When converting an existing property to a new use it can prove both an exciting and rewarding experience both financially and personally. This will require planning permission and building regulation approval. The planning can add value to your building as soon as it is granted this is called the planning gain and some property speculators and property developers simply focus on adding value to their property and projects and then selling a property ready to develop. The next consideration is the building regulations approval these can be both onerous and expensive depending on the type of property and the end use. If you are converting older properties or carrying out a mixed use property development the building regulations and other statutory requirements need to be carefully planned and budgeted. With sub division of properties there is an issue called compartmentalisation this is where individual residences flats or muse dwellings or separate commercial units need to be separated from each other. This is when the individual units are separated or compartmented from acoustic and fire spread from the neighbouring units. When carrying out conversions over many floors or in period building this can require careful planning as some services like drainage will need to pass through or from one unit to another. Sound or acoustics requires a carefully specified design and good onsite installation as the units will have to be sound tested upon completion. The integrity of the buildings fire separation between units will be inspected at the site visits by the building control officer. It is important to get a good building contractor on board who has experience on this type of work and can check the design options and advise on cost savings and value engineering. This could save you thousands of pounds and their experience can prove very valuable when any issues that have not been seen or discovered becomes an issue on site.