A detached garage is a perfect opportunity to boost your home’s curb appeal and functionality. Your garage, often considered a utilitarian space for vehicles and tools, holds untapped potential.

Question: My home is from the 1930s and has a detached garage. At some time the garage was extended for more room for a larger car. Now the whole garage is leaning to one side and the roof is sagging.

Looking up: Lauren Stinton and her husband turned their four-bedroom home into a five-bedder by adding a guest suite above their detached garage in Harpenden, Hertfordshire Credit: Photo: David Rose ...