Glad to see you held out – it is a bit of a minefield buying in Marbella at the moment. There are many good legal developments and resales are the best route to go down as you can get some good deals now.
Off plan is ok IF you buy from someone distressed wanting to get rid of their investment quickly, again you can do a deal.
Just to set your mind at rest, the majority of valuers insits on a valid LFO now and will report any valuation without it to the bank who will in most cases refuse to lend anyway.
Good luck with your search