A six bed room rental conversion pencils at a 41 percent expense ratio, worth a second look
Take a small multifamily operator underwriting a house conversion to six rooms. Gross at 850 per room is 5,100 a month. Utilities all-in at 480, internet 90, cleaning of common areas at 260, landscaping 120, taxes and insurance at 690, repairs reserve at 5 percent, management at 10 percent of collected. That lands around a 41 percent expense ratio, similar to what a small duplex portfolio might run, which is worth questioning on a property with six leases and six turnovers a year. The piece likely missing is that turnover in a room rental does not price the same way as a full unit turn. On a duplex, a turn is two weeks of downtime and a few hundred dollars of paint. In a room rental, a turn touches only one room, so a smaller share of gross each time, but it happens roughly six times as often, and every incoming tenant has to be compatible with the sitting tenants. That compatibility risk is hard to put a clean number on, and anyone underwriting these at scale should treat both the expense ratio and the annualized turnover rate as separate line items worth tracking rather than borrowing from small multifamily assumptions.