Part of the Wates Group, the national developer said it was taking the lead in the construction sector and has committed to rolling out the change across all of its sites.
A pilot scheme is already taking place at its mixed-use Abbey Area redevelopment in Camden, where Wates is building 141 homes as well as additional retail and commercial spaces.
On this site, the reusable bottles have been bought from a social enterprise and distributed to the entire workforce, who can use fresh water stations to fill them up.
Previously, the Abbey Area redevelopment used an estimated 120,000 cups per year, which cost just over £1,300. Over a 10-year period, Wates estimates that swapping to reusable bottles could save approximately £4,350 per site, as well as reducing landfill by around 5,000kg.
Wates is also hoping the change will help encourage employees to cut down their use of single-use plastic bottles.
Paul Nicholls, managing director of Wates Residential South, said: “Reducing our single-use plastics waste is something we feel very passionate about at Wates Residential and this great initiative from Denise is another step on our journey towards doing that.
“We hope this commitment will not only drive change across our sites, but will also lead to new ambitions in the wider industry. We believe cutting down on avoidable plastic waste is the right thing to do and we are proud to be doing our bit to protect our Blue Planet.”