Hi Pete - as Steven said - it's surprising just how big the grip forest and light surfaces can get to light and photograph a small item - especially shiny and round ones. I shoot in a 3.8m by 4.5m (5.5 if I shoot from the small balcony if it's not raining) space. The ceiling is 2.1m. About the same size as a garage - and with the shelving, about as wide. It does work, but it does present some difficulties. On many occasions I've had to completely rethink the whole setup to add one more element. Things like having enough room for the counterweight end of a boom arm, and having enough space for the light to fall off into, and generally getting distance between lights, diffusion panels, objects, background and camera are things that impact you in a small space. Paint it black/dark grey (or use black cloth to cover the walls and floor), invest in grids for all of your reflector dishes and softboxes, and lot of black card or foam-core board to block and absorb stray light.. Like Trevor - I often end up with a less than ideal working height for the table - as I need to fit more in above the subject.
Also useful, especially if you work alone as I do, is to shoot tethered and use a remote trigger. This way you don't have to move back and forth from the camera position to the light or other element you're busy adjusting, which is always a very deliberate and considered thing in a small space. When the position of something is really critical, I find using live-view on the big screen is invaluable - using the modelling lights I can move and focus lights and see the camera's view as I do it. A foot, or mouth operated trigger (radio trigger in a plastic bag with padding) or voice control is also if you have both hands full (I use Control my Nikon for the voice control, which allows me hold a light and maybe a reflector too to try out a position before putting stands in place. I just say "shoot" to take the picture). All of this means less moving about with all the potential for knocking into things in a small crowded space.
Here's some examples of the sort of setups I build in the space:-
View attachment 290269View attachment 290270View attachment 290271
View attachment 290272View attachment 290273
View attachment 290274View attachment 290275
View attachment 290276
Remember to leave room for you to get out of the room