Here is my 2 cents worth. I am a plumbing contractor. I have been one for 26 years. I feel I do very good work. I will NOT work for a home owner contractor. If I can't get out of it, I bid in a very big cushion.
The generals I work for have schedules that have proven out over the years. When they call me to work, they are ready and the other subs haven't installed things in my way. Home owners usually aren't completely ready, won't admit it to me if I ask, some don't even have their paperwork done so money is not available, I can go on and on.
If you do it yourself, please do your homework, the good subs deserve it.
Excellent points from the "other" side of the coin. I am a builder and I wouldn't waste my time trying to build my own house if I was a homeowner because of many reasons, but the main ones are:
Subs that work for homeowners mostly are hacks-otherwise they'd be busy working for GC's. As a homeowner, you wouldn't really even know he was a hack. I know some of you know good subs and that's a big help. However, good subs know that working for a homeowner is usually a waste of time, they will be delayed and ask all the wrong questions and drive them nuts. My subs are the best and will not work for anyone else but a builder.
You must understand that 90% of homeowners that hire their own subs to build a house don't really know what they're doing or what they're even looking at, so they can get taken advantage of. Don't expect the building inspector to be a quality control agent-no, that is what the GC does. Most homeowners don't know to pull diagionals on foundations & framing, how to check for plumbing defects that inspectors miss, improperly installed stucco, head flashings on windows, etc. You won't know they're a problem until the subs are paid & gone.
YES, you can save money, but at what cost to you? I've already seen a 5,000 SF house that was GC'd by a homeowner that was 9 years old have all the stucco & 40 windows & doors torn out & replaced because the stucco was applied improperly. He told me he had no idea that only one layer of 15lb felt wasn't enough. He didn't know that flashing needed to be applied in lots of areas that were left un-flashed. Cost to him to fix was ~$105,000 out of his life savings. How do I know? I did the work for him.
So what did he end up saving by GC'ing it himself?
Just be very careful here. Builders are just like any other cross section of people-doctors, lawyers, teachers, engineers- there's some bad ones and there's a lot of good ones. The cheapest ones rarely fit into the 2nd category and usually have a good backlog of work.
One advantage you would have at the present time is new construction is DEAD. You can get a builder for cheap now. I'm lucky to have work and 2008 was a great year for me. However, a lot of "prominent" home builders in my area are out of work or out of business.