Lol, I was hoping to know the fix as to learn what not to do. That being said, Thank you Thank you, Thank you!

pretty please what was the problem?

I was working on a pretty large symmetrical project and figured I could just draw half and then mirror/flip the second part. I used lots of components but the final of the house was a single component. I even opened the component and copied everything in the component then pasted that to a totally new file.

When in the new file I pasted just the items previously copied. I then ctrl+moved and created the second half. I then flipped on the green access. I then moved the flipped component to connect with the original component. They lock up like normal. However they do not actually lock. I can then double click on either side and it only selects which ever component I double clicked on. I even tried dragging the two well past the point so they were overlapped. Even then i was able to double click and only select a part.

I then created a cube and did the same process in the same new file and it works as intended. (IE as soon as they touch they become one object. This led me to connecting the two I was trying to mirror in the first place. I drew one line between both items and then when i double clicked it would select both of them.

When looking at the Model info statistics this is what I have (unless stated it is zero):
Edges 3110
Faces 1246
Component Instances 0
Groups 0
Layers 1
Styles 1

Any ideas? Also a link to the drawing https://onedrive.live.com/redir?resid=59328B388B2B420E!4946%26amp;authkey=!AAfwP3eCzm_5qJY%26amp;ithint=file%2cskp

What did you use to go from the blocks to the rounded surfaces?

The middle arrow shows that the main wall is missing here and makes it look receded, the second arrow points to doors in the recessions

Totally redone version... the stair rails still need a lot of work and I believe the 3rd story has a small balcony so a door needs to be there!

So here is my first attempt... pretty new to SU