Steven Bruck, a partner at Blick Rothenberg Chartered Accountants, says: "The Chancellor wants to encourage new building and help hard pressed buyers with inadequate deposits.
"He has announced interest-free loans of 20 per cent on properties up to £600,000. He has also announced up to £130bn of mortgage guarantees by the Government.
"He clearly sees encouragement of new builds and property ownership as a major priority. It will be interesting to see the detail on this as it could be significant."
George Osborne faces criticism that his mortgage guarantee plan might actually make houses less affordable.
The Treasury has still not explicitly said it will prevent homeowners from using taxpayer-backed Mortgage Guarantees to buy second homes.
It opens up the possibility of buying a house to millions who don't have a deposit but they might have to pay more for the privilege.