The move follows a 25% uplift in sales to 3,425 completions in the first half of the year ending January.
This helped lift turnover by 40% to £701m and drive pre-tax profits ahead by 73% to £104m.
Ted Ayres, chief executive, said: “The order book is significantly ahead, having grown in value by 63.5% to £829.5 million at 9 March, representing 3,944 homes.
“As a result of this strong start to the spring selling season, the board now expects to deliver volume growth of up to 20% in the current financial year.
The house builder, which is traditionally strong in the north, opened new divisions in Manchester and the Thames Valley last August.
These have performed well contributing 62 legal completions in the period.
Operating margins jumped from around 13% t0 15.6%, as average selling price increased from £187,426 last time to £212,071.
Like other major housing developers, Bellway is seeking to build up its landbank before prices get too high.
Bellway’s total owned and controlled land bank has risen to 34,057 plots, equivalent to 5.2 years supply based on current completion rates.