Is zakat obligatory on plots of land purchased with the intention of preserving wealth to buy an apartment? Are car installments and association dues deducted from its value? Is it permissible to delay giving out zakat to distribute it personally?

Zakat (definition) is obligatory on land purchased to preserve capital. It is appraised at the end of the [Zakat] year, and one-quarter of one-tenth (2.5%) of its value is to be paid. Debts are deducted from the land's value if there is no other money to cover them, and Zakat is paid if the remaining amount reaches the nisab (definition). Installments received from an association are considered a debt and are deductible, while unreceived installments are not. Zakat becomes due immediately and must be paid in the country of the muzakki (the one paying Zakat), even by proxy. Otherwise, it must be paid as soon as it is feasible.