Property value growth is based on demand outstripping supply. That's why prices in Chelsea are so high, everyone wants to live there and there's no more building going on. Also, people will move into old houses for exorbitant prices and do them up.
In Dubai - can you ever see demand outstrip supply? Of course not.....they'll just throw up another Palm, another Ranches, another <insert word> City.
Also, once blocks get older, their value will decrease and people will want to live in the next big thing.
Be careful.