Blender in 3D printing I am starting a business in 3D printing and I would like to ask you about Blender as a software for creating models of houses. Is Blender a good choice for this business? 
For example: I would get a contract from architect to create a model from 2D plan. And now: Is Blender a good choice for this type of business? Can I easily create a 3D model of that plan and print it or are there any problems like wall thickness and so on?
Yes, you can use Blender for 3D print modeling. Look for these addons:


"3DPrint Toolbox"
"Measureit"


These addons are not a must, but I highly recommend them, and I'm sure they will help you a lot.

Also I recommend these series:

https://store.blender.org/product/blender-for-3d-printing/

Is not free, but you save you a lot of time. You learn the correct workflow quick and with explanation, no like many people on YouTube who use Blender for two weeks (so they know almost nothing), and they think they can teach others :D