Welcome to 228 Alder Ln - a rare opportunity to build your dream mountain estate or renovate the existing residence atop the prestigious Pine Brook Hills community in Boulder. Set on a picturesque and secluded 1.5-acre lot with commanding western views of the Continental Divide, this property offers true Colorado mountain living just 15 minutes from Downtown Boulder. The existing residence spans nearly 4,000 sq ft. The main level features three bedrooms plus a spacious primary suite, along with an open, light-filled living room that frames sweeping Divide views and opens to a wraparound patio. The walkout lower level adds three additional bedrooms and flexible space for guests, offices, or recreation. A detached two-car garage, mature trees, and excellent separation from neighbors elevate the sense of privacy. Whether you're envisioning a custom build or looking to reimagine the current home, 228 Alder Ln offers unmatched views, tranquility, and proximity to Downtown Boulder.