I am in the Midwest. The modular I had in mind would run $176,000, plus lot and utilities.
I am serving as my own builder and the cost will be $140,000 for same house with fewer posts in the basement. A friend who is his own builder started last month and I am starting first week in June. I plan on using his subs if they pan out, plus some I already know.
The modulars were just not friendly to the custom home. Everytime I wanted a change or an upgrade the costs shot up. Even upgrading to Andersen 400 series windows, the add-on was basically the same cost as me buying the windows myself at Home D*pot, no credit for the standard windows. Real oak millwork, add $1600, that's how much it costs me to buy it, you gotta figure they already have the labor to install it, whether I go with the plastic crap or real wood.
You still have same foundation costs and HVAC is not included, nor is the septic, they add on costs for the garage making it $15,000 instead of $11,000. The setup and delivery is $16,000.
It's just not for the person who wants to build his own design and who cares about quality components like windows. And you have the stigma of the modular home.
The homes I looked at had normal roof lines like 6/12 or even 8/12, they are better looking than the old modulars with 4/12 pitched roof, that had to fit under an interstate highway bridge. The roof is now raised on-site and propped up, which scared me too. My neighbor put in a old style with low roof line and it looks like a mobile home, sitting in a neighborhood with $300,000 2000sq foot ranches. Not good, but thats why we move to the country, fewer zoning laws and more freedom to do our own thing.