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How to manage 20 residential apartments
I have no idea about India, but in many countries there are companies that specialize in property management. This means they will take on the business of maintaining the properties, finding tenants, doing paperwork and background checks, collecting rents and evicting tenants if necessary. Obviously for this they require a fee, but essentially the owner gets to sit back and do nothing except collect a cheque every month. In my country some real estate agents are in this business as well, though for 20 apartments I would be looking for a specialized firm.