Housebuilder Persimmon pledged to step up construction of new homes to meet soaring buyer demand after government schemes helped half-year profits jump 40%.
The Charles Church and Westbury Partnerships group said more than 1,700 reservations had been made under Help to Buy since it was launched in April, allowing those with only a 5% deposit to buy new-build homes.
Underlying pre-tax profits for the first half of the year jumped to £135.3 million from £96.9 million a year earlier, with legal completions rising 7% and forward sales increasing by more than a fifth.
York-based Persimmon said it expected demand from home buyers to continue picking up over the coming weeks and months as the housing market recovery gathers pace.
It vowed to increase home building activity, with plans to open another 85 sites by the end of the year, adding to 390 sites already under construction.
The company said: "The group is working hard to increase production in response to the improved demand evident in all our regional markets.
"To deliver the volume to meet this increased demand, we are maintaining our strong investment in land and stepping up our investment in construction," the group added.
It is the latest builder to confirm a sharp increase in profits thanks to improved access to mortgages and the Help to Buy scheme after Bovis Homes yesterday reported a 19% rise in interim pre-tax profits.
Help to Buy has been boosting new build take-up, while the programme is also being extended next year to existing homes.
Mortgage availability has likewise been helped by state initiatives, primarily the Bank of England and Treasury's Funding for Lending scheme, which provides cheap credit to lenders in exchange for them providing mortgages as well as small business financing.
But there are fears that Help to Buy in particular could lead to a housing market bubble and critics have been calling for a clear end date to be set for the scheme.
Persimmon - a recent entrant to the FTSE 100 Index - has seen reservations jump by 30% since Help to Buy was introduced in April.
It said overall selling prices had remained stable in the first half, but that private reservation prices had risen by 5% to an average £179,199.
Analysts at Panmure Gordon praised a "strong set of results", adding that Persimmon was a "quality business".
But experts believe the group's shares are over priced after a recent strong run and the stock eased back by nearly 3% after the half-year figures.
Chris Millington at Numis Securities said: "Persimmon's performance on margins is impressive and has led to large upgrades.
"However, we still feel the shares are too expensive relative to peers."