Space, functionality, and meaningful improvements in one of New Haven's most sought-after neighborhoods. This 4-bedroom, 3.5-bath home features approximately 2,370 square feet of living space, including a spacious primary suite with a walk-in closet and full bath, generously sized living and dining areas, a dedicated laundry room, a finished lower level, and a detached two-car garage. Over the past few years, the property has undergone extensive upgrades focused on efficiency, comfort, and long-term maintenance. Improvements include energy-efficient double-pane windows, a heat pump HVAC system serving the second floor, upgraded electrical components, updated mechanicals, environmental remediation, drainage improvements, sewer line upgrades, a lined chimney with a wood-burning stove, and numerous interior and exterior enhancements. Additional features include refinished hardwood floors, updated lighting, refreshed kitchen finishes, modern appliances, interior painting and flexible living spaces that can easily accommodate today's work-from-home and multi-generational lifestyles. Located in the heart of Westville, residents enjoy easy access to Edgewood Park, Yale University, local cafes, restaurants, farmers markets, art galleries, and downtown New Haven. For buyers seeking a home where the major improvements have already been completed, 31 McKinley Avenue presents a unique opportunity to enjoy character, space, and modern efficiency in one exceptional package.