Was your builder a low cost builder?
I don't know what they were considered at the time. Watch the video and you tell me. I clearly states who the builder was.
What's wrong with this picture?
From earlier comments you made, it is a deck over a roof which you stated earlier you prefer not to include in your homes. From the engineering point of view, I have no idea and shouldn't have to get a degree to know what is wrong. That isn't my job, it's the builders job to point out the problems to the potential buyer.
Also, let me add. Even in today's market, you pay a builder 10-15% or a flat fee to build a house. Coordinating subcontractors or driving past a site isn't worth that. You pay for the builders KNOWLEDGE about his profession. Otherwise, what do you need a builder for ?