Positioned in the heart of downtown Barrie, 139 Mulcaster Street offers a rare blend of luxury, privacy, and entrepreneurial flexibility. This expansive ravine lot spans approximately 0.58 acres and backs onto lush green space, creating a serene urban retreat just steps from the city’s vibrant core. With over 8,000 square feet of total finished space—including a finished walkout basement with private entrance—the property is ideally suited for multi-residential, boutique investment, or adaptive commercial use. Featuring seven bedrooms, seven bathrooms, and three kitchens, with multiple private outdoor living and dining areas. The backyard has a new 10ft fence that surrounds a gorgeous mature oasis complete with armour stones, gardens, and irrigation system. Upper and lower heated garages with epoxy floors, a state-of-the-art outdoor kitchen, and a separate nanny suite and workshop further elevate the offering. Zoned RM2, the site supports multi-unit residential use and opens the door to a variety of commercial adaptations, including wellness clinics, executive retreats, special events or boutique B&B operations. Whether you're an investor seeking high-end rehab or short-term rental potential, an entrepreneur envisioning a therapy, retreat or wellness space, or an organization in need of a private offsite venue, this property delivers unmatched versatility. Its proximity to downtown Barrie ensures access to amenities, transit, and a growing population base, while the natural setting offers tranquility and exclusivity.