When our family became short of space at home our solution was to build a luxury tree house in the garden. The tree house is built into a spruce tree six metres above the ground.It has one main room , a bedroom and a balony running around two sides." Garner is so happy 40 with this practical extension to his home that he thinks he can convince more people of the benefits of living in the trees.He wants to set up his own enterprise making more of the deluxe tree dwellings, saying, "Tree houses are airy, secure and comfortable for people who suffer from hay fever or a fear of heights