The project to demolish, then rebuild the BP gateway site along Pacific and Oxley Highways is forecast to take 14 weeks from Monday, May 6.

BP Gateway's operator Michael Webb said the redeveloped site aims for a re-opening in September.

"The duration of knock down and re-build will be 14 weeks which will hopefully place an opening date for the school holidays in September," Mr Webb said.

"Tankage will be replaced and all fuel products will be available on all pump islands.

"The shop will be demolished and a new store rebuilt to a modern standard."

Mr Webb said building works are contracted to Commercial Project Group and fuel-related works will be undertaken by Engineering Mining and Petroleum.

The project is in preliminary discussions to potentially re-develop restaurants Kentucky Fried Chicken and Subway into a mini-food court.

Franchise owner of KFC - gateway service centre, Adam Scutts said KFC, McDonalds and Olivers restaurants in the area would be trading as usual.

"As the service station development occurs we will be continuing to trade as normal," he said.

"We are in preliminary talks in regards to other matters."

Gateway Port Macquarie Highway Service Centre manager Graham Lynn said the entire area will be enhanced by the works.

"It's been 25 years since it was built and needs re-appraisal," Mr Lynn said.

"Architects King and Campbell have done a very good job of the new re-design and we are expecting it to lift the whole western end when it's completed.

"This is the second stage of the redevelopment with the Subway and Kentucky Fried Chicken site planned to be demolished and replaced with a mini food court.

"It's highly likely they will be relocated to the food court with an extra fast food brand. We're not sure when this will take place but we are hoping within 12 months.

"The project to complete would be in the order of $5 million for roads, parking, two new buildings and designs for the mini-food court.

"We've got a development consent for the mini-food court but we haven't completed the commercial negotiations with the tenants," he said.

"It's business as usual for Subway, KFC, McDonalds and Oliver's Real Food."

Port Macquarie-Hastings Council's Development Assessment Panel gave conditional consent for a highway service centre redevelopment project in 2016 to include an Oliver's Real Food restaurant, extra parking, more food outlets and the service station upgrade.

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