I built one of the cheapest observatories I've ever done in the UK, based on a 8' x 6' Argos tin shed (TSO). It worked so well, when I relocated to Belgium I brought it with me.
Took three weeks to "negotiate"
an acceptable location in the garden, and one day to reassemble.
I've also rigged up Team Viewer from the observatory laptop to the office.
Just need some clear skies...