Data / Connecticut CT · updated 2026-07-30
Connecticut property data 22,784 properties mapped across 214 Connecticut counties, 12,908 of them carrying linked permit, violation, sale, or event records. These are the live map's own counts, not estimates. Statewide permit totals by jurisdiction are on the coverage page.
12,908
With linked records (57%)
Counties County Properties With records Linked share Tier Avon 7,813 0 0.0% Parcel-only Town of Greenwich 3,112 3,112 100% Deep Andover 1,631 576 35% Active Hartford CT 1,386 1,386 100% Deep Town of Portland 1,221 1,221 100% Deep Barkhamsted 1,009 1 0.1% Parcel-first City of New Haven 714 714 100% Deep Town of Bethel 544 544 100% Deep Town of Glastonbury 478 478 100% Deep Town of Bethany 408 408 100% Deep Town of Southbury 406 406 100% Deep Town of Derby 211 211 100% Deep Town of Thomaston 183 183 100% Deep Town of Old Saybrook 183 183 100% Deep Town of Plainville CT 151 151 100% Deep City of Milford 141 141 100% Deep Town of Stonington 138 138 100% Deep City of Torrington 127 127 100% Deep Town of Deep River 126 126 100% Deep Town of Bethlehem CT 123 123 100% Deep Town of Vernon 123 123 100% Deep Town of Bristol 120 120 100% Deep City of Norwalk 118 118 100% Deep Town of Bethlehem 109 109 100% Deep Town of Willington 108 108 100% Deep Town of New Canaan 106 106 100% Deep Town of Fairfield 101 101 100% Deep Town of Clinton 98 98 100% Deep Town of Salisbury 78 78 100% Deep Town of Eastford 59 59 100% Deep Town of Simsbury 52 52 100% Deep Town of Washington 47 47 100% Deep Town of Southington 45 45 100% Deep Town of Killingworth 39 39 100% Deep Town of Watertown 33 33 100% Deep Town of Trumbull 32 32 100% Deep City of Danbury 32 32 100% Deep Town of Kent CT 30 30 100% Deep Town of Berlin 30 30 100% Deep Town of Westbrook 30 30 100% Deep Town of Cheshire 30 30 100% Deep Old Lyme CT 27 27 100% Deep Town of Ellington 27 27 100% Deep Town of Madison CT 26 26 100% Deep Town of Guilford 26 26 100% Deep Town of North Canaan 23 23 100% Deep Town of Scotland 22 22 100% Deep Town of New Milford 21 21 100% Deep East Hampton CT 21 21 100% Deep City of Stamford 21 21 100% Deep Borough of Naugatuck 21 21 100% Deep Stonington CT 19 19 100% Deep East Haddam CT 18 18 100% Deep Town of Ridgefield CT 18 18 100% Deep Town of Darien 18 18 100% Deep City of Norwich 18 18 100% Deep Killingly CT 16 16 100% Deep Town of Tolland 16 16 100% Deep Town of East Hampton 16 16 100% Deep Town of Newtown CT 16 16 100% Deep Town of Orange CT 16 16 100% Deep Colchester CT 16 16 100% Deep Town of Madison 15 15 100% Deep Town of Kent 15 15 100% Deep Town of Wilton 14 14 100% Deep Portland CT 14 14 100% Deep Town of Granby 14 14 100% Deep Town of Fairfield CT 13 13 100% Deep Town of Branford 13 13 100% Deep Town of North Branford 13 13 100% Deep Haddam CT 13 13 100% Deep Danbury CT 12 12 100% Deep Town of Westport 12 12 100% Deep North Stonington CT 12 12 100% Deep Ledyard CT 12 12 100% Deep Town of North Haven 12 12 100% Deep Town of Hebron CT 12 12 100% Deep New Fairfield CT 12 12 100% Deep Plainfield CT 12 12 100% Deep Town of Marlborough 11 11 100% Deep Sherman CT 11 11 100% Deep Town of Washington CT 11 11 100% Deep Town of Old Lyme 11 11 100% Deep Town of Hamden 11 11 100% Deep Montville CT 11 11 100% Deep Town of Lebanon 11 11 100% Deep Town of Woodbridge 10 10 100% Deep Griswold CT 10 10 100% Deep Town of Avon 10 10 100% Deep Town of Weston 10 10 100% Deep Town of Columbia 9 9 100% Deep Town of Essex CT 9 9 100% Deep Lyme CT 9 9 100% Deep Town of Sharon CT 9 9 100% Deep Monroe CT 9 9 100% Deep Southbury CT 9 9 100% Deep Canterbury CT 9 9 100% Deep Mystic CT 9 9 100% Deep Town of Orange 8 8 100% Deep Brookfield CT 8 8 100% Deep Town of Roxbury 8 8 100% Deep Lebanon CT 8 8 100% Deep Town of Oxford 8 8 100% Deep Town of Seymour 8 8 100% Deep Town of West Hartford 8 8 100% Deep Bozrah CT 7 7 100% Deep Waterbury CT 7 7 100% Deep Suffield CT 7 7 100% Deep Southington CT 7 7 100% Deep Brooklyn CT 7 7 100% Deep Clinton CT 7 7 100% Deep Oxford CT 7 7 100% Deep Town of Coventry CT 7 7 100% Deep Salem CT 7 7 100% Deep Marlborough