I’m do a two-storey addition (small footprint <500sqft) design and set of permit drawings for some friends who want to do most of the build themselves. There is an existing addition sitting on an existing concrete block foundation that will have to be removed (an old DIY job and an example of what not to do). I’m used to drawing for professional builders doing the building.
I’m wondering if people have any opinion about what is the best/easiest foundation for a DIYer to build. The husband has done other work around the house and does have a good attention to detail, but no experience building a foundation or any experience with concrete (as I understand it). I’ll make sure the drawings and specs are really clear and detailed, but still I’m wondering what the best system would be to start with.
Any and all suggestions/comments appreciated!