The buildings, in Cambridge, Castle Donington, Taunton and Wakefield, have never opened and cost an average of £1.9m each in 2014-15.
The charges are for rent, utilities and facilities management.
Five other buildings were constructed as part of a Labour plan to regionalise fire control centres. These have been let out, saving £90.5m in future costs.
The plan, approved in 2004, was for nine control centres to be built to replace 46 separate centres across the country.
But six years later, with costs spiralling and major delays to the IT software programme, the coalition government cancelled the scheme.
Fire minister Mark Francois said: "We inherited a poorly conceived and badly delivered top-down programme to create regional fire control rooms.
"To avoid further taxpayers' money being wasted, the project was terminated after it repeatedly ran over budget and behind schedule."
The Department for Communities and Local Government (DCLG) said it had "reduced site maintenance and support costs though renegotiating contracts with our service providers" at the four empty centres.
A Freedom of Information request by BBC Somerset showed three of the four centres cost more in rent, rates and other running costs in 2014-15 than each of them did in their first full year after construction was completed.
However, the amount spent on marketing the empty centres has been cut, from £37,250 in 2012-13, to £4,030 in 2014-15.
"In 2014-15 the marketing strategy focused on using internet marketing and direct marketing, which by its nature does not incur significant spend," DCLG said.
A spokesman added the department was in "active discussions" over letting out Castle Donington and Wakefield, with interest being shown by a telecoms company.
Taunton has only had a small number of enquiries, including "a very early enquiry from a government agency in the last week".
A document published by DCLG in March said the Wakefield negotiations, which involve a bidder for a separate government contract, will resolve in July when that contract is awarded.
The March report also said there had been a number of viewings of the Cambridge centre with interest from a private sector internet security company, but that is no longer described as "live".
The marketing company working for DCLG said it would continue its current strategy until August while also looking at alternative "cost reduction initiatives" including mothballing or reducing the equipment in the centres.
Each of the vacant centres still has a £6,000 espresso machine in-situ which DCLG says are "a landlord's fixture and do not belong to the department".

Anthony Steppie, Euan Stevenson, David Gowans, Kennedy Miskimmons and Scott Steppie all appeared at Dundee Sheriff Court accused of attempting to "engage in violence with rival fans" prior to the match at Tannadice on 13 December.
They all deny the charges against them.
Three men from Dundee earlier admitted similar charges from the same day.
Anthony Steppie, 49, Stevenson, 20, Gowans, 21, Miskimmons, 39, and Scott Steppie, 21, all deny charges under the Offensive Behaviour at Football and Threatening Communications Act.
They are all charged with engaging behaviour likely to incite public disorder by forming part of a disorderly crowd and repeatedly attempting to engage in violence with rival fans prior to the Scottish Premiership clash between Dundee United and Aberdeen.
The offences are said to have taken place in Main Street and Church Street.
Stevenson faces a further charge of assaulting an unknown male by kicking him on the body, on Church Street, while Scott Steppie is accused of punching an unknown male on the head on Caldrum Street.
Sheriff Alistair Carmichael set a trial date in August and released the men on bail, on the condition they do not attend any Aberdeen FC matches in the meantime.
Four empty fire control centres are still costing the government £7.6m a year, the BBC has learned.
[NEXT_CONCEPT]
Five men from Aberdeen are to stand trial accused of trying to incite violence prior to a football match in Dundee.