yatzer The entry porch of Pine Flat Residence at golden hour, where corrugated Corten panels glow in deep amber light and concrete steps with a steel handrail lead up to the covered outdoor dining area. Built-in concrete benches, a timber-lined soffit overhead, and the folding solar shading panels beyond compose an arrival sequence of concentrated material richness.

Off-Grid and Fire-Ready: A Corten-Clad House in the California Mountains by Faulkner Architects

Words by Yatzer

Healdsburg, California, USA

When the 2019 Kincade Fire destroyed the original off-grid house on this remote plot in the Mayacamas Mountains northeast of Healdsburg, California, the owners chose to rebuild on their own terms. Designed by San Francisco-based Faulkner Architects, Pine Flat residence is a quietly assured structure that draws on the rugged character of its wildland setting while confronting, head-on, the realities of building in fire-prone terrain. Clad in fire-resistant Corten steel, the house reads as both a measured architectural statement and a pragmatic act of resilience.

A single timber armchair on the covered deck of Pine Flat Residence, its sculptural form casting graphic shadows across the hardwood decking in sharp afternoon light. A raw concrete soffit overhead, reeded Corten panels to one side, and a slender steel railing frame an expansive mountain panorama — the composition reduced to its most essential elements.

Photography by Joe Fletcher.

The cantilevered deck of Pine Flat Residence by Faulkner Architects projects boldly over the California hillside, its corrugated Corten cladding and steel beam structure framing a wide valley panorama. The composition reads almost as a picture frame held up to the landscape, the warm oxidised metal contrasting with the blue-green expanse of forested ridgelines beyond.

Photography by Joe Fletcher.

A high aerial view reveals Pine Flat Residence as a small, vivid presence in the immense scale of the Mayacamas mountain range. The Corten roof glows copper-orange against a sea of green woodland and misty ridgelines receding toward the horizon, the image making a quiet but pointed argument for the house's modesty relative to its setting.

Photography by Joe Fletcher.

A long view of Pine Flat Residence nestled into the forested folds of the Mayacamas Mountains, its Corten-clad form barely registering against the dense California woodland. The image underscores the project's deliberate restraint in scale and siting — a small, precise intervention in a vast and indifferent landscape.

Photography by Joe Fletcher.

  • Pine Flat Residence by Faulkner Architects sits firmly within its California hillside setting, its Corten-clad upper volume cantilevering over a concrete base anchored into the slope. The corrugated steel facade catches the early morning light, its warm amber patina rhyming with the dry grasses and rocky terrain of the surrounding wildland.

    Photography by Joe Fletcher.

  • A clear-sky view of Pine Flat Residence's south elevation, its rectilinear Corten-clad upper volume cantilevering above a concrete plinth embedded in the dry California hillside. Stone stepping-stones lead up through the native scrub, the informal approach contrasting with the house's precise, industrial geometry overhead.

    Photography by Joe Fletcher.

Pine Flat Residence by Faulkner Architects reflected in a still pond below the Mayacamas hillside. The cantilevered Corten-clad upper volume, its warm oxidised hue deepened by overcast light, hovers above a concrete base that dissolves into the terrain. Dense California woodland frames the composition, reinforcing the house's deliberate rootedness in its landscape.

Photography by Joe Fletcher.

  • Pine Flat Residence glimpsed through a pine forest, its corrugated Corten volumes glowing amber between dark tree trunks in sharp California sunlight. The image captures the house as the surrounding woodland might see it — a warm, oxidised presence partially absorbed into the tree line, its red garage door just visible at the far right edge of the frame.

    Photography by Joe Fletcher.

  • Pine Flat Residence's north elevation in spring, its corrugated Corten upper volume and flat-roofed garage block set above a concrete base amid lavender and emerging native plants. The angled junction between the two Corten volumes is clearly legible here, the trapezoid garage form wedging against the rectilinear main house with deliberate, almost sculptural precision.

    Photography by Joe Fletcher.

  • A close-up of Pine Flat Residence's garage volume — the most enclosed face of the building — where corrugated Corten cladding fills the entire frame, its vertical rhythm and rich oxidised patina shifting from amber to deep rust. Three square windows punctuate the surface asymmetrically, their deep reveals and graphic shadows reinforcing the facade's sculptural, almost monolithic presence.

