A recent study by Lower, using over a million active single‑family listings from its Movoto portal, reveals just how dramatically the cost of an additional bedroom can differ across the United States. The analysis covered 255 cities with populations of at least 100,000 and compared median list prices for two‑, three‑, four‑ and five‑bedroom homes.
National averages
Nationwide, moving from a two‑bedroom to a three‑bedroom home adds an estimated $648 to a monthly housing payment. Adding a fourth bedroom adds about $764, and a fifth bedroom adds roughly $812 per month. While the dollar amounts rise with each extra room, the percentage increase is steepest on the first upgrade: a median 35.3% jump from two to three bedrooms.
Local extremes
High‑cost coastal markets dominate the upper end of the spectrum. In Fort Lauderdale, Florida, the premium for moving from four to five bedrooms is $3.1 million at purchase price, translating to an estimated $20,991 higher monthly payment – more than many families pay for an entire mortgage elsewhere.
California’s Carlsbad shows a similar pattern: the median price jump from two to three bedrooms is about $900,000, or $5,662 more each month.
Conversely, several Midwestern cities see the opposite extreme. In markets such as Peoria, Illinois, adding a fifth bedroom raises the monthly payment by only about $16. In many Midwestern cities, the cost of an extra bedroom ranges from $16 to $39 per month, making the decision a matter of preference rather than budget.
Why the gap is so wide
The study notes that local market conditions—home prices, property‑tax rates, and homeowners‑insurance costs—drive the differences. Where listings are scarce or skew toward higher‑priced properties, a three‑bedroom home can even list below the median price of a two‑bedroom home in 19 cities, reflecting market composition rather than a loss of value.
All estimates assume a 30‑year conventional fixed‑rate mortgage at 6.250% with a 5% down payment, and include principal, interest, taxes and insurance. The analysis reflects listing prices, not final sale prices, and does not adjust for square footage, lot size, age or condition.
Takeaway for buyers
While national averages provide a useful benchmark, the study underscores that where you buy matters as much as how many rooms you add. In some locales, an extra bedroom barely affects the monthly budget; in others, it can reshape a household’s finances entirely.
Original reporting: KTVZ (Central Oregon) — read the source article.
