Many properties in the area have tapu but no living permission - at one time it was not really that important because you can live in the property etc - but in more recent times it has tightened up considerably and it is very difficult to sell (or in precise terms find someone who will sell) the property - as ultimately it will need to be done. Another reason that a large number of properties don't have it is that it is not cheap and builders don't do it. The buyers get a tapu but not the "final tapu" with living permission/habitation licence. Sadly, that means that something you paid for hasn't been delivered and it is most likely that you will have to find the money to get it -and we are not talking small money - we are potentially talking thousands of pounds.
I started a topic on the old board saying that the one most important thing in buying an apartment these days, and that is the cross in the kat mulkiyeti box (showing full permission to occupy the building). I should also say that sometimes the box isn't crossed but the kat mulkiyeti can appear in the typed text on the tapu. If it has neither, it doesn't have living permission. To be clear, it doesn't follow a property without living permission was illegally built.
To answer the question - I think it would be extremely difficult for a non-Turkish speaking Brit to achieve. I'd recommend using a solicitor - contact me if you want a specific recommendation.