In regards to things to look out for when viewing a house, consider those that are unavailable from photos, for example:
Good parking spaces
Noise around the area
Signs of damp and mould
Anything in need of repair such as the roof
Observe walls for large cracks
Check out the garden and its condition
The above checks may not determine whether you are going to buy the house or not, but at least you are aware of them, and can factor the cost involved if they need to resolved or repaired. You can also appreciate if you they can be overlooked in the short or long term.