The chief executive of Colliers International in the ACT said he was about to move his headquarters to offices next to a tram station.

The international real estate company is currently on Marcus Clarke Street but will move to the shiny CQ building, which is being built on the corner of Northbourne Avenue and Bunda Street, just up from the central tram terminus.

"We wanted to make sure our staff would find it easy to get to work, and obviously looking at the light-rail network, there's a station nearby," Paul Powderly said.

"It meant that all our people wouldn't have to drive to work. A lot of them do live in Gunghalin and in that inner north area."

Cost was a factor. The company has car-parking space under the current offices but more staff would have meant more space and that costs money. In a crowded central business district, space is valuable.

Mr Powderly hasn't noticed any rise in property prices along the light-rail corridor but thinks that will happen. At the moment supply is outstripping demand because of all the new building.

"There's so much supply so prices haven't had a chance to grow. There's so much choice," he said.

"What we've seen happen as a result of this light rail is new development all along Northbourne Avenue. There's cranes, there's new apartments being built.

"It's delivering what the government wanted which is economic activity along this corridor, but it's also now delivering for businesses like ours to make it easier for staff to access the light rail."

He thinks that anywhere within 400 metres of the tram tracks will continue to see growth and ultimately price rises once the supply of property reaches a ceiling.

The company did a survey of the commercial owners of office blocks in Canberra in 2017 and found they thought the value of their property would rise because of the tram line.

Just over half of owners believed it would ultimately raise the worth of their property, while 37 per cent said it would have little or no impact. About ten 10 cent thought their property values would fall.

The owners of commercial property did, though, fear the light rail would provide the ACT government with a reason to raise rates on their properties.

They also thought that "further densification" - bigger blocks of homes and offices crowding around the line - would help them keep tenants more easily (have a "positive impact on tenant retention", as the survey results put it).

When asked where the network should expand in the next stage, a third of the Canberra property owners favoured a line to Woden but nearly as many wanted a line to the airport.

Only 7 per cent wanted a line from the central business district to Belconnen.