SWOT analysis required - Property business

My business is a guaranteed rental scheme for residential property. We are called Fixed Rent. The business is at a pivotal point and Im expecting rapid growth imminently. We are just starting to franchise the business, running a national PR campaign and word of mouth is taking over.
I need someone to analyse my business and produce a SWOT analysis report. Im mainly interested in the Threats. What problems should i expect and what can i do to to prepare for it?
I am looking for someone who is preferably a business advisor/analyst by profession and has significant experience in property and residential lettings.