This might seem like a stupid question but for some people this is important, because not everyone knows about their kinky side so they can´t just leave them around the house! But you don´t want to stuff them in a corner, just like most of your clothes (that you value) you want to take good care of these fetish clothes. Because ripped fetish clothes might look sexy to you but not to me!
If you share your house with people that don´t know about your kinky side and prefer that they don´t find out then I would suggest to find a good hiding place for your fetish clothes. This doesn´t have to be a hole in the floor where you keep it but maybe a spot in your closet and put some casual clothes on top of them. Depending on the amount of fetish clothes you might want to have more than just one spot. Of course not all fetish clothing could be considered as weird, I mean some people wear leather pants in public so I doubt that this would raise any suspecion. But latex is usually the type of clothing that does kind of point towards a more kinky side.
Of course you don´t have to hide anything, if you feel confident enough to tell your family and friends about your kinky side then go for it! Just remember that not everyone is always that understanding and that this might have a negative impact on family and friends. I guess you know your family and friends best so you probably know if you can tell them or not, if you´re not certain you might want to investigate how they feel about certain kinky things. Being subtle is key here! If you think that they´re ok with it or don´t care then I doubt that you have any reason to hide your kinky side, but if they are disgusted by kink then you might want to keep your kinky side a secret. At least for the moment, especially if you share the same house.
But what if they do find the fetish clothes? I guess you could lie and say that it´s a costume for a party or Halloween (depending on the time of the year) but I don´t know how well that works and if you want to eventually be honest about your kinky side then you´ll have to admit that you lied at them first. So it´s really up to you, do you want to keep it a secret or do you want to be honest? It feels good to be open about such things, but I guess we all have our own feelings when it comes to what you want others to know and what not.