My dormancy area I call my airlock. My basement has an insulated door with steps going up to an outside door (wood door with 1/2 glass pane).
On one side of the concrete steps is a flat 3'x12' concrete pad (attaches to my foundation). I place all my Sarrs. Darlingtonia, Dionea and temperate Drosera in their trays there.
Normally temps are quite stable but had a problem with the insulation on the outside door last year which allowed in way too much cold air. I've used alot of Thermax extruded polyisocyranate (spelling)insulation board to keep it warmer and it seems to be working much better. The test is February obviously. So no most plants I grow outdoors on my deck in the summer but winter they are sheltered indoors too.