In the second half of the 18th century, the village of Korochka was owned by Count Nikolai Petrovich Sheremetev (1751-1809), who held the position of secret advisor to the tsar and chief chamberlain. He became famous for founding a shelter in Moscow, providing it with significant donations. However, when Sheremetev began to experience financial difficulties, he sold his estate along with the land and peasants to the Kursk nobleman Gavrila Petrovich Shagarov, a representative of an ancient Russian family, in 1862.

Shagarov chose a convenient location for his mansion and settled there with his family. He built a two-story house, brick carriage rows, livestock facilities, and other buildings. His holdings included Dolgiy Kolodez and the village of Strigosly. To increase his income, both personal and for the state treasury, he decided to build a brick church of the Transfiguration in the village of Dolgiy Kolodez to replace the old wooden one.

To construct the church, Shagarov established a brick factory in Korochka, where bricks were made from local clay, each marked with the letter 'Sh', the first letter of his surname. The bricks were transported by horses along a marshy road and carried on shoulders. On festive and Sunday days, each parishioner brought 2 or 4 bricks. The church was built next to the wooden church and cemetery, in the center of the parish. In 1871, the temple was consecrated.

According to Shagarov's will, he was buried in the right corner of the church in a brick crypt. In 1883, Korochka was purchased by the nobleman E.K. Byutsev. The estate manager of General Byutsev in the village of Korochka, Oboyansky district of Kursk province, was David Fyodorovich Burlyuk, the father of the future artist David Davidovich Burlyuk.

The house where the manager's family lived was built in the mid-19th century. Behind it, on the slope of the hill, there was a garden that transitioned into an aspen grove, stretching along the bank of the Psla River. The house had eight spacious rooms. Unfortunately, the house has not survived. Among the neighbors with whom the manager's family shared a passion for books and music were a Polish revolutionary and his wife, as well as the Arnoldi family, founders of an agricultural school in the hamlet of Kucherov.

In the center of the village of Korochka stands a shop, the brickwork of which noticeably differs from modern constructions. According to local residents, this is the estate house of Shagarov, although historical records state that the house was two stories, and possibly the second floor was destroyed later.