Township brief
Berwyn Township, measured.
12,955 residential parcels on the official record. Median home built 1925. 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.
12,955Homes on the county recordAssessor
1925Median year builtAssessor
2,554Homes with a roof permit on file (19.7%)County permits
10,000–10,500Homes 25+ yrs old with no roof permit on fileDerived · estimate
The stock
What Berwyn's housing is made of.
98.1% of Berwyn's homes predate 1980. 86.8% carry asphalt-shingle roofs, 72.0% are masonry-walled (not a siding market), and 96.4% have a full or partial basement. 88.8% are owner-occupied.
Flood exposure: 0 homes sit in a FEMA Special Flood Hazard Area, while 378 (2.9%) carry a First Street flood factor of 5+ — water risk beyond the mapped floodplain.
The read for contractors
The 10,000–10,500 homes at 25+ years with no roof permit on file are where Berwyn's replacement cycle is furthest along — that cohort, minus fresh permits, is the campaign surface.
Stock profileAssessor · county permits
Re-roof waves
Berwyn's permit history has a shape.
Roof permits in Berwyn 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 |
|---|---|
| 2021 | 595 |
| 2022 | 585 |
| 2020 | 540 |
Want Berwyn scored neighborhood by neighborhood?
This page is the township-level read. The Territory X-Ray ranks every Berwyn neighborhood on the full model — roof age and size, storm cohort, permit suppression, ownership — with the first campaign chosen.
Request a Berwyn Territory X-Ray