A unique opportunity to build your dream home in a peaceful, natural setting. A 657 m² urban plot is available in the El Balcó residential area of ​​Castellar del Vallès. With an approximate 16% slope, it's ideal for developing a modern architectural project that takes advantage of the terrain's topography and offers views of a protected forest area. Total price of the plot + quoted house (without a pool) = €360,000 The plot includes a preliminary design for a contemporary prefabricated house with an approximate area of ​​110 m² distributed over two floors, perfectly adapted to the natural slope of the land. The proposed design includes: * A first floor with the main entrance, featuring a studio-style room (which could be converted into a laundry room or utility room) and an accessible bathroom. This floor also provides access to a spacious 17 m² balcony with unobstructed views. * * Ground floor with a sleeping area comprising a single bedroom, a double bedroom, and a master bedroom, plus a full bathroom. * Living area with an open-plan kitchen featuring an island, integrated into the living-dining room, with direct access to a 19 m² garden-level terrace. * An outdoor porch, ideal for enjoying the natural surroundings. The planned house has a flat roof and a surface parking space. An excellent option for both self-builders and investors looking for a plot with a pre-designed project, in a well-established residential area, easily accessible and surrounded by nature. If you would like to receive a detailed preliminary project estimate, please do not hesitate to contact us.