Lift issue in old building

I am staying in a flat in which there was no lift since construction, But the owners staying in 3rd and top floors are planning to arrange lift in this building where there is no constructional plan while the builder constructed this building in 2001. Hence if the owners of the 3rd floor and top floor force to install lift can I put objection because where they are planning to install lift it is highly objectionable because it will obstruct the cross air circulation as well as sunlight in my drawing room. Secondly the main switch and meter room of whole building is just below my drawing room. so if any fire or anything happens in the switch room then it will become very narrow entry for emergency requirement. My question is while the owners of upper floors purchased their flat then they were very much aware that the building having no constructional plan of lift in future. So how they will install now putting others in trouble .My flat is in 1st floor. Hence request your suggestion on this matter and what legal step I can take to stop it.