37-39 Farrer Road Mount Wilson

Tucked within five acres of untouched rainforest in Mount Wilson, KASA Cabin is an architecturally designed, fastidiously crafted home that harmoniously integrates with its environment while showcasing exceptional attention to material detail.
Developed slowly and deliberately over several years, this one-of-a-kind residence is a compelling example of what happens when design vision and craftsmanship unite in service of sustainability and beauty.
Originally an overgrown clearing within an endangered Wet Sclerophyll Forest, the site was carefully chosen following detailed solar studies and a commitment to preserving the surrounding landscape of towering eucalyptus and lush fern understorey. The home's positioning optimizes passive solar performance while protecting the ecological integrity of the land.
The result is a compact, gable-roofed retreat that exudes warmth, intelligence, and restraint. At its heart is a dramatic double-height space spanning the kitchen, dining, and living areas, anchored by substantial rammed earth walls that provide thermal mass-absorbing warmth during the day and slowly releasing it overnight.
Large north-facing glazing invites the low winter sun, while deep eaves shield the interiors from the intense summer heat. Strategically placed operable windows ensure effective cross-ventilation, reducing reliance on mechanical cooling.
To the northeast, the main bedroom is perfectly positioned to capture the morning light and features a walk-in robe and ensuite and it should be noted that both bathrooms have underfloor heating installed.
To the northwest, a covered outdoor terrace with a built-in fireplace offers a warm, elevated perspective over the surrounding forest-ideal for sunsets and stargazing. Upstairs, two additional bedrooms-one playfully accessed via a cargo net-provide thoughtful accommodations for family and guests.
The home's interiors are flooded with soft, natural light, thanks in part to its raked ceilings lined with compressed fibre cement sheets, which help diffuse sunlight throughout the space. The kitchen, finished in muted tones that echo the surrounding bush, reinforces the calming, cohesive palette. Carefully considered sight lines and window placement make the home feel expansive despite its modest footprint.
A standout feature of the home is its use of locally sourced materials. Much of the timber joinery-including wardrobes, slatted detailing, and sliding doors-have been crafted from trees felled and milled on site, reducing environmental impact and deepening the home's connection to place.
KASA Cabin is a rare opportunity: a low-impact, high-integrity home that balances comfort, aesthetics, and sustainability with quiet confidence. Whether you're looking for a "lock-up and leave" weekend escape or a serene permanent residence, this is an inspiring and beautifully resolved example of architecture working in harmony with nature.
Everyone should come have a look as homes like this are a rare and wonderful treat!
A Rare Opportunity
KASA Cabin is more than a home-it is a study in place-responsive architecture, self-reliance, and material honesty. Compact in footprint but generous in light, space, and thermal comfort, this is a rare opportunity to own a Blue Mountains retreat that is at once refined, rugged, and rooted in its environment. Whether as a permanent residence or an occasional escape, KASA Cabin is a singular offering for those seeking meaningful design and off-grid serenity.

• Three Phase Electric car Charger
• 100,000 Litre Rainwater Tank
• Heat Pump Hydronic Heating System
• Double Glazed Throughout
• Passive Energy Design
• Contact Agent for a link to a more comprehensive Technical Sheet