Galliford Try has filled 95 per cent of its projected construction order book to 30 June 2012 and secured 58 per cent for year to 30 June 2013.
But orders had fallen to £1.6 billion, down from £1.75bn this time last year, the contractor said in its interim management statement.
House building sales revenue grew 38 per cent to £430 million, while mortgage availability was showing signs of improvement, the firm said.
Greg Fitzgerald, chief executive, said: “Although the economic outlook remains uncertain, we have been encouraged by the performance of our house building business as its growth plan comes to fruition during this financial year. Construction is benefitting from its long term frameworks, particularly for the water industry, during the current more challenging markets.
“While continuing to adopt an appropriate level of caution, we remain confident in delivering the objectives of our expansion plan,” Mr Fitzgerald said.