Firing at home is entirely normal and it is an installation question before it is a pottery one. Power, floor, clearance, ventilation and, if you rent, permission all need answering before a kiln is ordered, because every one of them is easier to solve on paper than with a kiln already in the hall.
Power
A plug-in kiln runs from a standard socket and can be used the day it arrives. Anything larger needs a dedicated circuit installed by a qualified electrician, and the cost and feasibility of that depends on your consumer unit and the distance from it. Get that answer first, because it decides which half of the market you are shopping in.
Where it can stand
On a non-combustible floor that will take the weight, with clearance around it as the manufacturer specifies, away from anything that can catch, and not in a bedroom or a space anyone sleeps in. A garage, an outbuilding or a utility room is typical. It also needs to be somewhere you can ventilate while it fires.
Ventilation and fumes
Firings give off fumes, particularly during the bisque as organic material burns out, and the room gets hot. An openable window and a door, or a proper extraction hood, is the requirement. This is the part people underestimate, and it is the reason a kiln in an internal cupboard is not an option however well it fits.
Insurance and tenancy
Tell your insurer, and if you rent, ask your landlord. Neither conversation is usually difficult and both are much easier before installation than after an incident. A kiln is ordinary equipment used by a great many people at home; it is simply not something to install silently.
Questions people ask about home kiln
Can I have a kiln at home?
Many people do. It needs the right electrical supply, a non-combustible floor, clearance, ventilation and, if you rent, your landlord's agreement.
Can a kiln go in a spare bedroom?
No. It should not be in a room anyone sleeps in, and it needs ventilation and clearance that a bedroom rarely provides.
Do I need to tell my insurer?
Yes. It is straightforward to arrange and far easier to do beforehand.