Most of the wealthier mansions still standing in Siatista date from the second half of the 18th and the 19th century. Built by prosperous local merchants in two of the town's neighborhoods (Yerania and Hora), they are rectangular in plan and their comfortable upper storeys are richly ornamented.
The low entrance, usually found in the western wall, leads to an inner, flagstone courtyard ('embati' or 'mesia') around which the various auxiliary spaces are grouped (storerooms, cellars, etc.). One stone staircase communicates with the middle floor, a second with the upper floor.
On the middle floor, arranged around an inner wooden balcony, are the 'iliakos' (sun room, the main reception room) and the winter reception and living rooms ('heimoniatika'). The upper floor contains the summer rooms ('kalokairina') arranged around a central space, to the right and left of which are corridors, the lavatory and utility rooms.
From outside, the mansions resemble fortresses since their lower section (middle and ground floors), dressed with bare stone, is equipped with loopholes and only a few barred windows. Conversely, the top floor is a light construction of varnished wood with enclosed balconies ('sachnisia') at the corners and larger openings (windows and transoms).