Hi 1peanutbutter
I think it’s more to do with where there are suitable locations to site the boxes, rather than distances apart. Not sure that there is any definitive research about distances, as such. If you have some good quiet, sheltered, shaded places in your garden then I wouldn’t worry too much about whether they are too close together. (although I would avoid making them semi-detached, just in case there is a noisy neighbour!) The hogs might change houses at some stage, anyway, so might find it quite handy if there’s another one nearby.
Just maybe try not to make too much noise around the box which is being used, so as not to disturb the hog in there. Plan before you move, is probably a good idea. Also it’s best to put the houses where you are planning to leave them long term. i.e. don’t move them too often – some hogs need them to become part of the landscape before they use them.
Good luck. Hope some hogs move in to your expanding hog ‘estate’ soon!
