Bonomi's earliest known independent work dates from 1784. After this he quickly became a successful designer of country houses. In 1789, he was elected an Associate of the Royal Academy, and from then on constantly exhibited architectural drawings. Joshua Reynolds, president of the Academy, had wanted Bonomi to become a full Academician, regarding him as a suitable candidate for the vacant chair of perspective; the majority of the Academicians were, however, opposed to this suggestion, and Bonomi became an associate only, and that merely through the president's deciding vote. Reynolds resigned his presidency in protest, but was soon re-elected.