Design–build Puns

But I've no concrete plans yet.

He had a complex complex complex.

The first one is looking at the blueprint and finds that the stairs don't have enough space so he consults his supervisor. He shows him the blueprint and the space and says "there's not enough room so we need to change it to be either a ladder or an elevator". The supervisor thinks for a moment and replies "the latter"

The engineers say the contractors didn't build it to specifications. The contractors say the engineers didn't design it right.

All I know is that there are 2 sides to every story.

I was just assigned an architecture project to design a retail building of some sort. The products, name and theme are all free for me to choose, so I want to make it a killer pun.

What's a punny store name/product combo I can use?

My mom was talking about how if she was designing a house for a crazy cat lady. She was saying that she would have tunnels and rooms for only cats to travel through. I look at her half asleep and I say "are you talking about building catacombs?" She didn't think it was as funny as I did