Cbfd: Have 20 houses and best thing we ever dis was get a property manager - she looks after everythng finds the est tenants and does all the hard yards - the extra 15$ a week she charges per house is well worth it :)
15bucks per week per house... wow thats cheap !
Im paying 7.5% plus GST per week of the total rental income per week and I thought that was quite a good deal for Auckland (one house), and Im sure you have a bulk discount for the 20 you have !