Part of the house

Dear Master Cecil,
I live in a double storey terrace house. At the ground floor, my backyard was extended by erecting a wall on the left and right covered with awning, but the back is only covered with 2 feet concrete wall and grills up to the awning level. I didn't do any hacking at the back when I extended the backyard. Which means all the original structure and backdoor to the backyard remains. Whether the backyard is considered as part of the house when we apply eight mansion/flying star feng shui? I use the backyard as wet kitchen and hanging wet clothes.
In the front part of my house, my car porch is located here and attached to the house without wall & door enclosed. Whether this car porch will be considered as part of the house when applying feng shui analysis.
TQ & Regards,
Fiona