70 Portland Ave, Old Lyme — property record card
Single Fam built in 1953, 3 bed, 1 bath, 972 ft² in Old Lyme, appraised at $468,200 (assessed $327,800); last sold for $550,000 on May 29, 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 Old Lyme assessor’s office.
Parcel
| Location | 70 Portland Ave, Old Lyme CT 06371 |
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| Parcel ID | 79-131 |
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| CAMA account | 57040-79-131 |
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| Use | Single Fam (state use code 1010) |
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| Zone | R-10 |
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| Planning region | Lower Connecticut River Valley |
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Valuation — revaluation 2024
| Appraised (market value) | $468,200
land $267,700 · building $185,700 · outbuildings $14,800 |
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| Assessed (70%) | $327,800
land $187,400 |
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Building
| Year built | 1953 (effective 1999) |
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| Living area | 972 ft² |
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| Rooms | 5 |
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| Bedrooms | 3 |
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| Bathrooms | 1 full |
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| Condition | A+ |
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Sales
| Last sale | $550,000 — May 29, 2025 |
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What this means
- Connecticut taxes property at 70% of its appraised market value: the assessment $327,800 times the town mill rate gives the yearly tax.
- Old Lyme last revalued in 2024. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.
- Assessed 19% below the median for this use in Old Lyme ($404,200, 4,150 parcels).
- The last sale price is 17% 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 70 Portland 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