Yes, that’s right. These are all 3D renders. Peter Guthrie is a freelance visualization artist based in Falun, Sweden. From 1995-2000 he studied Architecture at Edinburgh College of Art, then worked for a number of Architect’s Practices including RMJM Ltd. and Richard Murphy Architects in Scotland. His work is among some of most realistic I’ve ever seen in this field. So good in fact that I only found out that the Allandale House images were 3D by digging deeper and coming across Peter’s site.
I often wonder where visualization/3D artists should draw the line when creating super realistic environments or if they should at all. The only reason I say this is because Peter’s work is almost unidentifiable as 3D work.
You can see more of his process by rumbling through his blog.