Is zakat obligatory on a chalet that is not ready for use or rent, was purchased six years ago for 35,000 pounds, and its current value is 50,000 pounds? And if it is obligatory, what is the amount that must be paid?

If the chalet is for private use or for rent, zakat is not obligatory on its value. Rather, it is obligatory on its income if it reaches the nisab and a full year has passed over it. However, if it is prepared for sale, it is appraised every year and zakat becomes obligatory on its value if it reaches the nisab, and its amount is a quarter of a tenth.