What is the biggest house in Park Ridge?

317 Elm St leads Park Ridge in building square footage: 9,326 sq ft of building.

1. 1317 Elm St09-26-419-017-0000 · 9,326 sq ft of building
2. 2500 N Prospect Ave09-26-406-026-0000 · 8,525 sq ft of building
3. 3500 N Prospect Ave09-26-406-027-0000 · 8,525 sq ft of building
4. 4627 Edgemont Ln09-26-204-048-0000 · 8,418 sq ft of building
5. 5740 N Prospect Ave09-26-204-068-0000 · 8,041 sq ft of building

Computed from the Park Ridge release: ranked houses (residential-class parcels with a recorded building) by building square footage (highest first). The release contains 15,636 parcels; each query uses the relevant record tables and stated filters. Records refreshed 2026-11-02 · assessor records 2026-11-01 · Board decisions through 2026-06-09. This is a deterministic query over recorded and explicitly labeled derived fields.