3901 SE Saint Lucie Blvd

Mariner Cay is a low-rise, waterfront condominium community built in 1973 and organized primarily around two-bedroom townhouse-style units and flats. The development’s massing is largely two stories, with attached covered parking or carports and exterior storage spaces typical of garden-style coastal complexes. Units commonly include open living/dining plans, eat-in kitchens with islands or breakfast bars, primary suites (often on the main level in some floorplans) and a mix of remodeled and original interior details such as crown moldings, plantation shutters, high ceilings, built-in cabinetry and multiple bathroom configurations including dual sinks, garden or jetted tubs and separate showers. Many residences offer screened lanais, balconies or sun decks facing canals and lagoons, plus attic and utility storage in some units. Outdoors the community is organized around a marina and extensive waterfront access with individual docks or marina slips (dockage subject to availability and size limits), wide navigable channels with direct, bridge-free routes to the Atlantic via the inlet, and long water vistas lined with mangroves. Shared facilities include two community pools, a waterfront clubhouse with organized social events, tennis and pickleball courts, an exercise room, community grill areas and guarded gate entry. Building exteriors feature patios, porches, storm shutters, fences and common landscaping suited to a coastal environment. The association operates active HOA/POA regimes covering amenities, marina services, and common maintenance. Pet and rental rules vary by unit and should be confirmed with management. Located in Stuart’s Manatee Pocket neighborhood, Mariner Cay emphasizes an active boating and resort-like lifestyle with convenient access to waterfront dining, the St. Lucie Inlet and local marinas. The setting favors outdoor recreation, social club programming at the marina, and easy water-based commuting, while unit types and on-site parking reflect practical, modest-scale condominium living rather than high-rise luxury.