Best you can do in that case (I done this many times its super easy really).
Get several clean buckets; ideally with lid. Add current tank water in them and split the fish up into it and toss possible plants in the buckets with them.
Drain the whole tank.
Have a extra bucket where you can put either the whole filter in to or at least the filter pads & bio wheels (whatever it has) the filter is THE most important thing as this houses all your necessary bacteria.
At your home: Set up tank where you want it fill with new tap water (use conditioner!)
Hook up the filter asap when you have the tank filled up and get it running, do not wash it; if its needs a lil cleaning only do it in the tank water bucket you have there but do not wash too much (washing out the needed bacteria)
If the water parameters are the same net fish into tank; if they're not the same drip acclimate the fish and then move them in.
If there's plants involved plant them as you like.
To be on the safe side, check your water parameters for the next few days just to make sure you hadn't caused a new mini cycle there.