How you should build your bird house depends on the bird species, your intention behind it and the location. If you have chosen a bird feeder with a stand, you should make sure it is stable. It is also important to have the right food and plants next to your bird feeder. The same applies to your balcony or terrace.
Once you have found out that tits prefer to eat from branches, you will soon realise that a few twigs around the outside won't hurt. Orientation is also important. A nest box should always be placed at least 3 metres from the ground to be protected from predators. It should also not be exposed to all weathers and especially not to permanent sunlight. When hanging your birdhouse, simply tilt it slightly forward and make sure it faces north-east - away from the weather.
Only place your bird house when winter sets in and it gets cold, and remove it again before spring. If you leave it all year round, there is a risk that the birds will forget how to forage for themselves.