Implement Attached Neighbour & Party Wall Detection

[jravani]

Overview

City2TABULA currently processes each building independently and does not detect:

1. Attached neighbouring buildings, or
2. Party walls (shared structural walls between neighbours).

These features are required for:

• Heating demand adjustments (shared-wall heat loss reduction)
• Building classification
• Urban morphology analysis
• General spatial analysis of building blocks

This parent issue groups the entire feature set.
Implementation will be divided into two sub-issues:

• Implement Attached Neighbour Detection #13
• Implement Party Wall Detection (Shared Walls) #14

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Scope

This parent issue includes:

• Designing the overall method
• Ensuring consistent implementation across datasets (DE/NL/AT/CZ)
• Defining required output attributes
• Ensuring integration into the City2TABULA schema
• Performance and validation considerations

The detailed implementations are tracked in the sub-issues.

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Deliverables

• Neighbour detection API/query available for pipeline
• Party wall detection integrated into {schema}.{lod}_child_feature_surface
• Documentation for both features
• Validation strategy for noisy LoD2/LoD3 datasets

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Sub-Issues

• Implement Attached Neighbour Detection #13
• Implement Party Wall Detection (Shared Walls) #14