HMO Article 4 research Exeter

HI I would like someone to go through the article 4 literature for the area of Exeter and note the key points. What are the restrictions Where are the restrictions What criteria will I have to meet with my HMO How much and how often to renew licence. When do I need planning to change to HMO from residential. and any other relevant information for someone who wants to develop HMOs In Exeter