The dirham is pegged to the US dollar
AED has been pegged at roughly 3.6725 to USD for decades. So if you think in dollars, your purchase price is effectively fixed. If you earn in euros, pounds, rupees or anything else, your real cost moves with that currency against the dollar — not against the dirham.
FX moves between deposit and completion
A Dubai purchase spans weeks: deposit on the MOU, then the balance at transfer (or instalments for off-plan). If your home currency weakens against USD in that window, the same dirham price costs you more at home — and vice-versa.
Off-plan stretches the exposure
Payment plans run over months or years. Each instalment converts at the rate of the day, so a long off-plan plan carries far more cumulative currency risk than a ready-property purchase that completes in weeks.
Transfer mechanics still apply
Funds reach the UAE via international transfer or a UAE account; banks/brokers want a clear, traceable source of funds. Currency conversion is separate from — and on top of — the transfer mechanics themselves.