Perhaps no
#15 & no#11 but with 'Investment & Development' as the strap line beneath them.
The more I look at #11 the more I like it in fact. Simple, good balance and the S&C combined as if in a partnership and the house could equally be an arrow so it doesn't tie us too much too residential.
I'll show this one to the others involved and come back to you with any more comments.
Thanks,
:) Martin