Township brief
Proviso Township, measured.
42,151 residential parcels on the official record. Median home built 1952. 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.
42,151Homes on the county recordAssessor
1952Median year builtAssessor
105Homes with a roof permit on file (0.2%)County permits
41,500–42,000Homes 25+ yrs old with no roof permit on fileDerived · estimate
The stock
What Proviso's housing is made of.
95.3% of Proviso's homes predate 1980. 95.9% carry asphalt-shingle roofs, 51.1% are masonry-walled (not a siding market), and 89.3% have a full or partial basement. 88.5% are owner-occupied.
Flood exposure: 2,398 homes sit in a FEMA Special Flood Hazard Area, while 3,673 (8.7%) carry a First Street flood factor of 5+ — water risk beyond the mapped floodplain.
The read for contractors
The 41,500–42,000 homes at 25+ years with no roof permit on file are where Proviso's replacement cycle is furthest along — that cohort, minus fresh permits, is the campaign surface.
Stock profileAssessor · county permits
Re-roof waves
Proviso's permit history has a shape.
Roof permits in Proviso 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 |
|---|---|
| 2023 | 50 |
| 2022 | 25 |
| 2024 | 21 |
Want Proviso scored neighborhood by neighborhood?
This page is the township-level read. The Territory X-Ray ranks every Proviso neighborhood on the full model — roof age and size, storm cohort, permit suppression, ownership — with the first campaign chosen.
Request a Proviso Territory X-Ray