I want to demolish a double storyed building and reconstruct a G 4 Building on a

The Floor area (FAR) , height of permissible new building and Built up area will depend on which locality and the street / road on which you want to construct this new property and to be sanctioned as per KMC rules.

I can help you with the entire project including Demolition, Sanction and Construction of new building, if you wish I can be contacted at 9830037635, mail: vikasthakker@hotmail.com.

Presently I am handling an exactly similar project near Kalighat Metro, which is now under construction.

Thanks

Vikas Thakker

The build up area depends upon the authorities your area.

The construction cost will be around 1000-1200/Sq.ft of the covered area.