Swimming pool wanted!

Hi, hope the weather is not too good! I'm david and looking to purchase property in the Velez area. Should be over to view in a few weeks, but Almeria airport seems a nightmare to get to? Is it best to fly into Murcia and car it down?

Anyway, if we proceed to purchase there is a strong possibility that we will need a pool building. My understanding is that an 'above/on ground pool' does not need permission, but does that mean I could use the slopes on the land to build a pool with one end at ground level and the other 6 feet above ground without permission? Or is it better to get permission for in ground pool? And has anybody got an idea of rough cost (10000 euros is a figure I have been given)?

So, having got the pool and if initially I am only there 6 weeks of the year, is there a reliable tradesman who could check on pool regularly or who can empty and refill as required?

If anybody has any tips they want to pass onto me about anything relating to buying in Spain, then I'm all ears.

Gracias