Welcome to 3345 15th Street, a move-in ready, custom home in the heart of North Boulder. Just steps to the Community Gardens, Ideal Market and open space/trails, this thoughtfully upgraded 4-bedroom (+ office), 4-bathroom residence offers 3,300 finished square feet of comfortable living space and combines modern functionality with the perfect north Boulder location and lifestyle. Upon entry, the main level features a vaulted-ceiling great room, hardwood flooring, a custom concrete gas fireplace and an oversized glass sliding door that flows to a stamped concrete patio and lush backyard perfect for entertaining. The chef's kitchen includes a Sub-Zero refrigerator and wine chiller, Wolf dual-fuel range, Asko dishwasher, honed granite countertops, concrete kitchen bar height table and an adjacent dining area surrounded by glass. A rare main floor primary bedroom en-suite, powder room with a custom concrete vanity and a spacious home office with French doors completes the ideal main level living area. Upstairs, the loft/flex area offers built-in workspaces, vaulted ceilings and access to a full bathroom and two bedrooms that are fully soundproofed. The finished basement expands the home's versatility with a large guest bedroom and private 3/4 bath, a recreation/media room, a spacious unfinished storage area, and a hidden "secret room" tucked behind a custom-built moving bookshelf. A newer dual-zone HVAC system and a whole-house cooling fan keep the home comfortable year-round. The oversized 668 sqft 2.5-car garage is insulated and complete with high ceilings - perfect for your larger vehicles and toys. This turnkey property delivers a rare combination of craftsmanship, design and convenience in one of Boulder's most desirable neighborhoods.