Typically, to build or renovate, a land owner or a developer has to approach the civic authority concerned and get an approval for the plan. After an approval is granted, this building plan becomes a sanctioned plan and the owner has the right to go ahead with the construction.

It is mandatory for the land owner or developer to strictly follow the sanctioned plan. In case of any non-compliance, the authorities have the right to penalise the owner, including by demolishing the building. According to the Real Estate(Regulation and Development) Act, 2016, a sanctioned plan covers approval to structural designs and may also include environment clearances by a competent authority.

Unauthorised constructions not only deface land parcels but also hinder revenue generation for government authorities. For instance, some flat owners extend their balconies or gardens beyond their rightful space. This is actually illegal. Recently, the Lucknow Development Authority recommended disconnection of power and water supplies to the owners who did not follow the sanctioned building plan. Such steps could be instrumental in curbing illegal constructions across the country.