CI or NC:MR

I present a case to confirm the selection of certification must have a project. In a lot of 3900sqf there is a two-storey house with a total area of 4500sqf built on an area which over the years has changed from residential to commercial. The owner has made ​​a lease for 10 years of the lot, with all the home built to a bank branch, because now the street has become commercial use. The bank branch has developed an architectural proposal for modifications in the home without demolishing the lot at 100%, it is estimated that approximately 4840sqf culminate. This intervention has an extension on the second floor, and a reduction in area occupancy of the facade to give option to park users; also walls within the project will be demolished to make a distribution according to a bank branch. New specialties to the project (electrical, sanitary, air conditioning, mechanical, etc..) Will be proposed and currently not supply future needs. Considering this should register the project for LEED-CI certification or LEED NC: MR?. If more Scopes are required to resolve this consultation do not hesitate to submit it.