Renting first is the low-risk option when you barely know the city. Neighbourhoods feel completely different in August and in February, and nearby construction only becomes obvious with time. A year of renting carries a much lower price than unwinding a bad purchase.
Buying becomes reasonable once the horizon is long enough. The costs of buying and selling are significant, so a short stay seldom covers them. The usual rule of thumb involves a horizon of several years before ownership pays off.
Borrowing locally shifts the calculation in both directions. Overseas purchasers frequently meet larger deposit requirements and shorter terms than domestic buyers. Where local lending is unavailable, the whole plan turns into tying up the entire sum, which reshapes the opportunity cost.
Renting protects flexibility. A shift in circumstances, personal circumstances or a regulatory change is easier to handle with a lease termination, rather than a houses for sale in carcavelos that takes months. In markets where prices move slowly, the ability to leave quickly has evora real estate for sale value.
Buying gives things a lease does not: protection from rent increases, the right to alter the property for sale in viareggio, and equity that can grow in value. In several jurisdictions, holding property also supports a residency case. The honest answer in most situations remains renting while you learn the market and buying afterwards.