What about something like that ?
8 houses in a row, built using a wood structure and straw bale wall for insulation (thermal AND phonic insulation) and clay plaster. So the construction material is storing CO2 rather than emitting tons of CO2 like concrete does.
It collects rainwater for the garden and has enough solar panels for the community and to contribute to the electrical consumption of the village around it.
It leaves a lot of space for land to develop a food forest, permaculture projects and leave space for biodiversity.