The biggest one remains relying on the seller’s lawyer. The developer earns money only if the sale goes through, which is a different interest than protecting the buyer. Separate legal representation represents a small fraction of the purchase and remains the best protection.
Putting your name to untranslated contracts comes a close second. A sworn translation costs little next to the purchase price. Verbal assurances mean nothing when the written text differs — the document governs.
Purchasing off-plan on trust has ruined a great many buyers. Ahead of a deposit, look at what the company has already delivered, the building permits, and property for sale in alsancak the guarantees on staged payments. Delays are common with even the best developers; stalled projects are less common but genuinely ruinous.
Thinking only about the purchase is a quieter mistake. Any property for sale in sesimbra will eventually be sold, and the resale market determines the price. A unit attractive only to a narrow group is harder to move when sentiment turns.
Finally, side real estate a lot of buyers fail to plan for the annual paperwork. Tax filings can be required even in years with no rental income, and missed deadlines attract fines that grow over time. Setting up a local accountant from the start prevents most of it.