This happened to me about 4 years ago. We were having some home improvements done at the time anyway and cut the bathroom in half and used that space to create me an office.
Bear in mind that you will make all sorts of savings financially and in terms of the time you have available to do the things you want to do if you work from home, eat out of your own kitchen and don’t have to commute.
Also, it’s not kids you have to worry about in terms of interruptions, it’s your partner. Might be a bit crowded with nowhere to escape to for both of you if you both work from home. Beware of familiarity breeding contempt.