What if a project has small retail stores on the bottom floor, less than 3m long, and the ground outside doesn't belong to the property owner but the municipality (and therefor not possible to install exterior systems as grates or mats)?

For instance if a retail store in this building only is 2m long (perhaps a locksmiths shop), is a 2m long mat sufficient enough and the property can earn 1 point in Option 1 (if also pursuing Option 2)?