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Cert 9501 (Summary_000784.pdf) is a flat. The Elmhurst Summary's
§1.0 "Property type" section lodges the built-form descriptor
("M Mid-Terrace", "D Detached", ...) only for houses — flats have no
attachment line, and the §2.0 "Number of Storeys" header follows
immediately after the "F Flat" property-type value.
The extractor's prior `_extract_attachment` regex captured the line
right after the property-type value unconditionally, so cert 9501
ended up with `attachment="2.0 Number of Storeys:"` — section-header
noise that the mapper surfaced on `EpcPropertyData.built_form`.
Downstream, this broke the cascade's `_dwelling_exposure` routing
(no prefix match → defaulted to fully-exposed houses) and so the
cert 9501 Summary path was Δ -5.25 SAP vs worksheet 68.5252.
Detect section-header noise via the leading `<digit>.<digit> `
pattern and the "Number of Storeys" substring; return "" in that
case so flats produce empty `built_form`. Houses still pick up their
real attachment (cohort 0330's "M Mid-Terrace" remains correct).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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| .. | ||
| fixtures | ||
| __init__.py | ||
| test_elmhurst_end_to_end.py | ||
| test_elmhurst_extractor.py | ||
| test_end_to_end.py | ||
| test_extractor.py | ||
| test_pdf.py | ||
| test_summary_pdf_mapper_chain.py | ||