Taylor Wimpey outlined that its total number of house completions fell by 39% to 9,799, between 2019 and 2020.
It attributed this to the site shutdowns in the second quarter of the year due to the pandemic.
As a result, the housebuilder reported 2020 revenue of £2.79bn, down from £4.31bn in 2019.
In addition, the company’s voluntary ground rent review assistance scheme is nearing its conclusion, having reached agreements with 99% of freeholders, with the remaining 1% in negotiations.
It has also revealed an additional £125m fund for fire safety work on properties, which have issues relating to cladding.
Pete Redfern, chief executive of Taylor Wimpey, said: “2020 was a very challenging year, during which our priority has continued to be the health and safety of our colleagues, customers, suppliers and subcontractors.