Copy of the 'Contract of Sale' you will be asked to sign when you purchase. A form with the letters 'TASA' on it is merely a receipt showing that an application Fee has been paid - NOT that an application was actually made. The Rental Contract shows what the existing tenant's rights really are, and whether he is allowed to 'transfer' the rental contract. In fact, such rights are quite rare, and under Spanish Law, the Landlord must be informed of the sale and may have rights to increase the rent and take a percentage of the 'Trespasso'. If it reveals you are going to have to sign a new rental contract, try to negotiate a good rent.
High rents are the biggest single business killer today.
If asked for more than 3 month deposit, think carefully as you will almost certainly lose your deposit anyway if you are forced to cease trading later on. The rest of the papers will confirm names and existence of the various contractual liabilities When you have satisfied yourself on the exact details of the sale, you should ensure that the whole transaction is notarised. This will be handed over during the exchange at the notary office, where the seller will be handing over the necessary documents to formally transfer ownership to yourself. Make sure the town hall will allow you to use the chosen premises for your intended activity. Running a Tenerife Business.