20 William St

A modest five-story prewar co-op completed in 1939, this low-rise brick building reflects Tudor-influenced residential architecture and a small-scale, garden-oriented layout. Units are predominantly one-bedroom (with occasional two-bedroom sponsor offerings) and retain high ceilings and many original details alongside contemporary updates such as renovated kitchens and bathrooms. Interiors commonly feature hardwood floors, built-in millwork, eat-in or galley kitchens with stone counters, generous closets, foyer entries, and double-vanity baths in larger layouts. The building provides elevator access, on-site laundry, a live-in superintendent, and dedicated storage and bike-room facilities. Outdoors there is a half-acre communal rear lawn and paved courtyard with patio, BBQ area and opportunities for box gardening—shared spaces that support resident gatherings and practical outdoor use. Pet rules are permissive compared with many Westchester co-ops (typically one dog with weight limits and generally pet-friendly policies). Parking is not a defining feature; the property’s walkable Fleetwood setting places it a short walk to Metro-North commuter rail, shops, and local restaurants, making car access and major parkways readily available. Maintenance structures reflect co-op ownership with occasional STAR credits applied to common charges and sponsor units offering streamlined purchase terms without full board approval.