Where does four rooms beating one house stop being true?

Question

Everything written about this model says renting four rooms beats renting the house. Fine. But the premium has to have a ceiling, because at some point the per-room rent times the number of rooms exceeds what anyone will pay to share a kitchen with five strangers, and you're competing with actual studio apartments.

I've been mapping it in one market. Whole-house 4-bed rents around 2,400. Rooms in comparable houses list 700 to 800, so call it 3,000 gross at the top, a 25% gross premium. A studio in the same submarket goes for 1,150. So room rent at 800 is 70% of a studio, and a tenant is giving up their own kitchen and bathroom for a 350 saving. That gap feels thin to me. If studio rents soften 10%, the room product loses its reason to exist and my 25% premium goes with it.

So where does the density advantage actually come from, the rent premium or the fact that six people can afford one house that none of them could afford alone? Because those two answers imply very different markets to buy in.

Rena Expert · Accepted Answer

The density advantage comes from the affordability spread, not from charging a premium for shared living. Your studio comparison is the right test and you've already found the answer in it. Where a studio is 1,150 and a room is 800, the room product is fragile, because the tenant is paying 70% of the private-unit price to share. Where a studio is 1,600 and a room is 800, that tenant has no realistic alternative, and the room stays full in a soft market. The markets where this model holds up are the ones with a wide gap between per-person shared cost and the cheapest private unit.

So the submarket screen isn't room rent versus whole-house rent. It's room rent versus the cheapest legal private unit within commuting distance of the same jobs. If that ratio is above roughly two thirds, you're selling a small discount and competing against privacy, which you lose.

One thing your model probably understates. Your 25% gross premium is calculated before the operating costs that only exist in the room version. Utilities you pay instead of the tenant, furnishing and its replacement cycle, common-area cleaning, per-room placement fees, and management priced per lease rather than per unit. On a 4-bed those can absorb most of a 25% gross premium. The strategy generally needs a larger gross spread than 25% to produce more net than a single lease, which is part of why operators push toward five and six rooms, and that's exactly where occupancy caps and HOA restrictions start binding.

The other risk in your framing is that soft studio rents and soft room demand tend to arrive together, since both respond to the same local job market. Treat them as correlated rather than independent.

omar_haddad · Answer

The renovation side of this agrees with the ratio point in an ugly way. Adding a fifth or sixth legal bedroom means egress windows, sometimes a second bathroom, and once you're touching walls the scope grows on its own. I've watched a plan for one extra bedroom turn into a subfloor and a panel upgrade. If your net only works at six rooms, you're betting on a renovation estimate as much as on the rent spread.

megan_doyle15 · Answer

Windlass, when you say cheapest legal private unit, do you mean a studio or does a converted basement apartment count? Asking because the listings I look at are full of things that are clearly one room with a hot plate.

Where does four rooms beating one house stop being true?

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