[DRIFT_HUNTER]

Apart from seeing that you check files for existing house (that's stupid) i can see that you will always return valid id ( new id = (1); )

Also you start counting houses from 1, while they should start from 0. Every array start from 0.

Код:

for(new loop = (0), provjera = (1), Data_[64] = "\0"; loop < len; ++ loop)

That loop var probably has to be less then len variable, since you start from loop from 0. Also you should return some invalid id like -1 and check in command if returned id is actually invalid (not file).