Roofing in Litchfield County

Old, detached and owner-occupied: Litchfield County's houses

The Census picture of Litchfield County is of detached houses, lived in by their owners, many of them old. Summed across the county's 26 towns, American Community Survey estimates for 2019-2023 count 87,727 housing units. Single-family detached houses make up 75 percent of them, where Connecticut's share is 58.7, and owners occupy 76.7 percent of occupied homes, against 66.2 percent statewide. The county also carries more early housing: 24 percent of units were built before 1940, compared with 20.4 percent for the state. Many member towns are small, Canaan at 684 units and Warren at 730 among them, and estimates for places that size carry wide margins, so read any one town's figures as approximate.

Canaan and Norfolk share the oldest median year built, 1938, which makes the typical house in each about 88 years old in 2026; Norfolk also has the county's highest pre-1940 share, 52.4 percent. Torrington, the largest town with 17,047 units, has a 1961 median, about 65 years, and 27 percent prewar housing. Five towns have a median before 1960 and five have one of 1980 or later, the newest being Goshen at 1985, about 41 years, where 24.4 percent of units date from 2000 on. Sharon shows how mixed one town can be: 41.6 percent of its housing is prewar, yet 20.9 percent was built in 2000 or later.

On the older houses, the roofing material itself can decide the job. Under IRC R908.3.1.1, slate cannot be covered with a new roof, and neither can clay or cement tile. InterNACHI's life expectancy chart gives slate 60 to 150 years, against 30 for architectural asphalt, and notes that weather, design, material quality and maintenance all move those numbers. Where slate is still in place on a prewar house, a replacement means taking it off down to the deck, as R908.3 requires, since it cannot be covered. The Census does not report roofing materials, so how many Litchfield County roofs are slate is something only an inspection settles, house by house.

Repair work has a clear limit. Connecticut's amended R105.2 exempts from permits repairs limited to 25 percent of the roof covering within one calendar year; a larger repair or a full replacement needs a permit. The metal around a roof ages too. R908.5 requires existing flashings, edgings, outlets and vents that are rusted, damaged or deteriorated to be replaced, a list that can run long on a house near a century old. At the other end, even Goshen's typical house is past the 30 years InterNACHI gives architectural shingles, so in the county's newest towns, too, many houses are likely on a second covering or close to needing one. Every town appears in the tables below.

Source: U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates (tables B25001, B25003, B25024, B25034, B25035) for each town, summed by county. Connecticut's counties are no longer Census reporting areas, so no county-wide median year is given. Town estimates carry a margin of error, which is wider in smaller towns.