Transaction record
- Sale price
- $4,100,000
- Recorded date
- Jan 16, 2026
- Evidence
- Supplemental state parcel sale history
- Confidence
- Supplemental
Observed public-record sale
331 Round Hill Road
Recorded January 16, 2026 in Greenwich, Connecticut.
Recorded sale price$4.10MSupplemental evidence
Latest public parcel profile
- Main living area
- 5,257 sq. ft.
- Land
- 4.00 acres
- Year built
- 1758
- Bedrooms
- 6
- Total rooms
- 13
- 2025 assessed total
- $2,817,920
- Assessment neighborhood
- 180100
Parcel facts are the latest owner-free public assessment context and may postdate this transaction.
Synthetic Twin · untouched historical test
What comparable public records implied before seeing this sale
This transaction was in the model’s untouched test subset. The comparison is historical model evaluation—not a current appraisal.
Model midpoint$5.15M
Likely range$4.31M–$6.15M
Recorded vs. midpoint-20.4%
Model confidenceMedium
Observed history at this normalized address
2 recorded sales
Jan 16, 2026$4.10MSupplementalCurrent record
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Method guardrail
Nothing here is a fictional transaction
The sale row is preserved from a real public record, with its source and evidence grade. Where government sources conflict materially, the transaction is excluded rather than averaged into a made-up price. Model outputs, when available, appear in a separately labeled comparison panel.
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