Can we actually get it in?
A hot tub is delivered on its side, on a trolley, down the side of the house. That single measurement decides the sale.
Choose a size
Drag to walk round it
Opens your camera. Point it at the patio.
Once it appears: one finger drags it, two fingers turn it. It does not need a clear floor. Drop it where it fits and judge the size against what is already there.
Access, base and power
Three questions, in the order that kills deals.
Let them scan it and hold their own phone up
The camera view only works on a phone. Point the code at their camera, and this page opens on their handset. That is the moment the idea sells itself.
Access dimensions assume delivery on edge using a trolley and two people, with hand clearance either side. Crane hire may be possible where access is restricted. Filled weights include water and occupants; bases should be designed by a competent person. All electrical work must comply with BS 7671 and Part P, using an RCD protected supply and a suitably located isolator.