Hi Molly I think you will find that this is mostly the case, we bought new 2 years ago and had to install solar panels, water storage tanks etc, it seems bizarre doesn't it that you buy a new house but have no means to even flush the loo!!!
I would never but new again, by the time you have sorted your water system out and maybe put in mossie nets and security metal work you can add another 5,000 TL to the asking price at least!