On 3 June the Executive Committee of Bulgarian Football Union decided to reduce the number of teams in both West and East B PFG due to the licensing problems that occurred in the last 5 years.
Lokomotiv Mezdra, Sportist Svoge and Botev Plovdiv were relegated from A Group 2009/10 after finishing in the bottom three places.
On 27 July the Executive committee of Bulgarian Football Union decided that the new member of East B PFG will be FC Razgrad 2000.
The teams of Spartak Varna, Volov Shumen, Svilengrad and Botev Plovdiv, which should play in East B PFG this season, did not receive professional license and so were relegated to the next division levels.
The same is the case with the following teams from West B PFG - Marek Dupnitsa, Balkan Botevgrad, Rislki Sportist Samokov and Lokomotiv Mezdra.