[MerryDeer]

Hi,

How to check if all object parts is in area? like i'am checking like IsPlayerInArea, but objects are different forms, it's house furnuture system.

[Amads]

You can use https://sampwiki.blast.hk/wiki/GetObjectPos and check if X and Y are less/more than your choosen coords.

[PrO.GameR]

Is it possible? Yes, is it premade for you to use? (as you always expect) No.
Use ColAndreas' object sizes and streamer's IsLineInArea and IsPointInArea to create one.