The 31-year-old has been lured north to Canterbury by the promise of preparing a test wicket.
He will take over from Ash Head as the Hagley Park team leader and will be responsible for preparing Hagley Oval and "all the community grounds within the vicinity as well".
"It is about 40-odd grounds," he said.
Tohill did not get an opportunity to prepare a test wicket while in Dunedin.
The city has not staged a test since 2017, when the Blacks Caps hosted South Africa.
Tohill was on the staff then but he was assisting the previous head groundsman Mike Davies, who he took over from the following year.
"I think for me it's sort of wanting to do a bit of test cricket," Tohill said when asked why he was leaving.
"In recent times, they’ve obviously had a lot more tests than here.
"And I started my career up at Lincoln, so I know Christchurch reasonably well."
Tohill did get to prepare plenty of wickets for international cricket.
There were five ODIs played under his watch, including the terrific game when Ross Taylor swatted 181 not out to steer the Black Caps to a five-wicket win over England in 2018.
There have been four T20 internationals as well, plus countless domestic games during that period.
"I don't think the wickets are too different between what we'd produce for a white ball domestic game and an international.
"It's the same preparation. It doesn't differentiate too much. Obviously, there's a few more eyes on it, but you generally don't worry about that too much."
Tohill is leaving one beautiful cricket ground and heading to an equally attractive workplace, so he will still get his cricket fix.
But he will miss the people.
"You form a lot of good connections with people.
"Delta's been a great company to work for and DVML gave me the first start, so I owe them a bit.
"Otago Cricket's been very supportive of me. And then there’s the team that's worked with me over the years, they've worked hard and they're all part of the plan for it to keep going."
Tohill finishes up tomorrow, moves to Christchurch at the weekend and will start Monday.
