Decent house for a feral cat we’ve been feeding for a while. We live in southern Cal. so temps are moderate. There’s no insulation. The assembly was very easy. Took me less than 30 minutes. I added a little outdoor heating pad for the upstairs level, which warms it up a bit. It’s taking a while for him to get used to it, but seems to work fine. Construction is descent. Quite pleased with the results. Would buy it again.