Inserting your search you will be always noticed on the pieces of real estate that interest to you: the system will send an email to you everytime an offer similar to the inserted search will be available. The relative data you inserted won't be communicated to the real estate agencies, will be same you to contact the agency in case a piece of real estate you are interested in is made available. It is advised not to insert all the parameters, otherwise you could not receive some offer : as an example it could be available the 4 spaces is for sale in the zone that it interests to you, but the price could be not exactly what you asked for. In particular it is not advisable to use at the same time price and meters you squared or the number of spaces. For offices and peasant some search parameters are disabled.