Are you referring to the photo with the key boxes? If so, they do that so that agents taking clients to see the property can figure out which one is the correct box for the particular home. Generally, a small explanation in the agent notes will say something like "third box from left on upper row with white sticker." It may not help 'sell the home' to a consumer but it is immensely helpful to agents. In some buildings, I've had to literally open every lock box to try and find the right key.
Keybox lesson for the day:
That square white one in the upper right is at least 6 years old and no longer usable with current key systems, the reddish ones on the lower right are probably from a banks owned property and set aside for repair workers/asset managers. There are two sizes of current Supra boxes (the blue ones) with the larger ones being bluetooth compatible so I can simply use a smartphone to open the box. The smaller ones are being phased out over the next 12-24 months.
The wall mounted one in the upper right is probably for a building maintenance person (elevator, pool, etc)
The small black one in the middle is a combo box probably for an asset manager.
The larger black box in the upper right looks like a masterlock brand one and could be a homeowner's.
