Depends on ceiling clearance, most 2 or 4 post lifts are 2.8metres tall or more.
Scissor lifts are more viable in an average modern garage that tend to have normal room height ceilings.
That was our challenge. We were advised that we wouldn't get permission for a ceiling height greater than 2.4m as it would be considered as a commercial development, and therefore not permitted in the AONB.
As it is, the scissor lift is absolutely fine to sit or kneel under. I haven't encountered any problem yet with access underneath, the scissor and rams are concentrated in the middle of the car, leaving full and open access to the engine and rear transmission/suspension. Access to the prop shaft is through the interior of the car, so I can't imagine any circumstance in which I'd need to get to the middle of the car. If I did, I'd probably just put a couple of trestles under the car and drop the lift out of the way.
