Neighborhood build-era clusters (examples)
- Walnut Hills / Dry Creek corridor: lots of 1960s–1970s ranch & split-level remodels (ceilings, floors, ducts).
- Cherry Knolls / Southglenn area: 1960s–1970s interiors often still have original finishes under newer layers.
- East Centennial near E-470: newer builds trend lower-risk, but imported/legacy products still show up occasionally.