140 Hawthorne Ave 142, Derby — property record card
Residential built in 1912, 6 bed, 2 bath, 2,503 ft² in Derby, appraised at $557,200 (assessed $390,040); last sold for $645,000 on October 20, 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 Derby assessor’s office.
Parcel
| Location | 140 Hawthorne Ave 142, Derby CT 06418 |
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| Parcel ID | 9-4 34 |
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| CAMA account | 19550-2121 |
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| Use | Residential (state use code 100) |
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| Zone | R-5 |
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| Planning region | Naugatuck Valley |
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Valuation — revaluation 2025
| Appraised (market value) | $557,200 land $63,800 · building $477,800 · outbuildings $15,600 |
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| Assessed (70%) | $390,040 land $44,660 |
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Land
| Lot size | 1.00 acres (43,560 ft²) |
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Building
| Year built | 1912 (effective 2012) |
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| Living area | 2,503 ft² |
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| Rooms | 12 |
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| Bedrooms | 6 |
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| Bathrooms | 2 full |
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| Condition | 1 |
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| Units | 2 |
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Sales
| Last sale | $645,000 — October 20, 2025 |
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Within about 500 m (a third of a mile): 2 sites of the state brownfield inventory. Brownfields in Derby.
What this means
- Connecticut taxes property at 70% of its appraised market value: the assessment $390,040 times the town mill rate gives the yearly tax.
- Derby last revalued in 2025. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.
- Assessed 83% above the median for this use in Derby ($213,150, 3,886 parcels).
- The last sale price is 16% above the appraisal.
- Built before 1978: lead paint may be present; Connecticut law requires disclosure to a buyer or tenant.
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 140 Hawthorne Ave 142
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