Finding no business, he became a partner with Herman Von Halt in a retail store, "General Commission Merchants".
The king saw Heuck's work and immediately wanted him to start building architecture in Honolulu.
Their retail store was shut down and Von Halt went on to being a merchant while Heuck started building for the king.
[citation needed] Theodore C. Heuck signed a contract stating that any building he constructed would be free of flaws.
Before starting, Heuck was given a contract on May 26 which stated that he would be responsible for any flaws that may occur when finished with any piece of architecture.
At that time, the Hawaiian race was seriously threatened by different types of disease brought to the islands by foreign visitors.
The trustees thanked Heuck for his hard work and promised that his name would be placed on the building, but he did not receive any money.
[5] Heuck was appointed to the Privy Council from 1863 ro 1864, and then elected a representative to the legislature of the Hawaiian Kingdom from 1864 to 1867, and served as the secretary of the Board of Health.
The Queen's Medical Center has become a major provider of health care to the people of Hawaii and stands near downtown Honolulu on Punchbowl Street.
In 1870 Attorney General Stephen Henry Phillips claimed that Heuck was buying stolen whalebone to construct a building.
Heuck was later attacked for getting "no bid" contracts on government projects while effectively serving as Director of Public Works.