    Photography by Joe Fletcher.

Pine Flat Residence among spring wildflowers, its corrugated Corten volumes set against a California hillside landscape of yellow blooms, outcrops, and pine. A vivid red garage door punctuates the otherwise monolithic Corten facade with a single sharp accent of colour — the one moment in the project where restraint gives way to something close to wit.

Photography by Joe Fletcher.

The two-storey house unfolds as a dialogue between old and new. Rather than starting anew, the architects retained ninety per cent of the existing concrete foundations, which now anchor the half-buried lower volume, partially absorbed into the hillside’s natural contours. This concrete base becomes a plinth for the cantilevered upper volume, its rectilinear form tracking the ridgeline. Clad in fire-resistant Corten steel, its weathering patina lends the structure an earthy hue that allows it to settle more seamlessly into the landscape. A smaller, adjoining volume accommodates the garage, while the entry porch, wedged between the two, doubles as an al fresco dining area.

Fire resilience is embedded within the building’s logic rather than appended as an afterthought. Alongside the Corten shell, sliding ember screens and exterior deck sprinklers mitigate the threat of radiant heat and airborne embers. The house operates entirely off-grid, supported by solar power, spring-fed water, and supplementary hydroelectric generation.

A close view of Pine Flat Residence's entry porch, where wide concrete steps and a simple steel handrail lead beneath a deep Corten overhang. The corrugated weathering steel — shifting in tone from burnt sienna to deep copper — wraps walls, soffit, and fascia in a single uninterrupted material, the folding solar shade panels visible beyond contributing further tectonic clarity.

Photography by Joe Fletcher.

A detail of the compressed passage between Pine Flat Residence's main and garage volumes, where Corten flat panels meet corrugated cladding and perforated ember screens in a concentrated study of material variation. A framed view of the California hillside beyond — green scrub, blue sky — offers a moment of relief from the dense industrial enclosure on either side.

Photography by Joe Fletcher.

An extreme close-up of Pine Flat Residence's Corten sliding door panel, the weathering steel surface filling the frame in a wash of amber, rust, and deep teal where oxidisation has taken on cooler tones. A minimal flush handle and two bolt heads are the only interruptions — a detail that treats the material's natural patina as sufficient ornament in itself.

Photography by Joe Fletcher.

The entry porch of Pine Flat Residence viewed from within, where perforated Corten ember screens enclose the space in a warm amber glow, their fine mesh filtering light and blurring views of the corrugated garage facade beyond. Timber decking steps and a ceramic bowl on a built-in bench ground the industrial enclosure with quiet domestic detail.

Photography by Joe Fletcher.

yatzer The entry porch of Pine Flat Residence at golden hour, where corrugated Corten panels glow in deep amber light and concrete steps with a steel handrail lead up to the covered outdoor dining area. Built-in concrete benches, a timber-lined soffit overhead, and the folding solar shading panels beyond compose an arrival sequence of concentrated material richness.

Photography by Joe Fletcher.

A compressed entry passage at Pine Flat Residence, where flat steel panels in deep blue-grey flank corrugated Corten cladding in a striking material contrast. The dark timber decking of the corridor draws the eye toward a sliver of pine-filled landscape beyond, creating a moment of compressed drama before the interior opens up.

Photography by Joe Fletcher.

The entry porch of Pine Flat Residence, viewed from within, where sliding perforated metal ember screens filter light and frame the corrugated Corten-clad garage volume opposite. The screens serve a dual purpose — wildfire protection and solar shading — while their fine mesh texture introduces a delicate counterpoint to the raw industrial materiality surrounding them.

Photography by Joe Fletcher.

A view of Pine Flat Residence reveals the full composition: the corrugated Corten-clad main volume and the garage block flanking the entry, with a narrow lap pool set into the gravel forecourt. Warm evening light catches the varying patinas of the weathering steel, from deep amber to burnished copper, against a California hillside backdrop.

Photography by Joe Fletcher.

