There are quite a lot of new villas in al khor. I'm not exactly sure how much the rent is, but roughly 7k a month is reasonable for a small 3 bedroom villa in a compound. Another option is to rent in al-dakhira which is 10mins from al-khor with cheaper rent. Al-dakhira is actually closer to al khor community than al-khor, but doesn't have any facilities except for a small Meera (shopping centre).