Township brief
Thornton Township, measured.
53,053 residential parcels on the official record. Median home built 1957. Every figure below is computed from the county assessor's file, county roof permits, FEMA + First Street flood layers — aggregate only, and never a claim about any specific property.
53,053Homes on the county recordAssessor
1957Median year builtAssessor
2,507Homes with a roof permit on file (4.7%)County permits
49,500–50,000Homes 25+ yrs old with no roof permit on fileDerived · estimate
The stock
What Thornton's housing is made of.
93.4% of Thornton's homes predate 1980. 97.7% carry asphalt-shingle roofs, 38.8% are masonry-walled (not a siding market), and 80.9% have a full or partial basement. 78.9% are owner-occupied.
Flood exposure: 1,980 homes sit in a FEMA Special Flood Hazard Area, while 6,275 (11.8%) carry a First Street flood factor of 5+ — water risk beyond the mapped floodplain.
The read for contractors
The 49,500–50,000 homes at 25+ years with no roof permit on file are where Thornton's replacement cycle is furthest along — that cohort, minus fresh permits, is the campaign surface.
Stock profileAssessor · county permits
Re-roof waves
Thornton's permit history has a shape.
Roof permits in Thornton cluster into waves — the county file shows the biggest recent years to the right. Homes that didn't replace during a wave are aging on the same clock as the neighbors that did.
The read for contractors
Campaign the non-replacers inside a past wave's footprint — demand that already proved itself once tends to prove itself again.
Biggest recent permit yearsCounty roof permits
| Year | Roof permits |
|---|---|
| 2020 | 1,235 |
| 2021 | 1,048 |
| 2019 | 444 |
Want Thornton scored neighborhood by neighborhood?
This page is the township-level read. The Territory X-Ray ranks every Thornton neighborhood on the full model — roof age and size, storm cohort, permit suppression, ownership — with the first campaign chosen.
Request a Thornton Territory X-Ray