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Many companies simply go about the business of operating their properties with no standardized property management plan and processes. Invoices are recorded, fees are charged, leases are completed, managers come, managers go, and slowly but surely a general way of doing business develops. No doubt for many companies, this can work.
from: http://ezinearticles.com/?Rental-Management-Standard-Operating-Procedures-Can-Save-Your-Business-Or-Assure-Your-Success&id=4508851