Question regarding Housing

[Claviusnex]

my question is, if someone is to sell me their large house for lets say 200M, would that be against tos? where is it writen please

Is the house a private house or an FC house?

If it is a private house there is no way to facilitate a sale from one player to another. You could give gil to your friend but still will not own the house. When a plot is abandoned the house and all of its items are removed so all that remains is an empty plot. To buy the plot you are in a race with other players to see who can click the lot plaque first after it becomes available for sale. To make it even harder no one knows after a house is abandoned when it will become available for purchase from the system so you would need to camp the plot to have chance of winning the click race.

If it is an FC house and your friend is the FC Master they can make you the Master and you will then own the house. In this case it is up to you whether you want to donate gil to them or not.

there are some discords where ppl are selling houses and relocates, how they do it?

I believe those are usually FC houses where RMT sellers buy multiple FC houses then sell them to other players by making the purchasing player FC Master. There is no guarantee they will fulfill their end of the bargain though.

There are also RMT people who for a price will ask for your userid and password to setup housing bots on your account in order to buy a personal house. This breaks multiple areas of TOS. Here it is any one's guess whether they will steal your account or get it banned for using bots. Even if they are legitimate you should never let anyone else know your userid or password (a TOS violation in itself should you do it knowingly).