The bathroom aren't very clean today.
aren't → isn't
There isn't any plants in the kitchen.
isn't → aren't
There is not enough storage spaces in the house.
is → are
There am many decorations on the mantelpiece.
am → are
The paintings on the wall is very old and needs replacing.
is → are
Is there any books on the study room shelf?
Is → Are
The carpets in the guest room isn't clean.
isn't → aren't
Are the lights in the hallway always turn on?
Are → Do
The curtains in the bedroom is too short.
is → are
The sofa am very comfortable in the living room.
am → is
Is the dining table and chairs matching in the dining room?
Is → Are