20 Happy Ave, Watertown — property record card
Residential built in 1954, 5 bed, 3 bath, 1,960 ft² in Watertown, appraised at $289,100 (assessed $404,740); last sold for $202,370 on December 2, 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 Watertown assessor’s office.
Parcel
| Location | 20 Happy Ave, Watertown CT 06779 |
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| Parcel ID | 134 193C 53A |
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| CAMA account | 80490-7275 |
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| Use | Residential |
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| Zone | R125 |
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| Planning region | Naugatuck Valley |
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Valuation
| Appraised (market value) | $289,100 land $55,700 · building $233,400 |
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| Assessed (70%) | $404,740 land $77,980 |
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Building
| Year built | 1954 |
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| Living area | 1,960 ft² |
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| Rooms | 7 |
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| Bedrooms | 5 |
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| Bathrooms | 3 full |
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| Units | 2 |
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Sales
| Last sale | $202,370 — December 2, 2025 |
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2 accounts on this parcel
| Address | Account | Use | Assessed | Last sale |
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| 20 Happy Ave | 80490-7275 | Residential | $202,370 | $202,370 December 2, 2025 |
| 20 Happy Ave | 80490-7275 | Residential | $202,370 | $202,370 December 2, 2025 |
What this means
- Connecticut taxes property at 70% of its appraised market value: the assessment $404,740 times the town mill rate gives the yearly tax.
- The last sale price is 30% below 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 20 Happy Ave
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