Located on one of the most prestigious streets in Estoril, this house stands out for its excellent sea views and potential for appreciation. Built in the 80s, it is in excellent condition and offers an elegant and functional environment. The property has a large living room, dining room, office, kitchen, a guest bathroom and four bedrooms, one of which is a suite. The other rooms are served by a full bathroom. Complementing this property is a garage with capacity for two cars, a basement with a service area and a spacious storage area. Located on a plot of 1,208 square meters, this property has a Prior Information Request from the municipality of Cascais (PIP) approved for the construction of approximately 725 square meters of above-ground residential floor area, in addition to an underground garage. With a privileged location and stunning sea views, this house represents an excellent opportunity, both for your own home and for a real estate development project.