Again, thanks to all who have chimed in. I'm not knowledgeable and can use all this good information
Though it seems like nothing can compare to the price of a mobile home.
Even the DIY solutions that are "free" still cost "virtual money". For example, Mike Oehler's $50 "underground house", or an "Earthship" made entirely from free or donated bits and pieces (it's conceivable). If either house takes a year to build, that is a year not spent making money. Even a low budget person makes like $10k per year - so that is $50
plus $10k (so to speak).
I'm not against DIY homes, in fact I enjoy building things. But "time is money" is a consideration.
But to be logical I guess we need to make a list of pros and cons for mobile homes, and rate the severity of the cons.
Also there has to be buildings to compare against mobile homes, similar priced dwellings.
I'll start with a list of pros and cons, in no particular order. And since I don't know much about this stuff feel free to correct me LOL
------------------
Pros of mobile homes :
1. Affordable, they cost as little as zero. I've seen nice ones for $5k. But they must be professionally moved and set up, so add $2k to the price of the home. For this example we'll say $6k for the home, moved and set up. It's 800 square feet. So that's $7.5 per square foot. But it needs to be modified so that's a hidden cost (insulation and such) so it will work out to be $10 per square foot I bet.
2. Small homes are easy and affordable to work on compared to big homes.
3. Small homes are too small for excess clutter, so it keeps us from becoming pack rats
4. Because the house is on wheels, it is resistant to earthquakes (?)
5. Because the house is on wheels, we can take it with us if we move (?)
6. It gives us an opportunity to "get in cheap" and "pay as we go". A perpetual project
From this list it's clear that price is the biggest "pro" of a mobile home. But our world does revolve around money, sadly.
------------------
Cons of a mobile home :
1. Social stigma. (? intangible)
2. Cheaply constructed. 2' spacing on studs, 2x4 roof supports, narrow doors, inferior materials and inferior methods. Maintenance is a hassle. Being that most trailers are built with mobile home parts, finding parts at the big box hardware stores can be difficult. They don't usually carry 24' outswing metal doors, crank out window parts, 54" bathtubs. Before the mid 80's many trailers were constructed without a pitched roof. Sags are common and a pain to repair. A structure needs a sloped roof. Plumbing is often done with plastic tubing that won't take city pressure, 55 psi, which is why they are more popular in a rural setting. You have to watch it when you repair or replace the well pump and holding tank. Put in too strong a system, you get to replumb the place. Older mobile homes have walls that are either 1/4" decorative luaun panels or 3/8" prelaminated decorative sheetrock. Not a whole lot of insulation value, but easy to ignite. No drywall under wall paneling, no cross walls, makes it a fire trap. Lack of roof overhang. Base on the concret pillars not set below the frost line. Lacking good insulation. More prone to various destructions, like fire, hurricane, flood, etc. Interior wall are partitions rather than proper walls, too thin to keep noise down and attach heavy shelving to.
3. Financing a used trailer is a hassle. Most banks wont touch them after a certain age.
4. Getting insurance on a older trailer can be a hassle. Most insurers require skirting to be in place and in good repair.
5. Trailers depreciate in value with age.
From this list it's clear that the construction is the biggest "con" of a mobile home. But that can be remedied
------------------
DIY projects that compete with a mobile home :
TinyHouse
House made from shipping containers
Small cabin made from locally procured rough lumber (conventional)
Mike Oehler's underground house
Small Earthship style house (?)
Shotgun style house
Katrina style house
"A frame" cabin
Mud brick or blocks and rough lumber house (?)
"garage" kit
school bus (?)
http://www.bobsokol.com/bus.html RV / camper