First Home Owner (New Homes) Grant
If you purchase a newly built house, townhouse, apartment, unit or similar the purchase price must not exceed $600,000.
If you purchase vacant land and sign a building contract with a builder then we add the value of the vacant land plus the value of the comprehensive home building contract plus the cost of any building variations done together. The total combined cost must not exceed $750,000.
Real more on link: https://www.revenue.nsw.gov.au/grants-schemes/first-home-buyer/new-homes