Welcome to 21 Barrier Mountain Drive, a beautifully renovated mountain home set on a double lot of over 10,000 square feet, where extensive, thoughtful improvements have created a property that blends character, comfort and exceptional efficiency. The main level offers three bedrooms, a full bathroom and bright, inviting living spaces that take full advantage of the surrounding mountain views. Beyond the attractive finishes, this home has undergone significant upgrades to its building envelope and energy performance, including new exterior siding, upgraded house wrap and air sealing, extensive Rockwool exterior insulation, foundation insulation, attic air sealing and insulation upgraded to R60. A 13kW solar system, upgraded 200-amp electrical service and numerous additional improvements further enhance the home's efficiency and functionality. With all this work, this home is EnerGuide rated 2.5x better than a typical new home for exceptional efficiency. The lower level features a one-bedroom, one-bathroom in-law suite with toe warming electric radiant in-floor heat and enhanced acoustic insulation, providing an excellent space for extended family, guests or additional living flexibility. Outside, the expansive double lot, gorgeous mature landscaping and rebuilt TimberTech composite deck create a private mountain setting with wonderful outdoor spaces for relaxing, entertaining and enjoying the views. Completing the property is an impressive oversized garage built in 2023 with a full foundation, insulated walls and ceiling, 100-amp electrical service, CAT6 wiring, utility connections and rough-in for in-slab heat. Designed with future flexibility in mind, it was built specifically to accommodate addition of a second floor/suite (roof can be lifted and wired with most wires in the walls rather than ceiling) and there is also Air BnB potential. With its extensive renovations, remarkable energy upgrades, mountain views, oversized double lot with back alley access for a parking pad (for RV/trailer) and versatile living spaces, this is a truly special property that has been carefully improved for years of enjoyment.