Arroyo Oak House: A Sustainable Modern Residence by ANX by Aaron Neubert Architects

The Arroyo Oak House, designed by ANX / Aaron Neubert Architects, is a striking residential project located in Castaic, California. Completed in 2022, the 5,000-square-foot home embodies a deep connection to the rugged Southern California landscape while delivering modern luxury, sustainability, and architectural innovation.

A Home Rooted in Landscape and Lifestyle

The client, long burdened by two-hour work commutes, sought to relocate closer to their Southern California manufacturing company. The site chosen was an undeveloped sandstone terrain, bisected by a dry arroyo and surrounded by native yucca, oak, sagebrush, and cactus.

This landscape not only inspired the design but also became an integral part of it, allowing the home to maintain the client’s desire for a close connection to nature.

Interlocking Pavilions and Site Integration

The design responds directly to the semi-arid landscape of the Sierra Pelona Mountains. Instead of a monolithic structure, the architects created interlocking pavilions that overlap across the terrain.

These carefully oriented volumes create:

• Terraces and gardens of varying scales.
• Decks and outdoor living areas seamlessly linked to interior spaces.
• Expansive mountain and sky views, framed through both primary apertures and fissures between pavilions.

The result is a home that blurs boundaries between inside and outside, allowing the landscape to permeate every part of the living experience.

Arrival and Spatial Experience

On approach, visitors are greeted by an elevated zinc-clad volume. Its surface is both transparent and reflective—capturing clouds, sunlight, and distant ridgelines.

Inside, the spatial organization unfolds as a collage of mountain and sky views. Split-level interiors connect to exterior terraces, creating a rhythm of openness and enclosure.

Lower Level: Connection to the Hillside

The lower floor, carved into the hillside, houses a:

• Home gym
• Guest suite
• Laundry room
• Pool terrace with panoramic vistas

Material continuity of cedar and limestone strengthens the dialogue between the interior and surrounding terrain, accentuating the indoor-outdoor living experience.

Upper Level: Private and Professional Retreats

The upper floor includes:

• A primary bedroom suite with uninterrupted views
• Home office designed for productivity in natural light
• Two secondary bedrooms
• A linear balcony and lounge deck, enhancing outdoor leisure

These private spaces embrace California’s climate while maintaining a strong connection to the natural surroundings.

Pool Terrace and Outdoor Living

At the heart of the project is the pool terrace and open-air living room, extending directly to the meadow and the arroyo below.

This zone enhances a preexisting wildlife path and introduces a walking loop for exploring the property, ensuring the design respects ecological flows while offering recreational opportunities.

Responding to Fire and Climate Challenges

Given the site’s fire-prone landscape and semi-arid climate, the architects carefully considered:

• Solar orientation to maximize efficiency
• Seasonal conditions to guide positioning
• Plant specifications and irrigation systems, developed with Atomic Irrigation and LPO Landscape Design

The result is a resilient and sustainable home, adapted to its unique environmental conditions.

Materials and Aesthetic Language

The zinc cladding provides durability and a reflective quality that shifts with the sky. Natural materials such as cedar wood and limestone ground the home in the site’s rugged palette, reinforcing a warm yet modern aesthetic.

Large windows by Fleetwood and natural stone finishes by Eco Outdoor enhance the material richness, while systems by Mitsubishi ensure efficient climate control.

Modern Living in Harmony with Nature

The Arroyo Oak House exemplifies how architecture can merge luxury living with ecological sensitivity. By embracing the rugged landscape, ANX / Aaron Neubert Architects created a residence that balances transparency, resilience, and comfort.

This project stands as a model of Southern California modern architecture, where sustainable design, landscape integration, and residential innovation converge seamlessly.

All the photographs are works of Brian Thomas Jones