Is Zakat obligatory on a villa that was sold after the intention to sell it for investment, then the intention changed to owning a house and land?

If the villa is for personal use (not for trade), or if you acquired it without an exchange, such as through inheritance, then no zakat is due on it, even if you intend to sell it. However, if you sell it for cash, then zakat becomes obligatory on its price if a year passes while it reaches the nisab by itself or when combined with other cash or trade goods. The same applies if you sell it for goods and intend to trade with them.