Despite there being no finalised route for stage two of Canberra's light rail project, or even an official green light to build it, a construction company is selling apartments on the claim buyers could walk out the front door, get on the light rail and be in the city "in under 10 minutes".

Key points: Woden apartments were advertised with the tagline "time is the ultimate luxury"

Woden apartments were advertised with the tagline "time is the ultimate luxury" Greens politician Caroline Le Couteur says Geocon's claims are "surprisingly optimistic"

Greens politician Caroline Le Couteur says Geocon's claims are "surprisingly optimistic" Access Canberra is looking into the advertising campaigns of a number of development companies

Canberra construction giant Geocon had spruiked the light rail as part of a "time is a luxury" sales campaign tagline for their Grand Central Towers development in Woden, describing the chance to buy into the complex as "an extraordinary opportunity for Canberrans".

In Geocon's sales video, still available online, managing director Nick Georgalis said buyers of the apartments in Canberra's south would "[be] able to walk out the front door and jump on the light rail and be in the city in under 10 minutes, every five minutes".

The Geocon is development in under construction at the moment. ( Supplied: Geocon )

But ACT Greens politician Caroline Le Couteur, who was at the launch party for project last year, was struck by the campaign's claims.

"At that stage, obviously, there wasn't a definitive time for the light rail — there still isn't," she said.

"But they were talking about light rail taking 10 minutes from sitting in your apartment to being in Civic and they were talking about a five-minute frequency.

"Both of those seem surprisingly optimistic … given that the bus doesn't go as fast as that and the Government never suggested that the light rail would be as fast as 10 minutes."

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Stage one of Canberra's light rail network, which opened last month, links Gungahlin to the city via a 12-kilometre track.

The route has 13 stops, runs every six minutes in peak periods, and takes 24 minutes from end to end.

Geocon 'never briefed' by ACT Government

The proposed routes for stage two of Canberra's light rail project. ( Supplied: ACT Government )

In a statement to the ABC, an ACT Government spokesperson said the route, travel times and frequency for stage two of the transport project had yet to be finalised.

The Government also said that Geocon had never been briefed about, or given any indication of, the likely outcomes of deliberations, procurement processes or planning approvals.

And this morning Chief Minister Andrew Barr flagged that the project could be pushed back further, after the Coalition claimed victory in the federal election.

"Depending … on the final outcome of the Australian Parliament, in terms of the Senate and the House of Reps, it may not be possible to get parliamentary approval for the second stage in this parliamentary term," he told ABC Radio Canberra.

Do you know more about this story or have an issue ABC Canberra should investigate? Email canberratips@abc.net.au

Initial plans for the route from Civic to Woden included a dogleg through Barton and Parkes so it would pass employment hubs and cultural institutions and encourage greater use of the system.

Maps of that proposed route included 12 or 13 stops, with the track running for about 11.8 kilometres.

But the Government has indicated that plan could be dropped in favour of a more direct route along the eastern side of State Circle, along more than 11.2 kilometres of track with fewer stops.

Ms Le Couteur said she had raised concerns about Geocon's campaign because she was worried people would purchase an apartment believing the light rail claims to be fact.

"If you're buying something you should know what you're buying," she said.

"Grand Central's tagline is 'time is the ultimate luxury'. It was selling this as a sales point.

"It [concerned] me because I thought we had the real possibility that in however many years' time, when the light rail and Grand Central were both finished, there would be a bunch of people who were upset because they bought something thinking it was going to have much better public transport than possibly it will end up having."

The Grand Central Towers apartment complex is under construction in Woden. ( ABC News )

Access Canberra looking in to several companies

Access Canberra, the government agency that oversees consumer laws, confirmed it was looking into the advertising campaigns and practices of a number of development companies.

But Access Canberra said it would not be appropriate to comment on specific allegations or identify the companies involved.

"These claims are in relation to Australian Consumer Laws and, as these enquires are ongoing, we cannot provide further comment at this time," an Access Canberra spokeswoman said.

The maximum penalty for companies for unconscionable conduct and making false or misleading representations under Australian Consumer Law is up to a $10 million fine or about 10 per cent of a company's annual turnover.

Geocon also declined to respond to questions from the ABC due to the matter still being under investigation, but said it was cooperating with the authorities.

Ad Standards have twice dismissed complaints about Geocon's depiction of women in its advertisements. ( ABC News )

The construction giant has previously attracted criticism for its marketing campaigns, including claims of sexism and objectifying women.

However, Ad Standards — Australia's independent advertising complaints adjudicator — have twice dismissed complaints about Geocon's depiction of women in its advertisements.

Unions ACT recently protested the company after it used an International Women's Day event to spruik sales and launched an online petition calling for a ban on "sexist corporate advertising that objectifies women's bodies".

It prompted the ACT Government to consider introducing new regulations, something that was heavily criticised by Geocon.

"The statements made by the ACT Government are outrageous in regard to changing advertising standards," Mr Georgalis said in a statement.

"It is highly unlikely, and would set us back 50 years, if the ACT Government was to change how advertising worked in the ACT.

"We dare them to."