I'd be interested to know others experiences and thoughts on this matter. I've seen rules of thumb around saying that an allowance of 1% of a property's value per annum is a conservative average estimate, while others suggest closer to 3-4%. This really is one of those "how long is a piece of string" type questions, as no doubt it can vary wildly from year to year and depends on the age and condition of the property. What sort of annual maintenance expenses are other investors here generally experiencing on a per annum basis? Looking at mine, around 0.8% per annum is about right, although I've had a property sitting over 1% in the last financial year.