The radical new homes are the result of a research project by the University of Bath in collaboration with manufacturer ModCell.
The row of seven homes have been built using prefabricated panels consisting of a wooden structural frame infilled with straw bales or hemp and rendered with either a breathable lime-based system or ventilated timber or brick cladding.
The straw walls provide the insulation required by current UK building regulations.
Professor Pete Walker said: “The construction sector must reduce its energy consumption by 50% and its carbon emissions by 80% by 2050, so radical changes are needed to the way we approach house building.
“As a construction material, straw is a low-cost and widely available food co-product that offers real potential for ultra-low carbon housing throughout the UK.
“Building with straw could be a critical point in our trajectory towards a low-carbon future.”