In very broad terms, there are three main types of lifts. The first is hydraulic. It takes up quite a bit of space in your home and requires a machine room for the equipment that runs the lift. If your home is a new construction, then it is a little easier to plan the space needed for that type of lift.
The second type of lift is referred to as a traction lift or MRL (machine room–less) lift, and as the name implies, it does not need a separate machine room. It works by sliding up and down a track with a counterweight. If you are retrofitting, then this type is a better bet. It still needs additional space above the top of the lift to house the equipment that runs it.
Although you don’t have to build a shaft, so this is a pretty easy thing to install, you do need to have wide enough doorways to get the tube into your house. It requires a 99-centimetre-wide opening to go through, and most doorways are about 91 centimetres or less.
Another important add-on is a telephone. Since we don’t always carry our mobile phones around with us when we are at home, I think any lift should include a phone for emergencies.
This design looks like it was part of the original house plan. If you are trying to find a spot in an existing house and don’t want to make it look like you crowded an lift inside, consider building a shaft along the exterior of your house with the doors opening into the home. A 1.8 metre by 1.8 metre addition could be enough, and it would let you preserve the look of your interior.