Overhead flatlay of architectural blueprints and neighborhood street map on a wooden desk with pencil and ruler

What "Months of Supply" Tells You About the Greater Boston Market

July 18, 2026

What "Months of Supply" Actually Means

Months of supply is one of the clearest measures of market balance in real estate. The calculation is straightforward: take the number of homes currently listed for sale, and divide by the number of homes that sold in an average month. The result tells you how long it would take to sell through all existing inventory if no new homes came to market.

Think of it like a store shelf. If a grocery store has 100 units of a product and typically sells 50 per month, they have two months of supply. Real estate works the same way.

What the Numbers Mean for Buyers and Sellers

A market with six or more months of supply is generally considered a buyer's market. There is more product than demand, prices tend to soften, and buyers have room to negotiate. A market with less than three months of supply is a seller's market: inventory is tight, homes move quickly, and sellers often have the upper hand in negotiations. A balanced market, where neither side has a clear advantage, typically falls somewhere between three and six months.

Greater Boston has remained consistently below that three-month threshold, which means the market continues to favor sellers in most towns and price ranges. If you are a buyer, that context matters: moving with urgency and preparation is not optional, it is strategic.

Why This Number Matters More Than Headlines

You will see news stories about the housing market that paint broad national pictures. Months of supply at the local level tells a more useful story. A neighborhood in Middlesex County can have very different supply dynamics than the national average, or even a neighboring town.

When you work with a local agent who monitors these numbers regularly, you get advice that is grounded in what is actually happening in your specific market, not a national generalization. That is the difference between guessing and making an informed move.

Ready to make a move this summer? Let's connect — call 617-433-9225 or visit mikehughesteam.com.

market trendsmonths of supplygreater boston real estateseller's marketbuyer's marketreal estate education
blog author image

Mike Hughes

Mike Hughes is a real estate broker with over 20 years of experience in residential real estate.

Back to Blog