All of the activity has helped the regional housing market, but moves by China and the U.S. could slow future investment.
Creators say the house could be a model for affordable housing in urban areas.
Prices have dropped significantly in the last few decades, while manufacturers focus on enhanced capability and capacity.
Agencies are lowering or eliminating required down-payment amounts.
Programs will include home-energy scoring labels.
Some pumps can now withstand temperatures as low as 20 degrees below zero.
Project currently underway in Ithaca, N.Y., could be replicated in other locations with public financing.
City officials want homes to be able to withstand EF-2 or EF-3 tornadoes.
Initial testing looks promising for devices that researchers say could eliminate need for residential earthquake insurance.
Local contractors are split on the issue but do favor more thorough inspections.