No, it is not. Vacant is an adjective that usually means empty (unoccupied).
vacancy
It is an adjective. To use it as an adverb, you would add -LY (vacantly).
There is no direct adverb for the noun vacancy (state of being empty or unoccupied). While the related adjective vacant has the adverb form vacantly, the adverb has a different connotation (lack of attention or awareness).
vacant ready
The squatter was living in a vacant dweling. Hello, I'm searching for a vacant dwelling. Is that vacant dwelling condemned?
vacant means empty for example: "my mind is so vacant."
vacant clean
Yes, vacant is an adjective.
vacant
Vacant means empty. A house with no furniture and no people is a vacant house.
She couldn't erase the vacant look on her face. The hotel had three vacant rooms. Vacant homes were spotted in various places in the neighborhood.
vacant room is the room is ready for occupancy while vacant dirty the room is dirty and not ready for occupancy.....