Top of the list was utilities supplier National Grid Transco.
The index is a self-assessed survey to benchmark how firms manage, measure and report their corporate responsibility.
Four components were taken into account: corporate strategy; the integration of social responsibility; management; and performance and impact across a range of social and environmental areas.
Amec was the only other contractor in the index, placed 56.
The only housebuilder rated was Berkeley, at 94.
Other major industry names included utilities client AWG (44) and Jarvis (89).