One new fire station is set to be built in Lincolnshire every year.
The decision follows an assessment of facilities at every station in the county by fire service inspectors.
Renovations are due to start at sites in Bardney and Wragby which are in the worst condition. County councillors are set to approve the plans on Thursday.
Some of Lincolnshire's fire stations were built in the 1950s and are not serving the needs of a modern fire service, according to firefighters.
The renovations follow concerns that the buildings were inadequate for the equipment they house.
Wragby Station officer Chris Moore said: "It will give them a nice clean, safe environment to work in.
"It will mean they can get around the fire appliances and have safe access to their place of work."
The training of firefighters, in Lincolnshire, which has the highest number of retained officers, is often hampered because the buildings are unsuitable.