I googled passed these 2 buildings a couple of weeks ago & didn't give them a second thought, but took a screen capture of them anyway.
Was going through some of the old shots & the steps caught my eye, so gave them a closer look.
The shape, dimensions & layout of windows & doors etc are pretty much exact copies of the IRL buildings, but the awnings, broken sign & colour of the brickwork made them hard to recognise at first.
If they weren't side by side IRL & in the game, they may not have been discovered.
I wonder how many other common/standard looking buildings we've let slip by.
Edit. I think the building next door (right of screen) looks like a match too. I'll go fire up the PS3.
Real life, left. Alan's Antique Restoration (left), vacant shop (right), 4910 & 4912 West Jefferson Blvd, Los Angeles.
In game. Vacant shops, Innocence Blvd, South Los Santos.