There are two major issues with Plus Rooms. Firstly, they say they manage the project for you and they don't. We ended up speaking to the electricians and decorators ourselves as our project manage was on about 20 other extensions. If we ever do another extension we'd get a builder and project manager or just be prepared to do it ourselves as the Plus Rooms model doesn't work. Secondly, some the contractors they work with are utterly hopeless. If you do go with them and they mention Kovacs Construction as the decorators just say no. They are ridiculously cheap but completely hopeless in terms of quality of their work and customer service.