How to move shelters when construction's going to start?

All (or most) of the neighborhood ferals seem to make their way through one specific passageway -the area where our detached garage almost butts up to the neighbors detached garage behind us--/there's a short wooden fence between our two garages/yards (we as neighbors slip around to visit vs going around the block)...as do the kitties). They have a winter shelter on their property next to their garage, and we have a heated shelter between our two garages, and another heated one on the more traveled side of the garage, near the fence end. PROBLEM: just found out the neighbors are tearing down & rebuilding their garage...complete with new concrete. In other words.....the cats will be uprooted beyond belief.

We're terrified for them (the neighbors are concerned too - but their garage is caving in). They plan on still leaving their shelter where it is (suppose the cats might use at night when construction is done for day) but otherwise can't imagine the cats will want to be anywhere near. Obviously our 2 heated shelters are also close to the garage construction site and therefore should probably be moved, right? I'm hoping if we move them to the front of our garage and/or along our backyard fence on the other side of the back yard (our backyard is only about 30 feet across and deep -tiny). That means running extension cords across the yard (my husbands not a fan, but he loves me & basically loves the kitties). Any way to draw them to the new spots? Or just hope they find them? I can't put food in (at least evening/night) as we're a heavy raccoon area) but could put mackerel in & taje it out.

Thoughts?

I have moved a few shelters before.  Try to do it now before the cold sets in.  You can put some catnip inside and around the shelters that they might smell.  If you can get close to them without them scattering, you can try to point it out to them.  My guess is if you move them now, by the time they really need them, they will have found them. 

If you want to know if they are being used, you can try a trail camera to see if you see any activity.  We use many many extension cords for winter warmth and for the ip wireless cameras I use.  We do have 4 outside outlets so that really helps.  Also the heated pads and cameras don't take a lot of power.

The ferals might be freaked for a bit, but I bet they adjust.  The house on the side of my property has been under construction all summer.  At first the ferals hid under my deck, but they are now used to it.  The workers freak them out if they are moving around, but they have adjusted.

Hopefully all will go smoothly for you.