Robert,
That is a great question. I was just wondering that myself. I don't use square footage or anything like that, but I break things down more than the 50% rule, as follows:
-Maintenance and repairs: 20%
-Vacancy, advertising, turnover: 10%
-Property Management: 6%
-Use actual taxes from country records, estimate insurance costs.
Exceptions to this are as follows:
- If the property was built within the last 20 years and appears to be in good condition/well maintained I will use 18% for maintenance.
- If the property appears to be in excellent condition/very well maintained regardless of when it was built I will use 18% for maintenance.
- If the property was a foreclosure or seems to have been poorly maintained, I will use 22% for maintenance.
These are not scientific at all. I am by no means an expert. I also have a family member as my property manager, so he doesn't charge much for labor when he has to make repairs.
I've had one property for 3 years and the actual maintenance costs have been well below 10% of rents. However, I have not yet had to replace a roof, replace any appliances, or paint the exterior. This is a duplex built in 1950 that rents for $1,270.
I'm really interested in hearing what the experts have to say about maintenance costs for multi-unit vs. single family properties or those with higher vs. lower rents for a given square footage.
- MJ