The emergence of the place is likely to fall during the clearing time of the state expansion. The place name, which comes from Slavic, means something like "resident of the clearing" or "clearing settlement".
Laasan was first mentioned in a document in 1367. Independent community files have been preserved since 1541. At the beginning of the tradition, Laasan belonged very probably to the imperial direct rule Gleisberg mentioned for the first time in the 12th century. This came into the hands of the bailiffs of Plauen at the end of the 14th century and passed from them to the House of Wettin before 1400. When it was finally divided in 1485, Laasan was separated from the Gleisberg office, which had been administered as the Wettin care department, and assigned to the Jena office. In terms of the church, it still belonged to Kunitz as a branch, which from then on belonged to the Dornburg office.
In Jena there is an anecdote that is often told that in 1806 the Napoleonic troops (see Battle of Jena and Auerstedt) left Laasan unoccupied as the only place in the Jena area because the village was too small and could not be seen behind a mountain fold . This is contradicted by community calculations from this time, which show a French guardhouse in Laasan and a pillage of the village. (Source: Wikipedia)