The Vanderbeekers by Karina Yan Glasser

The Five Vanderbeeker kids live in the downstairs apartment of a big brownstone. Their life is happy and peaceful. They may not have much money but it doesn’t matter too much to them. Then one November day they get the worst possible early Christmas present, the family are being evicted. The kids set out on a mission to convince their grumpy landlord, who also just so happens to live above them, to let them stay. They try everything: pastries, finding out more about him, even a homemade gift – which gets rejected. Just when all hope is lost they succeed.