Grant Scoble from Actif Concrete said it was the busiest he'd been in his 30-odd years in the industry, with the wait for new jobs blowing out as construction booms.

"There's a lot of building growth in the south-west so we're flat out," he said.

"There's at least a five-month wait for new jobs. It's just crazy."

Actif Concrete operates within a 100-kilometre radius of Warrnambool, working closely with builders, commercial builders and engineers in the construction of concrete slabs and footings.

"Just today we're doing four separate jobs, including two houses and a private subdivision," he said.

"If we aren't doing houses we also do a lot of civil construction and roads. Our work is very weather-dependent so it's been tough this winter but we try and make hay when the sun shines."

Mr Scoble said he had 14 staff members who had continued to work during the pandemic.

"We're considered an essential service so we're some of the lucky ones that have worked the whole way through (the pandemic) and have actually been flat out," he said.

Mr Scoble said while it was good to be busy, his work was affected by the construction boom sending timber, steel and iron ore prices through the roof.

"We can't get timber in from overseas and it has a real snowball effect. We've quoted jobs six months ago and the steel along had gone up 50 per cent," he said.

"We're doing the Koroit IGA development and that job alone has $10,000 just in steel. We're happy to wear a bit of the cost but most of it comes back to the client.

"They've all been understanding though. It's just the way of the world, everything going through the roof, but our clients are all fantastic."

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