They’re likely the first of their kind to be found in Britain and possibly the entire ancient Roman Empire, which spanned from England to western Asia at its peak around AD 100.
‘These archaeological remains are a fantastic find and are far more than we ever dreamed of discovering at this site,’ said Keith Emerick, inspector of ancient monuments at Historic England.
‘They are already giving us a better knowledge and understanding of Roman Britain.’
Housing developer Keepmoat Homes employed archaeologists to carry out excavations at the site, which has now been redesigned to conserve the find.
‘We are grateful to Keepmoat Homes for their sensitive and professional approach to helping ensure the future conservation of this important historical site,’ said Emerick.
Historic England said it will recommend that the remains be protected as a nationally important scheduled monument.
A scheduled monument is an important archaeological or historic site that is given protection under the Ancient Monuments and Archaeological Areas Act 1979.
A spokesman for Historic England said the remains were more significant than anticipated.
‘This type of building layout has never been seen before in Britain and could even be the first of its kind to be discovered within the whole former Roman Empire,’ they said.
Historic England will grant aid for the additional archaeological work, which will include the analysis and publication of discoveries made at the site.
‘This is a remarkable discovery, which adds to the story of Roman settlement in North Yorkshire,’ said Karl Battersby, corporate director, business and environmental services at North Yorkshire County Council.
‘Work by North Yorkshire archaeologists has already established the buildings were designed by the highest-quality architects in Northern Europe in the era and constructed by the finest craftsmen.
‘Because of the significance of this, it is excellent to see that the layout of the new housing has been redesigned so this important part of our history can be preserved.
‘There will be further work on the finds and environmental samples to try to establish exactly what this enigmatic site was and why it was created so far from other Roman centres.’
David Walker, Scarborough Borough Council planning manager, added: ‘We are pleased to grant a change to Keepmoat’s original planning application to accommodate the preservation of this nationally important archaeological discovery.
‘In creating new homes for future generations, it is only right that we keep alive the fascinating history of those that have gone before us and how they lived.’