As a landlord in Mumbai's Pagdi system, you generally have rights regarding the redevelopment of your chawl, even if an SRA survey is underway. You can initiate redevelopment, offer alternative housing to tenants, and seek to recover construction costs. While tenants also have rights, including compensation, your position as the titleholder allows you to pursue redevelopment. Your specific rights may depend on how you acquired ownership and the documentation you possess.