16 William St, Norwalk — property record card
Single Family built in 1945, 3 bed, 2 bath, 1,692 ft² in Norwalk, appraised at $465,900 (assessed $326,130); last sold for $550,000 on July 3, 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 Norwalk assessor’s office.
Parcel
| Location | 16 William St, Norwalk CT 06851 |
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| Parcel ID | 56060-5-3A-44-0 |
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| Use | Single Family (state use code 101) |
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| Zone | B |
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| Planning region | Western Connecticut |
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Valuation — revaluation 2025
| Appraised (market value) | $465,900 land $212,760 · building $253,140 |
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| Assessed (70%) | $326,130 land $148,930 |
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Building
| Year built | 1945 (effective 1987) |
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| Living area | 1,692 ft² |
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| Rooms | 7 |
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| Bedrooms | 3 |
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| Bathrooms | 2 full |
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| Condition | average |
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Sales
| Last sale | $550,000 — July 3, 2025 |
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What this means
- Connecticut taxes property at 70% of its appraised market value: the assessment $326,130 times the town mill rate gives the yearly tax.
- Norwalk last revalued in 2025. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.
- Assessed 21% below the median for this use in Norwalk ($413,970, 15,585 parcels).
- The last sale price is 18% 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 16 William 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