Morpeth County Court has been earmarked for closure by the Government.
A number of buildings in England and Wales where legal hearings take place will close if the recommendations are approved, with ministers saying they are being underused.
The Morpeth court, which deals with family cases, civil litigation and boundary disputes, is in a section of Fountain House in Newmarket so the building itself is unlikely to close.
The Government says that civic and public buildings could be used instead but Carr & Co Solicitors senior director Sharon Smith (the firm has an office in Morpeth) said that many people in Northumberland will have to travel to Newcastle for hearings.
She added: “We’re hugely disappointed with this decision, which means that many people face additional costs to access justice.
“The staff are extremely effective and helpful and although they will go elsewhere, they will have to be split up.”