Hello all. I’m Chris and am from Oxfordshire in the UK. The wife and I recently bought our first home and after looking for garden ideas I came across this website. So far I’ve done nothing but browse and dream for the past couple of months but I’m now ready to start my build. I’ve bought the plans from the site and have an idea of how I’m going to progress the build but the main question I have is attaching the base to a pre-existing building.

As you can see from the picture, the area I’m looking at putting it is next to my garage and the rear of another garage. When I place the concrete base I will be below the damp course of both buildings but do I need to leave a gap at all, either the base or the shelf where the oven sits?

Thanks for your time and responses.