Garden rooms are such a good idea for so many reasons there defiantly on my xmass list . Great value for money is just a start , they offer you a different aspect of living outdoors an escape at the end of the garden . The technology of new products can water proof and retain heat so efficiently that it can make these a welcome retreat 24 7 365 days of the year ! As long as you keep them below 2.4 mtrs and the floor size below 30 sq mtrs no planning is needed. You can choose your own design and measurements to suit your garden , windows and doors to suit your views , optimising natural light . Doors and windows are double glazed with toughened glass and high security locks so normal house insurance policy covers all .