The biggest one involves relying on the seller's lawyer. The developer is paid on completion, which is a different interest than looking after your interests. Your own legal adviser costs a small fraction of the purchase and remains the best protection.
Signing land in montenegro for sale a language you do not speak comes a close second. A sworn translation is inexpensive set against what is at stake. Verbal assurances carry no weight once a dispute starts — the document governs.
Committing to an unbuilt project blindly has wrecked many budgets. Before any payment, review the developer's completed projects, the building permits, and the guarantees on staged payments. Projects running behind schedule are normal even with reputable builders; unfinished projects are the exception but much more damaging.
Ignoring the exit is a quieter mistake. Any property for sale in setubal will one day be sold, and the resale market determines the price. A home attractive only to a narrow group is harder to move in a weak market.
Finally, a lot of buyers misjudge the ongoing obligations. Annual declarations can be required even when the home sits empty, and late filings lead to charges that accumulate quietly. Setting up professional help from the first year avoids most of it.