Jos Ruffell, Pete Gillespie and Ian Gillespie of Garage Project aren't strangers to publicity, with one of their latest stunts including producing a Red Peak beer.

Garage Project is brewing up a storm as the fastest-growing company in this year's Deloitte Fast 50.

The Wellington craft brewer recorded more than 660 per cent growth, beating Christchurch construction firm Farrell Group, food company Mad Group and bespoke jeweller Naveya & Sloane.

The Fast 50 is an annual index that measures New Zealand's fastest-growing companies based on three years' growth.

Garage Project also won the national award for fastest-growing manufacturer.

The results were announced at a ceremony at Auckland's Villa Maria wine estate, where a celebration of this year's top 50 followed a day of workshops.

Deloitte private partner Bill Hale said the high level of diversity among this year's Fast 50 companies showed any type of business, from anywhere in New Zealand, could do well with the right approach.

"This is important as it creates job opportunities across more than just the tech industry, and demonstrates that SME businesses can be successful in their niche with good strategy and good execution," he said

"What's more, the high percentage of first-timers and the large number of smaller companies with revenue under $5 million suggests that there is plenty more growing to do for this year's group of companies."

The threshold for entry into this year's Fast 50 was 194 per cent growth and the top seven companies had three-year growth rates of more than 500 per cent.

Almost half the companies on the list were from the Auckland and upper North Island.

Dairy products company Lewis Road Creamery was named the 2015 national Rising Star, an award won by My Food Bag in 2014.

The Rising Star awards recognise early-stage, high-potential companies.

Farrell Group, the Fast-50 runner-up, won the national fastest growing services business award and third-ranked Mad Group won the national retail or consumer products business award.

Vend won the national award for fastest-growing technology business and The Collective won the national fastest-growing exporter award.

The award for the fastest-growing agribusiness went to Compass Agribusiness Management, while EBOS won the fastest-growing mature business award.