Maybe my expenses and reserves are too conservative, but I think they're reasonable:PM: 10% - actualVacancy: 8% - estimate; 1 month/year and includes annual lease-up for tenant renewal (just a few hundred dollars, so less than 8%)Repairs: 5% - estimateCap-Ex: 5% - estimateGross rent is $885/month for this 3/2 rental. 

I am using more conservative #s for capex to account for the age. 

(Mind you, some of your numbers look to be not conservative enough, whereas some might be too conservative?

I have been quite conservative in the analysis but the result is still very promising.

I prefer to be a little more conservative when running that 60 or 70 number...and do more like 55 or 65 and sometime even 50 if it a small property.This method holds true is most of the USA and most parks.

Time will tell, but in the mean time stay conservative on your purchases!

I deal just outside of those areas and I am getting 700 rent which is 8400/yr = 4200 NOI and selling houses with those numbers in the 20s. turn key. so paying 25k you would have a 16 CAPThere are a TON of ways to analyze, but this way is Conservative. and when wrong, you end up with a higher ROI. 

Be conservative with your rent estimate.

Tips: https://www.biggerpockets.com/blogs/10145/72118-sy...Bes sure you know what you are doing, stay conservative, under promise and over deliver, create relationships and understand the amount of money you are able to raise prior to putting a deal under contract. 

I like to underwrite my deals a bit more conservatively.