@Farshad Mansouri
I typically use the following as a starting point and then adjust based on location, condition of property etc.:
Vacancy - 6-8% (highly dependent on area - I only look in high quality areas)
CapEx - around $150 for a 1,500 sqf SFR (highly dependent on quality of property, location, if you are rehabbing the property upfront, and how long you are planning on keeping the property). Do not use % allocation for CapEx because CapEx does not change with value of property (it will change based on size of property however so need to consider that aspect)
Maintenance - I typically bake this into CapEx costs which puts the total closer to around $225 for a 1,500 sqf SFR (also dependent on quality of property, upfront rehabbing, etc.). I've heard people using around 15% for both CapEx and maintenance but again, CapEx as a % of rent does not make sense IMO.
Property Management - 11%
I am not sure about utilities - Not something I would pay.