The dining area of Pine Flat Residence, where Wishbone chairs around a dark timber table face floor-to-ceiling sliding glass screens opening onto the covered deck. Sun loungers and the forested ridgeline beyond complete a layered composition of interior warmth, structural precision, and unobstructed landscape — inside and outside held in easy equilibrium.

Photography by Joe Fletcher.

A lower-level bedroom of Pine Flat Residence, where morning light enters through black steel-framed windows fitted with perforated ember screens, casting warm geometric shadows across a pitted, cracked concrete wall. An oak bed frame, grid-pattern linen, and a minimal task lamp complete an interior of deliberate rawness — brutalist in material language, quietly domestic in feel.

Photography by Joe Fletcher.

The architecture’s industrial sensibility carries seamlessly into the interiors. Exposed concrete and steel establish a restrained material palette, softened by natural wood, from hardwood floors and timber-lined ceilings to a furniture selection that leans towards warm Scandinavian modernism. The effect is deliberately understated, allowing the landscape, framed in every direction through expansive glazing, to take precedence.

On the upper floor, the open-plan living area and primary bedroom extend onto a covered deck through floor-to-ceiling sliding glass screens, opening up expansive, unhurried views across the valley. Below, the partially buried concrete level houses a generous studio that spills onto a lower terrace, flanked by two additional bedrooms, a workshop, and a sauna. At the rear, a skylight draws daylight deep into the plan, counterbalancing the studio’s subterranean character.

  • The lower-level studio of Pine Flat Residence, where a clerestory slot at the junction of the two volumes admits a shaft of daylight that travels across dark board-formed concrete walls and polished concrete floor. A warm timber sliding barn door introduces the only note of softness into an otherwise raw, gallery-like space of considerable spatial intensity.

    Photography by Joe Fletcher.

  • A detail of Pine Flat Residence's lower level, where a glazed slot between the concrete retaining wall and the cantilevering Corten upper volume admits a band of open sky. The image captures the tectonic logic of the house in miniature: raw board-formed concrete below, dark steel structure above, with corrugated Corten cladding beyond — three materials in frank, unhierarchical dialogue.

    Photography by Joe Fletcher.

  • The lower-level studio of Pine Flat Residence, where a wide clerestory slot admits a generous band of sky and treetops above a raw board-formed concrete wall. A minimal dark steel daybed sits at the base of the wall, the composition — polished concrete floor, timber sliding door, exposed structure — achieving a spare, almost monastic quality.

    Photography by Joe Fletcher.

Pine Flat Residence's open-plan kitchen by Faulkner Architects, where blackened steel cabinetry and a dark island are anchored beneath a warm white oak ceiling. Wishbone chairs at the dining table and white dome pendants introduce Scandinavian restraint, while reeded glass ember screens — visible beyond the glazing — quietly acknowledge the wildfire context.

Photography by Joe Fletcher.

The living room of Pine Flat Residence at golden hour, where a lit fireplace set into a concrete chimney breast anchors the room as sunlight floods through floor-to-ceiling glazing on two sides. A leather lounge chair and ottoman, an arc floor lamp, and a low-slung sofa around a pale sculptural coffee table compose an interior that balances industrial restraint with considered warmth.

Photography by Joe Fletcher.

The primary bedroom of Pine Flat Residence at dusk, its sliding glass screen open to a timber deck where a single armchair faces a sunset panorama of valley and treeline. Reeded glass panels filter the last amber light onto the bedroom wall, the restrained palette of oak, white linen, and dark steel lending the space a quietly meditative character.

Photography by Joe Fletcher.

The covered deck of Pine Flat Residence at golden hour, where a timber sun lounger faces an unobstructed panorama of forested ridgelines and distant valley. Warm-toned hardwood decking, a raw concrete soffit overhead, and a slender steel railing frame the view with understated precision, blurring the boundary between shelter and landscape.

Photography by Joe Fletcher.

Pine Flat Residence by Faulkner Architects at dusk, its illuminated interior glowing through the full-width glazing of the upper floor. The Corten-clad volume, darkened in the fading light, sits above its concrete plinth with quiet authority, the warm light within contrasting with the cool blue of the California twilight and the dry hillside scrub below.

Photography by Joe Fletcher.

Off-Grid and Fire-Ready: A Corten-Clad House in the California Mountains by Faulkner Architects