Connecticut Real Estate Sales with Property Assessments, 2001-2023

Real estate sales records for Connecticut are maintained by the Office of Policy and Management, covering transactions with a sales price of $2,000 or greater. Data is reported by grand list year, covering sales from October 1 through September 30 annually from 2001 to 2023. The dataset includes details on property type, sale amount, assessed value, and location for each transaction.

Use Cases

• Analyze sales ratios (Sales Ratio) between Sale Amount and Assessed Value to identify market trends or assessment accuracy.
• Model property values (Assessed Value) based on features like Property Type, Town, and Residential Type.
• Map sales density and price trends (Sale Amount, Date Recorded, Location) across Planning Regions or Counties.
• Classify property transactions (Property Type) using features such as Address, Town, and Assessor Remarks.

Strengths

• Covers a 23-year time range from 2001 to 2023.
• Includes 18 columns with property details, location, and financial metrics.
• Data is collected under Connecticut General Statutes, providing a legal basis for collection.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Some municipalities may not report data for years following a property revaluation.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Office of Policy and Management, State of Connecticut (data.ct.gov).

Collection Method

Collected from municipalities in accordance with Connecticut General Statutes, sections 10-261a and 10-261b.

Time Range

2001 to 2023 (by grand list year, October 1 to September 30).

Freshness

Last updated 2026-03-19 19:50:23; freshness should be verified.

Geography

State of Connecticut, United States, with town-level granularity.