This strategic move brings the two areas together, streamlining operations and aligning them with the size and geographic scope of its regional counterparts.
It follows the merger of the south east and south west offices a year ago into a southern region to simplify business operation.
The firm said the consolidation would allow expertise to penetrate further into the region’s established commercial and infrastructure sectors while maintaining its presence in the slower housing market.
Hargrave said: “The merger underlines our commitment to strategic cohesion and efficiency, enabling us to draw on the strengths of both areas to enhance our market position.
“By retaining all the team and both offices near Newcastle and Leeds we remain committed to a local presence and will continue to provide our clients with engineering knowledge specific to their area of operation.”