The original architecture of the houses on Olga Street (now Kostava Street), built at the turn of the 19th and 20th centuries, was significantly different. In the 1970s, the facades of the buildings were renovated. To alleviate traffic congestion, the roadway was widened, and the sidewalk was moved further into the buildings. As a result, the roadside portion of the ground floor was exposed, and a corridor with arches and openings, resembling a passage, was created. Commercial spaces were established parallel to the pedestrian path.

The urban complex, comprising four buildings, requires restoration once again after half a century. This time, the focus is on repairing and restoring the facades and roofs, which have been damaged by prolonged use and the adverse effects of weather conditions.  

The design brief published by the Tbilisi Development Fund called for a comprehensive study of the facades and the development of a restoration project. Specifically, the plan aimed to rehabilitate the facades and roofs of the residential buildings at numbers 6, 8, 10, and 12 on Kostava Street, all of which face the street.

Given the status of a cultural heritage monument, the primary requirement is to restore and preserve the buildings' authentic appearance. Therefore, the first stage involved conducting a thorough study of the buildings, including color analysis (to identify the original, authentic colors of the facades), an assessment of the compatibility and quality of construction materials, art historical research, a structural expert’s evaluation, preliminary architectural recommendations, and photographic documentation of the damage and structural elements.

The area where the rehabilitation works are planned was once a suburb of Old Tbilisi, known as Vardisubani. The city began to develop from Freedom Square toward what is now Rustaveli Avenue and took its current shape at the turn of the 19th century. During this time, the famous house of Melik Azariantsi and the Zemeli Pharmacy were built, leading to the district being named "Zemeli." The Zemeli Pharmacy was demolished during the reconstruction of the square in front of the Iveria Hotel (now the "Radisson"). Among the buildings scheduled for rehabilitation is the renowned house of Aramiantsi, which he built for his lover, the beautiful Evgenia Shkhiants. 

The architectural style of the buildings to be rehabilitated is eclectic, featuring elements of pseudo-classicism and pseudo-renaissance. The design incorporates a wide range of ornaments that were popular in Tbilisi during that era. The buildings are primarily two- and three-story structures.

As a result of the rehabilitation, the disrupted urban fabric will be restored, and the micro-district will maintain its original architectural character.

It is important to note that the rehabilitation of other houses in the surrounding area is also underway, which necessitates coordination between these projects.