I am an experienced UK property developer focusing on buying houses and converting them into HMO's. I then let the properties as a landlord. I would like to move in to buying, developing and selling property alongside my current HMO strategy. I would appreciate some guidance on what is the most profitable out of the following possibilities; sub-division of a building into a number of flats; new-builds or renovating a single house or flat including adding a loft conversion and/or extension? What makes a developer go for a particular project over another? It has been suggested to choose a development strategy and stick to it consequently becoming a specialist in that field. Again when choosing the strategy what factors are to be considered? Any experience shared would be much appreciated.