Oh boy, so much to say on this subject. Here are some links you might like on the subject of house design and construction:
http://www.greenbuildingadvisor.com/blo ... everything
http://www.greenbuildingadvisor.com/blo ... -manifesto
http://www.greenbuildingadvisor.com/blo ... good-house
General advice:
• Masonry over wood (immune to insects, fire, mold, rot, water, bullets, tornadoes, etc)
• Superior insulation over bigger heating/AC systems
• Crawlspace/basement instead of slab-on-grade (entombed pipes very expensive and difficult to work with after the fact)
• Brick exterior (lowest maintenance & highest strength)
• Small house; like with weddings, size is the basic determinant of final cost
• No gas combustion inside the house; all-electric everything
• Backup high-efficiency wood stove or rocket stove
• Do not skimp on the costs of the foundation or roof
• Metal roof; standing seam or exposed-fastener screwed into purlins above the underlayment
• Design with generous roof overhangs of 1.5 feet or more, especially if it is very sunny or rainy
• You don't need a dryer; following this advice will save you a ton of money
• Most contractors are clueless; assume the worst and educate yourself. Never trust anything they say if you are not able to personally verify whether it is correct or not.
• Don't get sucked into the world of "alternative" building e.g. earthbags, cob, strawbale, etc. A lot of this stuff doesn't work as well as the proponents claim unless you become a complete expert, and they all involve extremely large amount of labor.
If you're interested in self-sufficiency, here are some things I have bouncing around in my head:
• Go off grid. Likely cheaper than connecting to the grid in a remote area
• Use a solar thermal hot water heater; a drainback system if in a place where it freezes, otherwise a simple direct heater system. Read everything here:
http://www.builditsolar.com/Projects/Wa ... eating.htm
• Use solar PV for electricity, coupled with as small a battery bank as you can manage. Batteries are expensive and don't last. Don't use lead acid batteries. Opt for more panels vs more batteries. Minimize your electrical loads. All LED lighting, everything on timers, etc. Direct excess power generated beyond battery capacity to resistance heaters in your water storage tank.
• Minimize electrical and mechanical gadgetry. Everything should be passive if possible. For example, store water in a cistern located above the fixtures so gravity can feed them, rather than in an underground tank where you'll rely on a pump. Anything you can't fix on your own will be broken for days until someone can come out to fix it for you, and that will be expensive.
• Collect rainwater. With enough rainfall, a big enough cistern, low-flow fixtures, and water-wise habits, you won't need a well. Which is good, because wells are expensive, can be unreliable, require pumps, and the water quality is often bad. And they can go dry.
• Install a graywater system and composting toilets. The graywater will water your fruit trees, and the compost from the composting toilet will fertilize your soil. This way, you won't need a septic system at all, and you will simplify your plumbing because with no septic or sewer to produce nasty gasses, your plumbing fixtures won't need any traps or vents; just simple pipe runs straight to the fruit trees. Mucho savings are possible.
Consider an aquaponics system. You can grow food and raise fish at the same time. Cool stuff.
Human behavior is economic behavior. The particulars may vary, but competition for limited resources remains a constant.
- CEO Nwabudike Morgan