Urban planning works: What are the challenges for building preservation?

The urban landscape is in perpetual change and constant expansion. Beyond new buildings and urban developments, it is equally essential to ensure the preservation of existing buildings. What are the challenges of this urban planning sector that gives a new life to former urban places?

Generally speaking, urban planning describes the techniques related to urban development. This concerns the works of architects erected by construction professionals. In the context of renewal of pre-existing buildings, the work carried out by construction workers (carpenter, joiner, cabinetmaker, roofer-zinc worker, mason, plumber-heating engineer, painter, drywall installer, electrician, tiler, glazier, etc) can be characterized under three main axes: renovation, rehabilitation and restoration. Here is an overview of these construction disciplines

Table of Contents:

• Renovation
• Rehabilitation
• Restoration

Renovation implements operations aimed at improving the condition of a given building. The work aims to modify or replace damaged materials or obsolete ones with new elements, modern and compliant with current standards. Renovation projects thus involve partial demolition work on parts to be redeveloped.

Renovations can be carried out for energy efficiency purposes, or serve to reconvert or completely restructure a given place. An old building can then find a second wind in a different form or for another function. The challenges can therefore be sanitary for dilapidated buildings, ecological through appropriate installations, or economic to make profitable a place that has fallen into disuse.

Rehabilitation is a less drastic approach since it seeks to redevelop a place, building or premises without changing its appearance. Most of the time it involves improving comfort or reducing the energy footprint.

This involves repairs or adaptations in order to use more modern equipment. It also involves bringing up to standards when the need arises. We can distinguish several levels of work, from very light work that does not involve work on common areas, to exceptional rehabilitations that call for interventions on structural work.

This latter discipline, derived from art restoration, aims to restore buildings to a given historical state. These conservation approaches seek to restore a place in order to preserve its cultural heritage. Beyond this aspect, the main challenge is to slow down the processes of alteration and deterioration.

This involves meticulous work that can lead to long-duration projects for the most precious and massive buildings (cathedrals, cultural sites). In the approach of safeguarding cultural and material heritage, we can classify preventive conservation to prevent damage from time, curative conservation and restoration. Thus, unlike renovation, the conservation and restoration stages aim to restore a historic building to a state close to its original state. However, restoration must comply with current standards, but without seeking to erase traces of the building's past.

As seen above, depending on the age of buildings, their uses, or their historical values, urban planning techniques make it possible to preserve buildings or give them a new life. These different facets of architecture and construction are thus key assets in maintaining the identity of the urban sector.