40 Allyn St, Groton — property record card
Single family built in 2024, 1 bed, 1 bath, 650 ft² in Groton, appraised at $931,600 (assessed $652,120); last sold for $1,220,000 on December 19, 2025.
Rebuilt from the public Connecticut CAMA and Parcel Layer — not the official card. For the official card, with owner, photo and sketch, ask the Groton assessor’s office.
Parcel
| Location | 40 Allyn St, Groton CT 06355 |
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| Parcel ID | 261913127937 |
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| CAMA account | 34250-261913127937 |
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| Use | Single family (state use code 101) |
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| Zone | RS-20 |
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| Planning region | Southeastern Connecticut |
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Valuation — revaluation 2021
| Appraised (market value) | $931,600
land $171,500 · building $760,100 |
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| Assessed (70%) | $652,120
land $120,050 |
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Building
| Year built | 2024 |
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| Living area | 650 ft² |
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| Rooms | 3 |
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| Bedrooms | 1 |
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| Bathrooms | 1 full |
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Sales
| Last sale | $1,220,000 — December 19, 2025 |
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What this means
- Connecticut taxes property at 70% of its appraised market value: the assessment $652,120 times the town mill rate gives the yearly tax.
- Groton last revalued in 2021. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.
- Assessed 195% above the median for this use in Groton ($221,410, 7,274 parcels).
- The last sale price is 31% above the appraisal.
Point at the centre of the parcel — not a survey.
Data: Connecticut CAMA and Parcel Layer (2026 collection, CC0), retrieved October 31, 2026. Sources and freshness. No owner names are published.
The report for 40 Allyn St
This card shows what the assessor records. The report adds what lies around the parcel: FEMA flood zone, wetlands and watercourses, aquifer protection area, Natural Diversity Database areas, brownfields nearby and sewer service.
$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)
Order the report