10/21/2026
📍661 Maxwell Ave, Boulder
5 Bed • 6 Bath • 4,687 SF • $4,975,000
✨ A Rare Find in Mapleton Hill! ✨
Historic charm meets modern luxury at 661 Maxwell. Remodeled down to the studs in 2020, this exceptional property features a beautifully updated main residence, a brand-new $1M ADU, and an additional 576 sq. ft. basement for storage.
Inside, discover exposed brick, hardwood floors, a chef’s kitchen with Wolf and Sub-Zero appliances, and a stunning primary suite with a private deck overlooking the foothills. Just moments from Mount Sanitas trails and Pearl Street, this is Boulder living at its finest—with exceptional flexibility and endless possibilities.
🏡 Main House: 3,048 sq. ft.
🏡 ADU: 1,063 sq. ft.
🏡 Additional Basement: 576 sq. ft.
Boulder, Colorado