The Real Estate Agency Promosar, of Mr. Paolo Frisciata, works since 1996 on the North Sardinia offering full assistance for owners and buyers on all phases of negotiation for houses, apartments, villas, lands, rustics, also for renovations or service after buying. Real Estate Agency in Porto Cervo. For the purchase of properties we provide advice and administrative tax with direct access to databases of the Land Registry and the visure mortgage and with an extensive collaboration with colleagues in Northern Sardinia, we can provide a wide range of real estate can also operate as a property finder in Sardinia.