The neighbour cities of St. John's and Mount Pearl broke some new ground on Thursday night.

The cities co-hosted a public meeting regarding a proposed condominium development that would straddle the boundary between the two cities.

Mount Pearl Mayor Randy Simms said the briefing was for information-gathering purposes.

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Mount Pearl Mayor Randy Simms. (CBC)

"We want to know about the development itself, and what exactly the developer plans to try and put on that particular site," said Simms.

"And what the impacts — good and bad — will be on the residents from both St. John's and Mount Pearl."

Simms said that the proposed development is unique.

"You've got really one development and two buildings. One is on one side of the border, one is on the other."

The developer is looking to design a six-storey building.

Some of the people who attended the meeting expressed concerns about increased area traffic and an impact on the landscape.

Feedback will now be compiled into a report, and then submitted to both city councils for discussion and a final decision.

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Deputy Mayor Shannie Duff represented the city of St. John's at Thursday night's public briefing. (CBC)

Simms added he has no idea what would happen if the two cities couldn't agree on whether the project should go ahead.

"It would really be an issue for the developer. Whether or not the developer would look at it and say,'Well, can we do half of a development ... is there something here that would make sense?' It would completely change the water on the beans. I'm not anticipating anything like that."