Have not done one myself. These seem very work and time intensive if you want to do them really well. And if you don’t do them well, they might actually drive customers away instead of attract them.
Some folks who do a lot of these shoot very wide stills with a very high resolution digital still camera, then just throw some panning and zooming moves on a montage of stills and call it done. Fast and economical, don’t know that it really sells all that well. Lighting is certainly easier to do, just a flash and maybe one slave flash to get each room.
Part of what makes those HGTV home improvement shows look so nice is the extensive and careful/artful lighting they do for the “after” shots. There is extensive use of kookaloris and pattern generators, plenty of accent spots and flags used here and there to add subtle drama and focus and make the colors and patterns ‘pop’. That plus they often use jibs to move the camera dramatically. I doubt you can do the same for eight homes a day every day to feed the beast of those repeating-loop real estate shows on local cable sales channels.
For exteriors, a nice high-angle shot works wonders to show the yards and other features while hiding a multitude of sins. If you are doing a lot of this, look into renting or buying or making a version of the “hi-Pod” monopod. (google it)
For a multi-million-dollar property, you can get aerials done using kites, RC choppers or tethered robotic camera balloons or you can shoot stills and use a photogrammetric modeller to create a 3-d model you can rotate in space and virtually inspect from all angles.