Does Dubai property always go up in value?

No. Dubai's market is cyclical, not one-directional. Prices dropped roughly 50% after 2008 and slid through much of 2014-2020 before the 2021-2024 boom. Appreciation depends heavily on area, developer, timing and supply. Treating 'it always goes up' as fact leads to overpaying at peaks. Study the cycle and specific location, not the citywide headline.