I have a very distinct yet vague memory of a book I remember reading at school. It had very little text, and was illustrated, in a format similar to Jumanji or Where The Wild Things Are. The illustration style was very similar to the former - almost surreal in its hyperreality and severity - maybe a little like the style of P.J. Crook.
The narrative concerned a young boy whose father left him at home, possibly to pick his wife up from the hospital as she has just had a baby. I'm wondering if the title is something like 'The New Arrival' but I have tried countless google combinations, I just haven't been able to find it.
In the story, the boy is left alone in the house and begins to see strange things, such as faces in the walls. I remember very vividly an illustration from his point of view looking into the washbasin in the bathroom, and the plug hole has turned into a face. There's another part where the garden wall seems to have been anthropomorphised.
This was probably published in the 80s or 90s. I probably encountered the book in around 1995. It was a large hardback, but probably only had a few dozen pages. It was written in English, was not likely a translation as I recall the boy's house looking like an ordinary British house, but I may be mistaken. It was written for children but was quite 'strange'.