True the homes are built in an environment which is controlled. Beyond that you are at the mercy of the installation contractor. These homes are not fully assembled when trucked down the road, and things get damaged in transport. I have seen water running down an outside wall in a rain storm where the insulation got soaked. The installer continued the next day to sheet rock and finish the interior, he had a deadline.
I am not trying to put a bad image to all modulars, just don't sugarcoat it saying they are better. There are pro's and cons to all building. I want you to tell us the good with the bad, let folks make up their own minds with intelligent discussion.
Another thing I can't understand is the less waste part, if you have a 2 story building you have way more material to build the modules. A double floor and ceiling joist construction comes to mind, how is that not wasteful?
And the last issue is the quality of material, you get what you pay for. Plastic trim, plug together wiring which is hard to improve or add to, glued parts off-gassing everywhere, you can smell it.
Some companies are better than others, and you can improve the home if you pay more, but then it does not compete with the stick built price.
I understand the concept of building in a controlled environment, but having installed many modulars and built many homes, I go for the old style stick built.
Unless you can afford a post and beam.
Getting off soap box now.