Well it is finally done; my Cats and Dogs Buildmode addon. Let me tell you this was no easy project. With the release of the Pre-EP patch came cc updates but it also messed with the way windows were made which meant waiting for S4S to update. Then I had a vacation, and then this blew into a lot bigger project then I was expecting. However, now it is done the objects are not only more useful then before (thumbs up to Maxis for giving us a very decent sent of buildmode items to start with) but you now get even more options for building. Win-win. Hopefully you will all get as much use out of it as i have, and will continue to into the future.
What you need to know:

It should go without saying, but this does require you to own Cats & Dogs
There are 2 tile versions of a lot of 1 tile items because I need half tile placement. Don't like them? everything is individual so you can pick and choose
there is no merged version because of above point
There are 2 default replacement files: one for the cutout for the 2 tile archway, and one for the single barn door because it moved when the door animation played. If you already have a default replacement for the archway, feel free to remove mine. It seemed silly not to include it

Updates:

28/10/2020: Now compatible with patch 1.66 new cutout system

The Build/Buy items feature:

REQUIRES CATS & DOGS EP
non-default
55 meshes in total all in their original swatches
find items easily using phrase "C+D" in search bar (try this tutorial to easily find my sets)
style (found under "basics" tag) and colour filter compatible
custom thumbnails

My content will always be free, but if you are so inclined and able, you can show your support through Paypal or support me on Patreon.

Cats & Dogs Build Mode Expanded