Internal Alterations are usually straightforward with it simply being a case of knocking down current walls and/or putting in new walls to create new rooms....

The most important thing is when existing walls are being knocked down that you have checked they are not supporting walls or have an additional function in the overall structure of the house rather than just separating rooms. Make sure you ask a builders advice on this before starting any work.
Because internal alterations result in the creation of either a new room, bathroom or kitchen there are no specific tips for sale for this section.