CT 7 7 100% Deep Somers CT 6 6 100% Deep East Hartford CT 6 6 100% Deep Morris CT 6 6 100% Deep Town of Griswold 6 6 100% Deep Stafford Springs CT 6 6 100% Deep Milford CT 6 6 100% Deep Willington CT 6 6 100% Deep Columbia CT 6 6 100% Deep Town of Durham CT 6 6 100% Deep City of Middletown CT 6 6 100% Deep East Lyme CT 6 6 100% Deep Town of Litchfield 6 6 100% Deep Middlebury CT 5 5 100% Deep Woodbury CT 5 5 100% Deep Berlin CT 5 5 100% Deep Town of Andover 5 5 100% Deep Wallingford CT 5 5 100% Deep Town of Farmington 5 5 100% Deep Goshen CT 5 5 100% Deep Town of Mansfield 5 5 100% Deep Pomfret CT 5 5 100% Deep Wolcott CT 5 5 100% Deep Burlington CT 5 5 100% Deep Norwich CT 5 5 100% Deep Bethel CT 5 5 100% Deep Middlefield CT 5 5 100% Deep Deep River CT 5 5 100% Deep Town of Salisbury CT 4 4 100% Deep New Haven CT 4 4 100% Deep Windham CT 4 4 100% Deep Town of Montville 4 4 100% Deep Chester CT 4 4 100% Deep Windsor CT 4 4 100% Deep Groton CT 4 4 100% Deep City of Bridgeport 4 4 100% Deep Chaplin CT 4 4 100% Deep Town of Redding CT 4 4 100% Deep Enfield CT 4 4 100% Deep Ashford CT 4 4 100% Deep Putnam CT 3 3 100% Deep Windsor Locks CT 3 3 100% Deep Winsted CT 3 3 100% Deep Town of Bloomfield 3 3 100% Deep Town of Easton 3 3 100% Deep East Haven CT 3 3 100% Deep Bridgewater CT 3 3 100% Deep Stratford CT 3 3 100% Deep Thompson CT 3 3 100% Deep Warren CT 3 3 100% Deep Preston CT 3 3 100% Deep Town of Winchester 3 3 100% Deep Prospect CT 3 3 100% Deep Sterling CT 2 2 100% Deep Wethersfield CT 2 2 100% Deep Sprague CT 2 2 100% Deep West Haven CT 2 2 100% Deep New London CT 2 2 100% Deep Town of Coventry 2 2 100% Deep Woodstock CT 2 2 100% Deep Franklin CT 2 2 100% Deep Derby CT 2 2 100% Deep Sandy Hook CT 2 2 100% Deep Watertown CT 2 2 100% Deep Manchester CT 2 2 100% Deep Bolton CT 2 2 100% Deep Canton CT 2 2 100% Deep Stafford CT 2 2 100% Deep Waterford CT 2 2 100% Deep Town of Bolton 2 2 100% Deep Hampton CT 2 2 100% Deep Beacon Falls CT 2 2 100% Deep Lisbon CT 2 2 100% Deep Norfolk CT 2 2 100% Deep Town of Harwinton 1 1 100% Deep Shelton CT 1 1 100% Deep Broad Brook CT 1 1 100% Deep Plymouth CT 1 1 100% Deep New Britain CT 1 1 100% Deep Hebron CT 1 1 100% Deep Seymour CT 1 1 100% Deep Barkhampstead CT 1 1 100% Deep 2273 Post Rd CT 1 1 100% Deep Bridgeport CT 1 1 100% Deep Canaan CT 1 1 100% Deep 11 Prospect Dr CT 1 1 100% Deep Andover CT 1 1 100% Deep Naugatuck CT 1 1 100% Deep Town of Voluntown 1 1 100% Deep Voluntown CT 1 1 100% Deep Town of Cornwall CT 1 1 100% Deep Town of East Windsor 1 1 100% Deep New Hartford CT 1 1 100% Deep Gosehn, Ct CT 1 1 100% Deep Thomaston CT 1 1 100% Deep Rockfall CT 1 1 100% Deep Propect CT 1 1 100% Deep East Granby CT 1 1 100% Deep W. Cornwall CT 1 1 100% Deep South Windsor CT 1 1 100% Deep
Permit approval speed Median calendar days from filing to issuance, computed from real filed/issued date pairs over the last 3 years and published only where the sample is large and clean enough to trust (full methodology on the methodology page ). Jurisdictions with too little data, or a same-day-issuance artifact in the feed, are left out rather than shown with a misleading number.
Hartford CT
Electrical median 17d (p25 7–p75 38) · n=2,267
Plumbing median 17d (p25 9–p75 31.5) · n=1,543
Mechanical median 23d (p25 10–p75 50) · n=1,001
All permit types combined median 18d (p25 9–p75 40) · n=8,609
Town of New Canaan
All permit types combined median 0d (p25 0–p75 1) · n=3,205
Killingly CT
All permit types combined median 4d (p25 1–p75 10) · n=3,163
Town of Westbrook
All permit types combined median 0d (p25 0–p75 6) · n=1,853
Town of Weston
All permit types combined median 8d (p25 3–p75 13) · n=663
What is in the Connecticut data Every property above sits on the owned parcel layer (92M parcels nationally) and is joined to whichever record classes exist for its jurisdiction: building permits, code violations, complaints, deeds and sales, assessments, and certificates of occupancy. Per-county parcel-match rates are published openly on the data quality page .
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