FreeCAD’s Arch/BIM workbench
Draw in 2D to create 3D walls. Position windows, doors and others in 3D. Some features like the roof or stairs have their own modules.
You can always fall back to one of the other many workbenches should you need something not part of a typical home (weird stairs, a detailed cupboard, …).
I could not find documentation easily in the past but it likely exists. For a video introduction the FCBLounge channel (YouTube) provides great visual tutorials.
I’ve documented part of our home in this to ideate remodeling. It can be used for pipework but I did not try that yet.










Really depends on what is considered nice about MacOS. Just had a new on-boarding with someone who really liked their Mac keybindings and it seems getting those dialed in is nicer (easier? better?) on KDE. I’d also generally gravitate towards Gnome for Mac users though.
As a piece of advice for OP: Accept the use of keybindings over the touchpad. Mac has done a great job and I have not seen a Linux laptop/distro combination that nails it. Search for the pain-points after switching and ask about it (kindly) on a community like this.