There is no written approval, just go get the form at the branch office when told to do so. If rejected they will call you, else if approve, their contractor will call you when they want to go up. you need to get a number lock for your flat and write the pin on the form. Screeding is done after you collect your key, remember dont lock the gate and main door with keys after you submit your form, just lock with the number lock using the pin you had written on the application form.