Case study, nº 02
A residence on Alpine Dr.
The Turning Court · Beverly Hills · HR Development Inc.
The residence
Alpine Dr, Beverly Hills
The Turning Court
- Configuration
- One story over a habitable basement, with a subterranean garage
- Typology
- New construction, hillside lot
- Lot
- 20,376 sf · 0.47 acre · slope-density site
- Residence
- 10,677 sf: 5,970 sf main floor + 4,707 sf basement, plus 1,753 sf subterranean garage
- Bedrooms
- 6
- Building height
- About 30 feet
Alpine is a modern estate defined by what it can do. A car arrives on an in-ground turntable; the roof carries a forty-five kilowatt solar array tied to five Tesla batteries; ten Mitsubishi zones condition the house. Glass walls open the main level over a deep habitable basement, and a steam suite, sauna, and gym form a true wellness floor.
The site is a slope-density hillside lot in the very-high fire-hazard zone, which dictates the structure: drilled piles, shotcrete shear walls, and a structural pool carried through geotechnical review and deputy inspection. Energy independence is not incidental here; it is engineered into the roof and battery system from the first slab.
The engineering
HR Development sequenced the pile program, the shotcrete shear walls, and the structural pool as the primary construction challenge, then built the energy independence, the ten-unit mechanical system, automation, and the turntable's pit, drive, and controls around that foundation. The result is a residence that functions as a self-contained system.
The estate
Engineered for independence
Alpine is organized around its technical program: a turntable at arrival, solar and battery storage on the roof, a ten-zone mechanical system, and a habitable basement with a full wellness floor, carried on pile foundations through a challenging hillside site.
Arrival & motor court
- In-ground vehicle turntable (Carousel USA)
- Subterranean garage, 1,753 sf
Main level
- Fleetwood pivot and thermal-glass walls
- Open living and dining
- Primary suite
- 5 additional bedrooms
Wellness floor
- Waterworks steam suite
- Dry sauna
- Gym with bath
Energy & mechanical
- Rooftop solar array, approximately 45 kW (98 modules)
- Five Tesla Powerwall 3 batteries
- Ten-unit Mitsubishi multi-zone HVAC system
Structure
- Drilled pile foundations
- Shotcrete shear walls
- Structural pool
- Slope-density and geotechnical review
The build sequence
How it came together
The order the work was solved — from the structure outward to the final finish.
Hillside substructure
Drilled piles and shotcrete shear walls carried through geotechnical review and deputy inspection on a slope-density lot.
Structural pool
A structural pool engineered into the hillside frame.
Energy & mechanical
Energy independence and the ten-zone Mitsubishi mechanical system integrated from the first slab.
Automation & turntable
Automation and the motor-court turntable's pit, drive, and controls planned in from the start.
Nº 013D Rendering, Exterior Architecture
The arrival elevation
Approved renderings of the glass façade and motor court as planned on the hillside site.
Nº 023D Rendering, Pool & Outdoor
Pool and terrace
Rendering of the structural pool and outdoor living terraces.
Nº 03Exterior Architecture
One level, one horizon
A single luminous plane over the hillside, with glass walls and a turntable court defining the arrival.
Nº 043D Rendering, Bar & Lounge
Bar and lounge
Renderings of the bar and lounge program on the entertainment level.
Nº 053D Rendering, Staircases
Vertical circulation
Rendering of the sculptural stair connecting the main level to the floor below.
Nº 06Staircases
On site
The sculptural stair as built, connecting the main level to the habitable basement.
Nº 073D Rendering, Gym & Wellness
The wellness floor
Rendering of the steam suite, sauna, and gym on the lower level.
Nº 083D Rendering, Primary Suite
The primary suite
Renderings of the top-floor suite and its relationship to the view.
Nº 093D Rendering, Closets & Dressing
Dressing rooms
Rendering of the custom closet and dressing program.
Nº 10Solar
Energy on the roof
The forty-five kilowatt solar array and battery storage as installed on the roof plane.
Nº 11Extra Large Doors And Windows
Fleetwood glazing
Overscale pivot and thermal-glass walls that open the main level to the hillside.
Nº 12Construction Progress
Built on piles
Drilled piles, shotcrete shear walls, and core construction through geotechnical review.
