Interpreting Months of Supply Data for Fix and Flip Markets

Months of supply (sometimes called months of inventory) measures how long it would take to sell all currently listed properties at the current sales pace. It's calculated by dividing active listings by the monthly sales pace. Six months of supply is considered the boundary between a seller's market (below 6) and a buyer's market (above 6).

In practice, the thresholds vary by market segment. Single-family homes in desirable suburban areas may operate at 1–3 months of supply during healthy markets, with 4+ months signaling softening. Luxury homes and specialty properties often operate at 6–12 months of supply even in healthy markets.

For flippers, months of supply dictates pricing strategy and timeline expectations. In a 1–2 month supply market, price aggressively to create competitive bidding situations and assume 7–14 day showing-to-pending timelines. In a 3–5 month supply market, price at market and expect 30–60 day timelines. In a 6+ month supply market, price below comps to capture the active buyer pool and extend your holding cost budget.

The rate of change in months of supply is as important as the level. A market moving from 3 months to 5 months of supply in 90 days is softening rapidly, even if 5 months is technically still a seller's market. A market stabilizing at 2 months after previously being at 1 month is still strong but less competitive than before.

Segmenting months of supply by price point reveals micro-market dynamics. The overall market may show 3 months of supply, but properties under $300,000 might show 1.5 months while properties over $600,000 show 6 months. For flippers, this means aligning renovation finish levels with the segment with the lowest months of supply.

Track months of supply for your target markets at least monthly. Many MLS systems publish this data by zip code, neighborhood, and price point. Overlay supply trends with price trends to understand the market's current phase, rising prices with falling supply indicates genuine strength; rising prices with rising supply suggests a late-cycle peak.