My neighbour is building his house just near my boundary wall leaving no margin on his side. On ground floor, he didnot open any window on our side. But on first floor, he opened a window on our side leaving no margin. We asked him to close the window as he has left no margin, but he refused to do so.
This is deviation.
"Deviation" means any construction made in departure from the approved plan by way of alterations or additions, modifications in the total floor area, coverage, floor area ratio (FAR), setbacks, height, parking space, provision of public utilities etc.;
If this deviation, which in your opinion is an unauthorised construction and is depriving your rights of ventilation or privacy, leaving no Space to be left about the building to secure free circulation of air, admission of light and access is causing you disturbance and torture, you may issue a legal notice to him to stop the construction of widow at your side without leaving the space required to be left as setback area, failing which you may file a mandatory injunction suit against him restraining him from constructing the window on yor side without following procedures and also to remove the windows already constructed violating the building construction norms.