Commission is calculated on a lease by the gross lease value paid to the landlord. If it’s a multi-year lease, it is paid on the gross value of the multi-year lease. For example, if a lawyer signs a three year lease, pays $2,000 a month, the lawyer pays a $24,000 annual rent to the landlord. We take the $24,000, multiply it by three years, and you get a gross lease values of $72,000. The commercial real estate broker is compensated on the gross lease value of $72,000.