The owners of Kansjarvi Manor are known since 1549, and the history dates back to the 17th century. The present main building dates from the beginning of the 19th century, and has been reconstructed afterwards. The granary was built in 1888.

Karuna Manor was one of the most important manors in the 16th century, and the owners are known since the middle of the century. The main building was built in 1556. It was severely damaged during the war in 1713-1721, and was abandoned for few decades. The building was restored in the end of the 18th century, and remodeled in the late 19th century with romantic image and some Neo-Gothic elements.

The owners of Kaskinen Manor are known since the 15th century. The present main building was built as an outbuilding of the manor in 1923, and converted into the main building in the beginning of the 1930s. The water tower of the manor was built in 1923, and was styled after a tower of Vyborg Castle.

The history of Katrineberg Manor is known since the 16th century. The present main building was built in around 1800 in the Empire style. It is located on the top of a hill, and there is a hospital next to the manor at present.

Kehla Manor was founded in 1683, but the owners are known since 1540. The present main building was built in the 19th century, and was reconstructed in 1900. The granary dates from 1820.

The owners of Kellokoski Manor are known since the 17th century, and Kellokoski Ironworks was founded in 1795. The Ironworks is also known as Mariefors Ironworks. The main building was built in 1884-1889, and was designed after Renaissance Palaces of Italy. It was enlarged and remodeled in 1914-1915 to serve as a hospital, and the building is still used by the hospital at present.

Kerava Manor is also known as Humleberg. The history of the manor dates back to the 16th century. The present main building was built in 1810, and the current appearance is from 1928. The manor building complex has been destroyed by fire several times, and they were also severely damaged by a Russian attack in the beginning of the 18th century. The manor is owned by the town at present.