The biggest one is using the agent's recommended lawyer. The seller is paid on completion, which is a different interest than protecting the buyer. An independent lawyer costs a modest share of the price and remains the best protection.
Signing in a language you do not speak comes a close second. A sworn translation is a small expense compared with the purchase price. Verbal assurances carry no weight when the written text differs — only the signed text matters.
Buying off-plan without checking the developer has damaged plenty of plans. Ahead of a deposit, examine what the company has already delivered, the construction licences, and whether payments are held buy property in alsancak escrow. Projects running behind schedule are common even with reputable builders; stalled projects are less common but much more damaging.
Forgetting about resale is a quieter mistake. A home bought abroad will eventually be sold, and kragujevac buy the pool of future buyers matters. A unit with no local demand sells slowly when sentiment turns.
Finally, a lot of buyers fail to plan for the ongoing obligations. Local tax returns may be required even in years with no rental income, and late filings lead to fines that grow over time. Putting in place professional help from the first year prevents most of these problems.