An Astoria house is inspected from the roof down
On a flat-roofed row house the roof is a floor you never walk and a system you cannot see from the street. Membrane, parapets, skylights and drainage all age in private, and the top-floor ceilings report the results afterwards. Lou gets up there where access allows — and where it does not, New York's rules require the report to say what was not observed and why.
The lot matters too. With most of an Astoria yard paved, every leader and drain has one job — move water away from the foundation — and decades of re-piped, re-routed drainage is where basements get their histories. A two- or three-family adds its own layer: separate systems, separate meters, and alterations made unit by unit.
Related: Buying a Queens co-op instead? · What an inspection costs · Schedule an inspection.