I find it very interesting to see how many different methods people here are using for period of house.

To me it should be impossible for all those people to get things right.
If the method really does work, then it works by one formula, and not all these. It would be a pure coincidencce that a person using construction date as period for house would get good results just like a person using move-in or current period stars for their house, which is the same house! Therefore I do not believe that those two or even three persons/families would have the same success story explained by a completely different sets of flying stars - that would just be too inaccurate. This is why I think there MUST be one method preceding other methods for period of house. There must be one method that is MORE and MOST accurate when taking case studies of 100 or more that proves how to use periods for flying stars method.
To think logical about it, MHO and my deduction of thoughts would tell me that it makes most sense that the flying stars of each house always change with each new period. I say this because Qi is ever changing and not static.
When the house was first built is when the period chi entered the building. It you wanted to change this chi, you would need to remove all of part of the roof so that the heavens could then meet with the earth again and breathe new life/chi into the building.
This is what I find so strange to say about flying star method.
Even though Qi FIRST entered the building at some time back in the 30's or something - it would not stay static in the house. You would NOT have to remove the roof or windows for the ever moving Qi to enter your house... Qi is entering your house all the time, each and every day affecting you in new ways. Qi comes from all directions and it enters your house through all open windows and doors each and every day and is ever changing.
Those using flying stars method take into account that flying stars change each day, each month, each year and therefore should also change and be different each period.
This is how it is done in
XKLF method - and makes most sense to me I have to say.
Each period carries with it new influences on each gua of luopan. Just like every month and year also carry different influences on each gua.
Should be the same or similar in each and every method of
FS for them to be coherent and usable for all.