40,511 ZIP codes priced · 33 cities read from the ordinance · 50 state and territory rules covering every market

Know what every room can earn — and whether you can legally rent it.

Type any US address. RoomSpread returns estimated shared- and private-bath room rents (priced per week, the way this market actually trades), how the ZIP ranks nationally, and what the local municipal code actually says about renting by the room.

Try 30310 Atlanta · 48214 Detroit · 20009 DC · 33146 Coral Gables — the last one to see a market where the rooms rent well and the buildings still don't work

40,511ZIPs priced
28,921Cities covered
$158Median private room, shared bath / wk
$210Median private room / week
Market read for this ZIP

Private room, shared bath / wk
Private room, private bath / wk
Private-bath uplift
per room, per week
National rank
of 40,511 priced ZIPs
vs. its metro
RoomSpread Opportunity Score

What does the building cost?

The score above is a market read. It cannot tell you whether a specific building works, because it has never seen the price. Put it in and we will do the arithmetic.

What the house could gross

Move the sliders. This is gross scheduled rent at 100% occupancy — the underwriter takes it through vacancy, expenses and debt.

Gross / month
Gross / year
Rooms
Run the full underwriting →

Can you legally rent it by the room?

Insufficient information

Nearby ZIP comparables

The closest priced ZIP codes. These are ZIP-level model rates, not individual room listings — see methodology.

ZIPCityMiles SharedPrivate vs. subject
Why this exists

Short-term rentals have AirDNA. Long-term has Rentometer. Rent-by-the-room has nothing.

This is built for investors — someone deciding whether to buy a house and rent it by the room, or whether to convert one they already own. Today that decision gets assembled by hand out of marketplace listings, a municipal code PDF, a spreadsheet and a guess. Two of those three are now on this page.

Rates

Weekly shared- and private-bath room rents for 40,511 ZIP codes, with national and metro percentile ranking so a number has context instead of sitting on its own.

Rules

33 cities read out of the actual municipal code — occupant caps, when it becomes a rooming house, licensing, state preemption — each with its source.

Returns

An underwriter built around room economics, not an apartment calculator with the labels changed: per-room vacancy, turnover, utility caps, break-even occupancy.