Build your dream mountain retreat in the highly sought-after Sunnyside neighborhood of Nederland. This rare, nearly 1/2-acre wooded lot offers the perfect blend of privacy, convenience, and connection to nature. Tucked away from the street and bordering peaceful Tom Riley Park, the property is surrounded by mature blue spruce & towering ponderosa pines, where deer & elk are frequent visitors. Enjoy an unbeatable in-town location within walking distance to Nederland Elementary, the Community Center, downtown Ned shops and restaurants, the farmers' market, and the Park & Ride to Boulder. Eldora Mountain Resort is just 10 minutes away, offering year-round recreation. Approved plans are included for a beautifully designed, energy-efficient home featuring over 2,000 finished square feet, SIP panel construction, triple-pane windows, advanced air purification, and two expansive decks to take in the serene mountain setting. The thoughtful design also includes an optional lower-level in-law suite with a separate entrance-ideal for guests, or potential rental income-as well as an attached 2-car garage and planned driveway. City water, sewer, and natural gas are available at the street through a nearby town utility easement (tap and connection fees required). Buyer will need to complete driveway grading. One of the last buildable in-town lots with full utility access, this exceptional property offers a unique opportunity to create a sustainable mountain home in one of Nederland's most desirable neighborhoods. Experience the best of mountain living-peaceful, walkable, and surrounded by nature.