> I was under the assumption that architects typically design the building plans and do all the engineering, and a construction crew (which can consist of peopl

> I was under the assumption that architects typically design the building plans and do all the engineering, and a construction crew (which can consist of people mainly in their 20s) will build those plans under the supervision of the lead engineers/architects. Draftsmen can also draw up the plans rather than an architect. There are different educational requirements as well as trade requirements before each can begin practicing said trade. (You can't just call yourself an architect just because your last employer gave you that title! both require professional licenses too.) Plans are approved by a city official and permits are given. A contractor is hired to build based on the plans, and they hire subcontractors. The result often has to change due to unforeseen circumstances, and usually those changes don't result in a redesign. If the contractor sucks balls, the result will be a tire fire unfit for disaster relief housing. If the contractor is good, nearly everything will go as expected, it will be delivered on time and on budget. In between those, a lot of shit gets swept under the rug.