Mirza Asadu'llah was the first to undertake the organization of a local House of Justice in Iran. He took the initiative to invite eight other prominent believers to form a body, responding to the laws of the Kitáb-i Aqdas , which they referred to as bayt al-'adl (House of Justice) or bayt al-a'zam (the Most Great House).

The organization of this first House of Justice was kept a secret, even from the believers. However, it met sporadically in the home of Mirza Asadu'llah for a couple of years. After consulting with this body, the prominent Bahá'í men who had been invited to attend its meetings would seek to take action as individual Bahá'í teachers that would implement its decisions.

Around 1881, the Tehran House of Justice was reorganized and more members were added. The House adopted a written constitution and pursued its activities with more organization and vigour than before. The constitution mandated, however, that the meetings remain strictly confidential, hidden from the body of the believers. [The Service of Women on the Institutions of the Baha'i Faith]