Irregular plot of land and changing to period 8

[myfs_101268]

Dear Master Would appreciate your guidance on the following:- 1. Is there any cure for a plot of land that is wider in front and narrower at the back? The land is facing E and sitting W, so the whole of SW is missing. The house is built right in front of the land. This is because it is on a crescent. 2. My house was built in Period 5, how do I change it to a Period 8 house? Some books advised changing the whole roof, floor and front door, others said just change a few roof tiles. Some said do renovation (but how much renovation?) while a new age consultant said have a ritual/space cleansing to change the energy. I am confused. Please advise me. Thank you, with much appreciation