What do you think about using all the same color paint for each rent house?

Most original wood windows need to be replaced, HVAC will need to be installed, both kitchens need updated, all bathrooms can use updates, painting all around, refinishing the original hardwood floors, adding new/nicer carpet in the bedrooms. 

You will also need to disclose lead paint as well if your house is built before 1978. 

And doesn't insult my intelligence by telling a tear down just needs "paint and carpet".

What's the best way to paint a house that is being renovated (to be flipped)?

What's the best way to paint a house that is being renovated (to be flipped)?

I may want just a little paint, carpet, and touch-ups if need be.  

That apartment has been occupied for the last 10 years so it's not like we will charge them for carpet and paint or much of anything at move out.

I would say you need to plan for the following to happen to you during the next 15 years:- May need to drop rent by $200/month for a while due to market conditions- May have 2-3 months of lost rent due to vacancy and/or eviction- Broken garage door opener, hot water tank, furnace, or appliance requiring a repair man and possible replacement- Need to replace carpets or re-paint the entire unit and it's not covered completely by damage deposits.- HOA fees and taxes continue to go up every year but may not be possible to increase the rents due to market forces.If you have a good W2 job and you can hang on for 15 years and cover these situations I would actually say you should keep the place!    

Dry wall, textured paint.....the works.