The main building dates from 1800 but owes its current appearance to a renovation undertaken after a fire in 1873.

In accordance with his wishes, she established two estates (stamhuse) for their daughters in 1781, Iselingen and Rosenfeldt (named after the family's home town, Rosenfeld in Württemberg).

On 14 June 1776, Marie (Mimi) Iselin had married to Christian Frederik Ernst, Count Rantzau.

Marie Iselin owned Iselingen from 1793 to 1803 and constructed the current main building in 1800.

The partnership had also made other speculative investments on the property market- They had for instance bought part of the Bernstoff Mansion in Copenhagen.

The estate is currently owned by Hans Mathias Munk Wassard.