Tucked away on one of Boulders most beloved streets, this four-bedroom, three-bath home in the heart of Mapleton Hills Historic District blends timeless charm with modern comfort. Concord Avenue, only four blocks long, is the demarcation for the historic district. Originally built in 1902, the home has evolved gracefully over the years. A second story was added in 1986, and a 2001 remodel brought new life to the kitchen and added a spacious two-story addition. The living and dining rooms are anchored by a legal wood-burning cast-iron stove and surrounded by six original double-hung windows that fill the space with natural light. The updated kitchen is the heart of the home, featuring a cherrywood-topped island, modern wall oven and microwave, and space for gathering. Upstairs, the primary suite offers a peaceful retreat with a walk-in closet, deep soaking tub, and private balcony with serene Mt. Sanitas views – the perfect spot for stargazing beneath Boulders night sky. Two additional sun-filled bedrooms complete this level, one with Flatiron views and balcony. A second bath with sauna and laundry rounds out the floor. A fourth bedroom on the main level provides flexibility for guests. A main floor office has beautiful built-in shelves and another office is in the finished space above the two-car garage. The unfinished basement, accessed via automatic trapdoor, offers abundant storage and updated systems including a newer furnace, dual water heaters, and modern electrical. Outside, mature trees, lush landscaping, and wrought-iron gates create a private sanctuary. Enjoy gatherings or quiet moments on the welcoming back patio. The detached two-car garage and separate tool shed add more storage. Just moments from Pearl Street, Mt. Sanitas trails, and Ideal Market, this Mapleton Hill gem embodies historic Boulder living at its finest. Step through the gate and discover why it feels like home the moment you arrive.