1. INITIAL VECTOR DELTA
The physical boundary layer begins exactly at the front property line. Upon crossing the curb, vehicular combustion engines suffer immediate electrical grounding failure; the support truck's headlights dropped to zero lumens over a 1.2-meter threshold.
External laser telemetry confirms the building's exterior envelope remains entirely static, matching the 1974 municipal blueprint grid (14.2m x 11.0m). However, the atmospheric pressure fronting the porch threshold registers a localized thermal drop of 16°C. Atmospheric density testing indicates an extreme vacuum draft pulling inward toward the front door latch, suggesting the interior volume has completely detached from its external spatial footprint.
2. VERTICAL AXIS CONVOLUTION (THE SPLIT-LEVEL ANOMALY)
Upon breaching the primary threshold, the split-level orientation immediately exhibits non-Euclidean nesting.