Columbia subject headings:
Architecture, Domestic--Environmental aspects.
Sustainable architecture.
Harvard subject headings:
Architecture, Domestic--Environmental aspects--Competitions.
Dwellings--Design and construction--Environmental aspects--Competitions.
House construction--Competitions.
Owner-built houses--Design and construction--Competitions.
Sustainable architecture--Competitions.
Princeton subject headings:
House construction--Competitions.
Owner-built houses--Design and construction--Competitions.