I went down yesterday to ring their bell (it's second floor of a multi-family) and no answer.Should I be concerned?

New floors, paint, updated kitchen and bathrooms, as well as fixing stuck windows, stubborn doors, certain appliances.

I live in NY and I found a two family property asking price $529K each floor has two bedroom and one bathroom and a finished basement. each floor can be rent for $1700 and basement $1200. 

I can paint, clean up trash, etc. - but my time is better spent searching for new deals and working with clients.

@Jill Buhrfiend and to piggy back on what Ned said about granite tiles depending on your square footage you may be able to find enough at a restore or a local flooring store might be holding on to enough remnants from a previous job.

Do you walk around the outside 1st and look for structural issues or do you go right inside and see the status of the flooring and walls and kitchen?

These homes will need floors, kitchen, baths paint, etc. 

I pay every after cleaning. 1/4 of the gross income I have goes to cleaning.

It just causes them to leave the house and pack up the dog and clean up etc.

Hello-It is a SFR, 3Bed/2Bath; they just had their 8 year long tenant move out so fully renovating the place, new vinyl wood floors throughout  (COREtec performance plus), new kitchen -cabinets, counter tops, flooring, new SS appliances, 2 full bath remodel (showers) new paint (getting the gray tones) as well as paint exterior.