40 Keystone St
Boston, MA 02132
residentialSingle Family
Building & Site Intelligence
Complete building characteristics, construction details, and site data from municipal assessor records and supplementary sources.
Available intelligence on this tab
Data coverage varies by municipality — check availability
Unlock the full intelligence for 40 Keystone St
Full access to 40 Keystone St and 4.7M+ others
Free for 14 days, no commitments, cancel anytime
See what a full property record looks like
Property Intelligence: 40 Keystone St, Boston, MA 02132
Property Overview
40 Keystone St is a Single Family, built in 1929, 944 square feet, 0.07 acres in SUFFOLK County, MA. 2 bedrooms, 1 bathrooms. Ownership type: Individual. Assessed value: $477,400.
Condition & Permits
NEP Condition Estimate: C5. This property-specific condition rating is derived from municipal building permit records, not imagery or automated valuation models. 1 building permits on file from municipal records.
Risk & Hazard Profile
NEP Fire Protection Grade: B. 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 Boston, MA and all six New England states. NE Provenance covers SUFFOLK County and over 4.7 million properties across 29 counties with up to 430 intelligence attributes per property record.
