Site plan

Here's the plan for the site, showing the new house superimposed on the existing house. The front face of the new house, excluding the porch, is approximately in line with the existing.

The biggest change is the new foundation, although about the same 25' width as the existing, will be located 6' further south. If you look at the current house from across the street, you can see this move makes visual sense. It also makes the landscaping easier on the driveway side, where there's a fairly steep pitch down to the driveway, and on the southwest corner, which is where the back door will be.

Even on the narrow lot, all sides are well within required setback dimensions.