2022

In OECD countries,
44 million are burdened by cost of housing [1]
Shortage of homes for sale = 600k USA, 1.6M supply is being produced, new households are about 1M, and demolitions are 1/3 of that each year. [2]

2021

Shortage of housing in the USA is 6.8 million homes. To break even over the next 10 years, the National Association of Realtors found, we would need to build at least 700,000 new homes each year. [3]
Number of houses built per year - about 1.5M in the USA - [4]
Number of tiny houses built per year - about 1.5K [5]
Spec vs owner-builder housing - 50k owner built homes in 2014 [6]. This is a small fraction of total supply. But, this does not include rural areas (no permits) - which may bring the number up to be much higher.
Custom homes are about 20% of all construction [7]