I would like to publish a series of posts on my build process, including cost breakdowns, because I know there is interest after seeing some similar posts (http

I would like to publish a series of posts on my build process, including cost breakdowns, because I know there is interest after seeing some similar posts (https://news.ycombinator.com/item?id=30193899 https://news.ycombinator.com/item?id=30193899) Without knowing much about your project, a dormer add can get expensive because you are modifying the structural envelope of the home. although the new sq footage may be small, the building process is involved and risk is high because your modifying roof-lines, bearing walls etc. A dormer addition is not simple.