Civil contracting firm Fulton Hogan says sales jumped about 14% over the year helped by the purchase of an Australian road services firm.
The privately-held firm made an annual operating surplus of $104.5 million - an increase of 13% on the previous period.
Sales rose to more than $2.4 billion.
Fulton Hogan bought Australia's Pioneer Road Services during the year, and bought back Shell New Zealand's stake in the company.
The company says it now generates 59% of its revenue in Australia.
Fulton Hogan's managing director Nick Miller says there is a significant opportunity to grow in Australia where the infrastructure sector is running at $84 billion and that's expected to increase to $100 billion by 2014.
He says seven years ago Fulton Hogan had $180 million of sales in Australia and in the coming financial year those sales are expected to be around $1.5 billion.
Mr Miller says there is likely to be strong growth on the back of the Christchurch rebuild, but there are also challenges around funding, particularly in the regional areas of New Zealand, given the demands which Christchurch will place on the Government.
He says it's similar in Australia where the states which are heavily reliant on the mining sector are a lot stronger than the states which are not involved in that area.
Fulton Hogan says a public listing is not on the cards.