The ones I can think of are: allergies (other tenants might be allergic)noise (my bird is the noisy one in our household)property damage (yes, the little dog who is from California, pees in the house sometimes..ugh)Fear (my big dog is 110 pound black lab) of Dogs/Cats/AnimalsFear of lawsuits if the animal hurts someone elseI'd like to discuss what can be done to alleviate these and any other objections as much as possible.  

We are in Northern Caifornia.HOA has these rules and regulations which clearly states that there has to be carpet in the living room and bedrooms to minimize the noise to down stair units.

If you commit to the real estate path, be ready for the grind. 

So one way to look at it is this a 4 plex usually all 1 brs are going to have a tenant that want a more home like setting,, they are tired of or don't want to walk long hallways, have probably a set parking spot,have more windows, less people to deal with, and not as much noise,... that's also a selling point for you on your 4 plex.  

So you can and should hope and grind and work and network, etc. 

Short version: I have a rural property that is in a very nice area ($275K-500K Homes) but I keep getting reports about how awful the neighbors are--non stop dog barking and other noise late at night.

The exterior rehab looks very nice also.Sure wish there were deals like this in my market.Keep grinding and keep growing!

I see what most owners don't, the day-to-day grind of the business. 

Congrats keep on grinding and keep on growing!

Every deal I have done uses my day job (the grind) to base my financing on.