The Address Index
Greenwich, Connecticut · Interactive market data

Greenwich Home Price Index: 2001 to Present

Explore the Greenwich CT Address Index, a repeat-sales home price index tracking the same single-family properties from 2001 to today.

Through September 2026

Index revised Sep 19, 2026. The 2026 Q2 Address Index reading was revised from 105.7 (-1.7% YoY, nowcast) to 120.7 (+11.4% YoY, reconstructed).

Newer public parcel sale histories added 447 usable sales and extended the fitted repeat-sales index from 2025 Q3 through 2026 Q2. Quarters after the latest state transaction file (2025 Q3) are now estimated from those reconstructed repeat-sale pairs instead of the monthly-report nowcast, and 2025 Q2 and Q3 were revised up as more pairs were added.

Methodology and full revision history →

Quarterly quality-adjusted repeat-sales index for Greenwich single-family homes from 2001 through the current nowcast, with confidence bands and 2024 average = 100.

The Address Index uses 25,001 public transaction records and 5,514 filtered same-property pairs. Direct observations run through 2025 Q3; later periods are visibly reconstructed or nowcast.

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What this chart measures

The Greenwich Address Index measures price change using repeat sales of the same homes. That reduces the distortion caused when one month contains a different mix of properties.

How to read it

The 2024 average equals 100. A reading above 100 indicates a higher quality-adjusted price level than the 2024 average. Solid observations use completed records; the dashed ending is a labeled nowcast while public transactions catch up.

Why it matters

Greenwich monthly medians can swing when a few very large estates close. Same-property evidence offers a more intuitive answer to whether the underlying market moved.

Latest reading: The Address Index uses 25,001 public transaction records and 5,514 filtered same-property pairs. Direct observations run through 2025 Q3; later periods are visibly reconstructed or nowcast.

The Address Index is independent market intelligence based on public and source-linked records. It is not an appraisal, brokerage opinion, or investment recommendation.

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