There IS/ ISN'T a kitchen in my house.
IS
How many rooms are there in this house?
There are six rooms.
There AREN'T / ARE three bedrooms in my house.
AREN'T
How many rooms are there in the third floor?
There are three rooms.
There ARE / IS a laundry room in my house
IS
There is TWO BATHROOMS / A BATHROOM in my house.
A BATHROOM
There IS / ISN'T a dining room in my house.
ISN'T
How many rooms are there in the first floor?
There are two rooms.
There IS / ARE a garage in my house.
IS
There IS / ISN'T a garden in my house.
IS