Realtor commission is a significant cost for home sellers, so it's good to know that the fee is not fixed or regulated, but fully negotiable.

Customarily, buyer and seller brokers have a share of 3% each but the future of real estate broker commissions is uncertain given several rounds of litigation that may ultimately change those practices in the coming months or years.

In light of this, data from Homebay on the highest average realtor commissions reveals where the fees may change most dramatically. 

The five states in this ranking with the lowest average realtor commission have an average rate of 4.94%. The average total commission on a $300,000 home in these states is $14,832.

Scroll through to see which 20 states have the lowest commission rates and how they compare.

Source: Homebay