For now, at least, I plan to offer fairly simple animations with a limited amount of detail, that will give clients a good sense of what their new home will look like on the inside and outside but will certainly not be considered photorealistic. I can add more detail and complexity to animations for clients who are interested in paying for that level of detail.
Below are a flyaround and a walkthrough of a current project that I did as experiments. The videos can be paused at any point to take a longer look at a particular area.