Searching for a good architect you should look at the page – extravagauza3dvisualisation.co.uk. There you will find an offer of the computer visualisation of the interior.
1) If you want to see how it will look before you start building a proper construction, such visualisation is the best idea.
2) Demanding investors can apply a number of changes in the project in way to create a perfect project. This approach allows to avoid unnecessary misunderstandings between architect and investor. Thanks to the visualisation we can imagine the effect of the renovation.