The costliest error is taking legal advice from the other side. The developer earns money on completion, which differs from acting for you. An independent lawyer costs a small fraction of the purchase and is money well spent.

Signing documents you cannot read comes a close second. An official translation costs little set against the purchase price. Assurances given by the agent mean nothing if the written contract says otherwise — the contract is what counts.

Buying off-plan without checking the developer has wrecked a great many buyers. Before paying anything, look at previous developments, the construction licences, and whether payments are held in escrow. Late deliveries are normal with even the best developers; unfinished projects are rarer but much more damaging.

Ignoring the exit is a subtler error. Every purchase has to be sold or passed on at some point, and the resale market determines the price. A sofia property with no local demand gonyeli real estate sells slowly in a weak market.

Last of all, many buyers fail to plan for the running costs. Annual declarations can be required even in years with no rental income, and late filings lead to penalties that accumulate quietly. Putting in place professional help from the start heads off most of these problems.