The base price of Riviera residences includes complete shell including entrance doors, windows, facade finishing and roof, engineering systems, and interior partitions. Because of the great variation in possible cost, the base price of Riviera residences does not include furniture, light fixtures or final finishing works, including final floor and wall finishes, interior doors, kitchen furniture, tiles, stair finishings, switches, and electrical outlets. These aspects of the construction work are chosen by the purchaser with the help of the architects and are installed by the Developer at cost plus a reasonable charge for labor and during the basic construction period.