The country's third-largest homebuilder, which has operations across the UK and Spain, said it expects the crisis to have a significant impact on 2020 revenues and margins and some knock on impact on 2021 delivery.

"COVID-19 pandemic has had a significant impact on production activity and therefore completion levels for the first half of 2020," Taylor Wimpey said.

The housing market, crucial to a credit-fuelled boom in UK domestic demand stretching back two decades, has been recovering steadily since grinding to a halt in lockdowns in March.

Developers are also hopeful that finance minister Rishi Sunak's tax exemption for property purchases up to 500,000 pounds, will give the market a boost.

FTSE-100 listed Taylor Wimpey said total completed sales were down 58% so far this year but that its total order book value was up 23% from a year ago at 2,904 million pounds as of June 28.

It reported a pretax loss of 39.8 million pounds for the six months ended June 30 compared with a profit of 299.8 million pounds last year.

(Reporting by Samantha Machado in Bengaluru; Editing by Saumyadeb Chakrabarty and Patrick Graham)