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Current page: ROT/EXT-AIP-ZERO-STEP-ENTRY
Rule of thumbRecommended

Zero-step entry: at least one entry with NO step from grade to threshold (≤ ½ in lip)

ROT/EXT-AIP-ZERO-STEP-ENTRY

Description

Aging-in-place + universal-design principle: at least ONE entry to the home should be no-step — grade slopes gently to the threshold (≤ 2% slope), threshold ≤ ½ in tall. Often the rear or garage entry rather than the formal front — but any entry counts. This eliminates the wheelchair / walker / stroller barrier without compromising the home's curb appeal.

Why this exists

Stepless entry is the single highest-value aging-in-place design move. It's free if planned in the foundation grade beam; expensive (and ugly) if retrofitted via ramp. Architects designing aging-in-place ready homes should locate the no-step entry on the site plan during schematic.

Categories

AccessibilityCirculationSite

Source

Professional consensusno manifest entry
Architectural Graphic Standards (Ramsey/Sleeper) ()
Section: Residential design conventions
Published 2024-01-01 · last verified 2026-05-15

Solver enforcement

Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.

Related directives

Last reviewed 2026-05-15.