I have a SW1 house that is facing an open field and a river. It was built before deeds were created, so likely around the late 1800's making it a period 1 house initially. An addition was added to the back sometime in the early to mid 1900's. When I moved in, I considered it to be a Period 8 house because they had renovated the entire house. Upon moving in, between 2021 and 2025 I have completely remodeled the house (moved the kitchen to NE1, added a sliding door to the back at N2, added a new roof, took out the floor down to the dirt in the back portion, took down a wall, remodeled the attic into a bedroom, painted everything, dug out the back of the house for better water drainage, etc) and am wondering if I would now consider it a Period 9 house given the extent of the work that has gone into it. In Period 8 it had the Sum of Ten and I felt like I could feel it, but I am also open to that having been a placebo effect.