
Unless you are particularly secluded from neighbours and passers by, it will encourage nuisance barking. After all there is no-one there to tell them to be quiet, so they will bark at every visitor to your house and probably adjoining properties, as well as people in their gardens, especially if it gets them attention, or they have a high guarding instinct.
I have a Double Kennel and run, with a 10 x 12 foot run attached, whose door is always open, as the only time the run is in use is when I have pups. the girls sleep two per kennel, but are always in the house (kitchen), with the radio on if I am out.
I have often walked my dogs past houses where there are, dogs left out, and they always bark, so probably do at everyone that comes by, not conducive to good neighbour relations.