I can't reply in the message (I'm spanish guy) so i can talk u in english if u prefer..
The Houses in Spain are not expensive but not cheap too.
The great thing its that, a new "Bank" created by the GOV that has all the "wrong actives from the economy" are selling the houses by 40% of their sale's price.
I have seen a lot of "houses in blocks, around 20.000" in "Galicia Spain's North near to a beach,
Chalet's being sold only for 20.000E!!!! When his og price was more than 100.000
A lot of banks, Santander (And other banks, had a lot of houses waiting to being sold) by 40% less than Original price.
So u can try seeing in the beaches you want (Valencia-Malaga-Cadiz-Barcelona-Mallorca-Canarias) and maybe u can contact to "banks" / Santander / caja Rural / BBVA they have a lot of promotions for houses too cheap
So take a look ^^