The consultation and notification process can be quick and easy because porches generally fall into the category of a “Permitted Development”- as long as certain criteria are met. For the hard work allow four to six weeks once I’m hands-on cutting your frame. The time is divided between the laying-up, marking and cutting of the frame- which is done in the yard- and the on-site preparation, frame raising, roof covering and finish detail. The ratio of work in the yard to work on-site will vary with the type of structure, the site conditions- and the weather to some extent.