TalkTalk, Sky and CityFibre have confirmed that a 1Gbps Ultra Fibre Optic (UFO) network is to be rolled out across the whole of York.
The move comes after a trial carried out in York earlier this year, which covered almost 14,000 properties, yielded very strong results.
More than 2,400 customers have signed up to the service with TalkTalk and Sky since the start of 2016.
The technology will now be deployed on a much larger scale across the city, with the network set to reach a further 40,000 homes over the next 18 months.
Richard Sinclair, General Manager Ultrafast for TalkTalk, commented: "We are very pleased with the success of UFO in York so far.
"Our customers are amazed at what they can do with their ultrafast connections - streaming HD TV without buffering, playing games in real time with people on the other side of the world, or simply enabling every member of the family to be online at the same time."
Dido Harding, TalkTalk's Chief Executive, added that the work being carried out in York is a clear demonstration of its commitment to playing "our part in securing connectivity for everyone".
"I have long been convinced that we need to be more ambitious when it comes to the UK’s digital economy, and upgrade our broadband infrastructure once and for all," she said.
The move has been hailed by Digital and Culture Minister Matt Hancock, who said the extension of full fibre gigabit speeds in York is "exactly the kind of thing we want to see industry delivering across the UK".
He stressed that the government is working to support full fibre rollout by removing barriers and offering incentives that will help Britain cement its role as a digital leader, as well as get the "very best broadband to families and business".
As part of this commitment, the government has already pledged to implement a new broadband Universal Service Obligation (USO) that ensures everyone in Britain has a legal right to request minimum speeds of 10Mbps by 2020.