A Unique Eco-Efficient Retreat on 1.8 acres next to Willow Creek in Crestone. This private one-bedroom lofted home sits secluded with natural buffers, offering outstanding fire resilience and energy efficiency. Nestled into the landscape with long views and no neighboring rooftops, it opens directly to protected greenbelt. Willow Creek flows just beyond the back line through mature piñon and juniper.Constructed with RASTRA insulated concrete forms, the high-mass, non-combustible walls deliver superior fire resistance, soundproofing, and thermal stability. Stucco exterior and metal roof complete the low-combustible, durable envelope. The hexagonal floor plan is bathed in natural light from three south-facing low-E windows, maximizing passive solar gain. Sunlight warms the polished concrete slab thermal mass, retaining heat into the evening. On 15° winter days, the radiant-floor boiler often stays off until late evening (sometimes 11 p.m.), thanks to excellent insulation, solar design, and mass performance.Heating comes from a high-efficiency Buderus boiler and LogaLux tank for hydronic radiant floors and domestic hot water, with a separate loft loop. A Jøtul wood stove provides attractive backup heat. A massive central mast supports heavy timber vigas in a spoke-like arrangement, carrying the loft with significant overbuild. A clean, gravel-lined crawlspace allows easy access to systems.The cul-de-sac lot features no through-traffic, deep 60 yd setback, and direct greenbelt access. Enjoy stunning sunsets over the SLV to the San Juans and dramatic Sangre de Cristo peaks to the east.Extras include a TREX deck, quality storage shed, and fire mitigation by Baca FD members for a strong fire defensible space.This rare property combines fire-safe engineering, passive solar efficiency, seclusion, and serene mountain living. Fully turnkey and guest-ready, with negotiable furnishings. Ideal for immediate hosting if desired. Don't forget to check out the Matterport tour