Sounds like sage advice..thank you!

Thank you for your prompt response! The RBZ file I attempted to use came from the exact source you suggested. My Extension Manager Extension-Loading-Policy is set to 'Unrestricted', and when I click on Install Extension it just sits there. I did get it to show up in the Extension Manager one time, but it never showed up under the extensions tab and no tools. I am using Sketchup 2017 Make on my Mac. Do you have any further suggestions or perhaps know of another similar extension which is free or at reasonable price? I'm just a newby trying to learn what appears to be a great program.
Thank you!

Hello,
I am a newby and am trying to download and install a US version of Housebuilder extension. The only link that I could find in the forum is a copy that is unsigned and my 2017 Make Sketchup will not install it. Can someone help me find a good file to download or tell me how I can use the one I have? Thank you!