Saving consequential buildings is important to understanding the country's heritage. Additionally, it's an environmentally responsible practice. By reusing existing buildings important preservation is largely a recycling programme of historic proportions. Existing buildings can regularly be efficient through their use of good ventilation, durable materials, and spatial relations.

An instant advantage of older buildings is a building already exists; so energy isn't important to create new building materials and the structure is ready. Minor alterations can be made to adapt existing buildings to compatible new uses. Systems can be upgraded to meet modern building needs and codes.This not only makes good economic sense, but preserves our inheritance and is an intrinsically viable practice. Cultural resources, as identified by a nation, include buildings, archeological sites, structures, objects, and historical districts. The encompassing landscape is regularly a vital element of an unprecedented property.

Not only can major archaeological remains be devastated in the course of construction, but the landscape, designed or natural, could be irretrievably damaged, and caution is suggested whenever major physical intervention is needed in an extant building or landscape. Some practical and unsubstantial advantages of historical preservation include:

* Retention of history and providence of honors to the past aesthetics: texture, artfulness, style.
* Pedestrian and visitor appeal.
* Increased commercial worth.
* Materials and ornaments those aren’t cheap or freely available.
* Sturdy, top of the range materials (For example old expansion wood).
* Retention of building materials.
* Less construction and demolition waste.
* Less unsafe material waste or reduced need for new materials.
* Existing serviceable space for quicker occupancy.
* Energy savings : No energy utilised for demolition. No energy utilised for new construction. Reusing embodied energy for building materials and assemblies.