Township brief
Lemont Township, measured.
8,105 residential parcels on the official record. Median home built 1994. 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.
8,105Homes on the county recordAssessor
1994Median year builtAssessor
1,368Homes with a roof permit on file (16.9%)County permits
4,500–5,000Homes 25+ yrs old with no roof permit on fileDerived · estimate
The stock
What Lemont's housing is made of.
26.8% of Lemont's homes predate 1980. 96.2% carry asphalt-shingle roofs, 28.3% are masonry-walled (not a siding market), and 95.1% have a full or partial basement. 91.8% are owner-occupied.
Flood exposure: 21 homes sit in a FEMA Special Flood Hazard Area, while 526 (6.5%) carry a First Street flood factor of 5+ — water risk beyond the mapped floodplain.
The read for contractors
The 4,500–5,000 homes at 25+ years with no roof permit on file are where Lemont's replacement cycle is furthest along — that cohort, minus fresh permits, is the campaign surface.
Stock profileAssessor · county permits
Re-roof waves
Lemont's permit history has a shape.
Roof permits in Lemont 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 |
|---|---|
| 2022 | 361 |
| 2020 | 345 |
| 2024 | 341 |
Want Lemont scored neighborhood by neighborhood?
This page is the township-level read. The Territory X-Ray ranks every Lemont neighborhood on the full model — roof age and size, storm cohort, permit suppression, ownership — with the first campaign chosen.
Request a Lemont Territory X-Ray