Renovation refers to the process carried out to upgrade an existing structure to improve performance by either altering the scope of structure, providing additional facilities or improving existing facilities.
While a remodel is changing the form of something (adding a new shower to an existing bathroom), renovation focuses more on restoring something old into good repair (fixing up a creaky floor, for example, or taking on a kitchen renovation cost)
Demolition means dismantling, razing, destroying or wrecking any building or structure or any part of it by pre-planned and controlled methods. Based on demolition surveys, a demolition plan is prepared. This demolition plan is produced with the application for approval of demolition to the local authority.