The very next morning, District Administrator Pilgrim from Meschede in the town to kick off the reconstruction. This was completed less than three years later. The reasons for this were the simple Arnsberg The reasons for this were the simple development plan put together and the good financial situation of the people of Schmallenberg - despite the catastrophe - as the Prussian fire insurance and numerous relief supplies supported the citizens. The new Arnsberg planned on the drawing board envisaged that Schmallenberg resembled a ladder due to the two parallel main streets with their cross streets. The larger properties were located on what is now Weststraße. It was a very simple but effective layout, the distribution of the plots along the streets was simpler and it was possible to maintain and even optimize the development on the ridges above the Lenne and even optimize it, as the town area could be doubled by demolishing the town wall.

Due to the widening of the main streets, the detached houses are now built in an eaves position, i.e. with the roof sloping parallel to the street side. Two roof types can be found in the Schmallenberg town center: the gabled roof and the crippled hip roof. The houses were all symmetrical, with three or five axes, and the entrance to the house was always in the middle. The Schmallenberg houses were based on the classicist architectural style, but also reflected the typical Sauerland style: they were covered with slate from the region and plastered white to recall the old half-timbered buildings. Despite this architectural uniformity, the town center does not appear dull at all; but complements each other to form a cohesive whole. This is also ensured by the fact that new buildings blend in with the old patterns.