The valuation process is rather complex and depends on a host of factors and should be carried out by a specialist valuer. Once you have your valuation your lawyer will prepare a form of notice for service on your landlord which will get the process underway. What follows entails the receipt of counter-notices and thereafter negotiation and agreement of terms, all of which have prescribed deadlines. For this reason, it is a good idea to find professionals who are experienced in this area of work, starting with a specialist solicitor and a valuation surveyor. They will work for you to ensure you get the best terms possible.