Tory PCC Adam Simmonds' plans include employing a chief of staff, four assistant commissioners, and a value for money officer.
Under the old police authority, there were seven staff members. The new organisation will have 10 extra posts.
Mr Simmonds said a team was vital in overseeing the county force.
He said: "This is not an empire. This is about building something which is brand new. No-one has been PCC for Northamptonshire before.
"The public voted for me to do a job to support frontline policing. I can't do it physically on my own."
He said his plans had been put forward to the public for consultation.
Mr Simmonds said he would be judged on whether he had achieved his objectives of more police and a reduction in drug crime.
In a report Mr Simmonds said he hoped to create three new departments, for drugs eradication, faith-based and neighbourhood initiatives, and the protection and security of the county, would also be created.
The commission will carry out the work that the previous police authority did of overseeing targets and setting budgets.
But the office also has new responsibilities of prevention and taking care of victims of crime.
For 2012-13, the budget for Northamptonshire Police is Â£120.55m - Â£2m less than 2011-12.
Savings of Â£20m have to be made over four years.
A spokesman for the commissioner said staff would be consulted about the plans in the first four months of next year.

16 May 2016 Last updated at 08:42 BST
Merafield Bridge in Plympton was detonated overnight on Saturday, as part of a Â£6.4m project to replace the structure.
The bridge, built in 1969, was damaged by alkali silica reaction, more commonly known as "concrete cancer".
Video: Highways England

South Africa-born McKerr joined Derbyshire on an initial 28-day loan deal on 31 May.
The 19-year-old took 14 wickets in two first-class games for Derbyshire.
He also became the youngest player in the county's history to take 10 wickets in a match when he took 10-141 in their defeat by Northamptonshire.
Meanwhile, Derbyshire opening batsman Luis Reece is still hopeful of being fit from a viral infection for the county's next game, the inaugural day-night Championship game against Glamorgan, in Cardiff, starting on 26 June.
Reece, 26, did not bat in either innings in Derbyshire's three-day defeat by Northamptonshire at Wantage Road on Sunday, after leaving the pitch on Friday with breathing problems.
"I was struggling to breathe," the winter signing from Lancashire  told BBC Radio Derby. "Then, a couple of overs later, I felt tightening in my chest, the paramedics were on and I was off to Kettering Hospital.
"They think it's a viral infection and it was fluid that caused the tightening of the chest. I can't do any strenuous exercise and I'm being referred to a cardiologist.
"But hopefully I will be available for the next game. I'm hoping that it's not going to be a long lay-off. And I'll know more once I've seen the cardiologist."
The new police and crime commissioner (PCC) for Northamptonshire has denied he is "empire building" with his plans for a 17-strong team.
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Footage has been released showing the demolition of a bridge over the A38 in Devon.
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Surrey have recalled paceman Conor McKerr from his loan spell with County Championship Division Two side Derbyshire, with immediate effect.