All this and more is being delivered as the iconic building undergoes the largest renovation it's seen in almost three decades.

The $1.5 million upgrade is part of a five-month project, and will see the front of the courthouse extended to make room for extra security.

This includes the installation of an airport-style scanning machine, extra CCTV cameras, a Sheriff's Office, and a search room.

Externally, secure fencing will be built alongside new gates into the staff car park.

It's the increase in security fought for by Griffith solicitors, who in 2018 called for an "urgent" security review of courthouses in the region.

The gaps were dramatically highlighted after a sex offender smuggled in a sharp implement into Griffith Court House and slit his own wrists and throat when his verdict was handed down.

But not just about bricks and mortar, the package aims to increase court's efficiency and provide more security to our court users.

Judge Sean Grant, the first resident District Court judge on the Albury-Griffith circuit, started in February as part of the NSW Government's $148 million package, which will see an extra seven District Court judges appointed - five in regional courts.

His appointment means more jury trials can be carried out right here in town. He will enjoy the refurbishment of his chambers and his associate's room as part of the upgrade.

Two new Sheriff Officers will also be trained intensively, taking the number of officers in town to four.

The pair are set to face seven weeks of rigorous training over March and April, focusing on the use of communication skills to resolve conflict without using force, as well as defensive tactics.

Parliamentary Secretary to the Deputy Premier and Cootamundra MP Steph Cooke said the major upgrade is great news for the Griffith community.

"These improvements will significantly improve safety and deliver a new foyer area, as well as dedicated rooms for victims, witnesses, jurors, Sheriff's Officers and legal professionals," Ms Cooke said.

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Attorney General Mark Speakman said the works aimed at alleviating some of the extreme stress someone could feel before a court appearance.

"The improvements to Griffith Courthouse include the transformation of the old jury room into a sanctuary for vulnerable victims and witnesses," Mr Speakman said.

"There also be a new jury assembly room, two interview rooms and a waiting area which will provide a more welcoming and comfortable space for court users."

To add the final touches, some minor landscaping will be done after the build's completion at the end of July.

Court sittings will continue as per usual during construction, but the Banna Avenue entrance will be closed and access will be via Ulong Street.