666 Washington St
Wellesley, MA 02482
Residential Other
Building & Site Intelligence
Complete building characteristics, construction details, and site data from municipal assessor records and supplementary sources.
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Property Intelligence: 666 Washington St, Wellesley, MA 02482
Property Overview
666 Washington St is a Institutional, Residential Other, built in 1910, 148,359 square feet, 3.40 acres in NORFOLK County, MA. Ownership type: Nonprofit. Assessed value: $19,845,000.
Condition & Permits
NEP Condition Estimate: C1. This property-specific condition rating is derived from municipal building permit records, not imagery or automated valuation models. 20 building permits on file from municipal records. Electrical system last permitted 0 years ago.
Risk & Hazard Profile
NEP Fire Protection Grade: A. FEMA flood zone: X. Risk assessment combines NEP proprietary ratings with federal, state, and municipal hazard data at parcel-level precision.
Ownership & Deed History
Full ownership chain, entity resolution, lien analysis, and comparable sales available with subscription.
About This Data
NE Provenance assembles property intelligence from municipal assessor records, building permit databases, county deed registries, federal environmental and hazard datasets, business registration filings, and state-level geospatial data — 140+ authoritative, primary sources corroborated at the individual address level.
Property data for Wellesley, MA and all six New England states. NE Provenance covers NORFOLK County and over 4.7 million properties across 29 counties with up to 430 intelligence attributes per property record.
