21 Mack St
Norwalk, CT 06854
Commercial
Building & Site Intelligence
Complete building characteristics, construction details, and site data from municipal assessor records and supplementary sources.
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Property Intelligence: 21 Mack St, Norwalk, CT 06854
Property Overview
21 Mack St is a Commercial, 0.25 acres in Western Connecticut Planning Region, CT. Ownership type: Corporation. Assessed value: $160,320.
Condition & Permits
No building permits on file.
Risk & Hazard Profile
NEP Fire Protection Grade: B. FEMA flood zone: AE. Hurricane storm surge exposure: Category 1. Sea level rise: at risk at 1-foot rise scenario. Risk assessment combines NEP proprietary ratings with federal, state, and municipal hazard data at parcel-level precision.
Ownership & Deed History
Last sale: August 1964. 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 Norwalk, CT and all six New England states. NE Provenance covers Western Connecticut Planning Region and over 4.7 million properties across 29 counties with up to 430 intelligence attributes per property record.
