In Hwaseong Temporary Palace, there are several historically significant buildings such as Oejeongriso, Bijangcheong, and Seoricheong.

Firstly, Oejeongriso served as a provisional bureau responsible for preparing and overseeing all expenses related to the Joseon king's visits to Hwaseong Temporary Palace. Originally established in 1795 during the 19th year of King Jeongjo's reign in the Joseon Dynasty, it was organized for the preparation of his mother, Hyegyeonggung Hong's 60th birthday royal banquet when it was held at Hwaseong Temporary Palace. It was named Oejeongniso to distinguish it from Jeongriseo in the capital. Typically, the role of the Jeongrisa, similar to the minister of finance, was carried out by Hojo Panseo, but in Hwaseong, the role was usually fulfilled by Hwaseong Yusu, a counterpart to the local administrative minister.

Bijangcheong is another noteworthy site. It served as the workplace for Bijang of Hwaseong Yusubu, who were staff officers serving various officials. Despite being secretaries, they wielded significant power as they worked for influential authorities. Bijang would conduct audits and discreetly examine the lives of people.

Additionally, Seoricheong functioned as a place where clerks carried out their duties within a town. Seoris were officials responsible for recording village events and related tasks. A small village typically had about 20 officials, while larger ones like Hwaseong Yusubu had around 80 officials. Moreover, during King Jungjo’s mother, Haegyeong Hong’s 60th birthday banquet, Seoricheong was utilized as Suragan, the royal kitchen.