marble-clad bathrooms, and expansive windows that bring the outdoors in. The chef's kitchen opens seamlessly to the living and dining areas, creating an ideal setting for entertaining. Multiple view terraces and outdoor living spaces provide the perfect backdrop for sunsets and sparkling city lights. The lower level offers a spacious secondary living area with a large family room, wet bar, wine storage, and flexible bonus space ideal for a theater, gym, office, or multigenerational living. Situated on approximately 0.81 acres with a gated entrance, expansive motor court, and 3-car garage, this rare Mt. Helix estate offers an unmatched combination of privacy, space, luxury, and spectacular views. A truly one-of-a-kind opportunity.
Unit Size
6,321 Ft²
Days on Market
124 days
Land Size
0.81 acres
Price per sqft
$633
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1992

Listed By

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Last updated: 4 months ago (SDMLS #260014796SD)

Price History

Date / Event Date Event Price
Jun 18, 2026 Listed by Century 21 Affiliated $3,999,900
Listed by Century 21 Affiliated
Oct 6, 2025 Listed $4,500,000
Listed
Breathtaking views. Endless sunsets. Absolute tranquility. Welcome to 9775 Alto Drive—where modern luxury meets the timeless beauty of Mt. Helix living. From the moment you arrive, you’re greeted by breathtaking views stretching from the rolling hills of Mt. Helix to downtown San Diego, with shimmering ocean views glinting on the horizon. Every room offers a new perspective—each more captivating than the last. Completely reimagined by the owner, this residence reflects a perfect balance of sophistication and comfort. Rich hardwood floors, marble-clad spa-inspired baths, and an open, airy floor plan invite the outdoors in. Designed for both everyday living and grand entertaining, the home features a custom wine room, a stylish entertainment lounge, and a private theater room for unforgettable nights in. Step out onto the expansive deck and take in the panoramic skyline, the ocean breeze, and the golden glow of San Diego sunsets. The gated drive and elegant approach leads to a sanctuary that feels both glamorous and grounding—a true retreat above it all. Experience the beauty, privacy, and sophistication of this Mt. Helix masterpiece- crafted for those who appreciate elevated living at its finest.

Property Highlights

Air Conditioning
Fireplace
Garage
Parking Details
Has Garage
Attached Garage
Parking Features: Driveway
Garage Spaces: 3
Open Parking Spaces: 6
Interior Details
Half Bathrooms: 1
Full Bathrooms: 5
Appliances: Dishwasher, Microwave, Refrigerator
Laundry Features: Electric Dryer Hookup, Gas Dryer Hookup, Laundry Room
Has Fireplace
Fireplace Features: Living Room
Exterior Details
Square Footage: 6321
Square Footage Source: $0
Year Built: 1992
Levels: Two
Construction Materials: Stucco
Patio and Porch Features: Covered, Deck
Pool Features: None
Lot Size Area: 35283
Lot Size Units: Square Feet
Lot Size Acres: 0.81
Lot Size Square Feet: 35283
Utilities Details
Cooling Type: Central Air, Zoned
Heating Type: Forced Air, Natural Gas

Building Info

Overview

    General

  • Year Built: 1992
  • Effective Year Built: 1992
  • Building Count: 1
  • Bedroom Count: 5
  • Bathroom Count: 6
  • Full Bathrooms: 5
  • Partial Bathrooms: 6
  • Building Condition: 0
  • Building Quality: 0
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 1
  • Parking Space Count: 3
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0
  • Location Influence Type: 224

    Dimensions

  • Lot Size Square Feet: 35,284
  • Total Building Area: 5,478
  • Gross Building Area: 5,478
  • Building Area: 5,478
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heated Square Feet: 5,478
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: LA MESA 3655
  • Land Acres: 0000000810
  • Standard Land Use Code: 1001
  • County Land Use Code: 11
  • Legal Description 1: LOT 9 TR 9408

Neighborhood

  • School District Name: Grossmont Union High School District
  • School Tax School District: LA MESA-SPR VLY
  • Census Tract: 015200

Zoning

  • Zoning: RR

Geography

  • Assessors Map Reference: 9408
  • Subdivision Tract Number: 9408
  • Parcel: 496-430-09-00
  • Lot: 9
  • Municipality: LA MESA SPRING VALLEY
  • Latitude: 32.766
  • Longitude: -116.986

    Address

  • Full Address: 9775 Alto Dr
  • Address - House Number: 9775
  • Address - Street Name: Alto
  • Address - Suffix Type: Dr
  • State: CA
  • City Name: La Mesa
  • Carrier Code: C048
  • 4-Digit Zip Code: 4473
  • Zip Code: 91941

Valuation

    Tax

  • Tax Year: 2023
  • Tax Amount: $2,289,718
  • Tax Rate Code Area: 83-299

    Appraisal Valuation

  • Standard Deviation: 0.0528
  • Valuation Date: Jan 27, 2024
  • Confidence Score: 99
  • Final Value: 2,006,904
  • High Value: 2,112,881
  • Low Value: 1,900,927

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $1,900,000
  • Assessed Land Value: $722,000
  • Assessed Improvements Value: $1,178,000

    Sales

  • Current Sale Contract Date: Dec 15, 2023
  • Current Sale Recording Date: Dec 21, 2023
  • Current Sale Price:
  • Current Sale Document Type: 36
  • Current Sale Input Document Number: 350638
  • Previous Sale Recording Date: May 09, 2002
  • Previous Sale Contract Date: Feb 26, 2002
  • Previous Sale Document Type: 36
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Casa de Oro-Mount Helix


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Frequently Asked Questions

When was property at 9775 Alto Drive built and last sold?
The property at 9775 Alto Drive was built in 1992 and last sold on Dec 15, 2023 for $2,125,000.
How much is this home worth?
The estimated value of the home located at 9775 Alto Drive is $4,039,899.
What are some comparable homes to 9775 Alto Drive?
There are currently no comparable homes to 9775 Alto Drive.