The intervention by Architect Marques da Silva in Casa São Roque is notable for the type of materials used. Note the importance of stucco decoration throughout the House, with particular interest in the organization of the main room.

The Art Nouveau designs in tiles extend throughout the Palace. The contrast of the hand-painted tiles contrasts with the toasted yellow of the House, giving it a special beauty.

The building today maintains its original eclectic style, introduced with the remodeling by Marques da Silva, which was inspired by 19th century French historicism and Belgian art nouveau, having recently been rehabilitated under the supervision of architect João Mendes Ribeiro.

Casa São Roque is today a striking example of period houses in Porto, due to its architectural and decorative features, where its winter garden is a unique example.