# Park House, Park Road, Colton, Leeds (replacement windows, listed building)

- **Decision:** dismissed, 11 September 2026
- **Decided by:** Planning Inspector: Paul Martinson
- **Authority:** Leeds (Yorkshire and the Humber)
- **Appeal reference:** 6007479
- **Application reference:** 25/06103/FU
- **Procedure:** written-representations
- **Development:** Replacement of Yorkshire sliding sash and vertical sash windows with double-glazed timber units at a Grade II house in Colton CA (planning Appeal B; linked LBC Appeal A 6007478)
- **Site context:** conservation-area, listed-building-setting
- **Green Belt:** no
- **Framework applied:** August 2026 NPPF
- **Determinative policies:** HE6(4)
- **Development plan policies:** Leeds Core Strategy 2014 P10, P11, Leeds UDP Review 2006 N14, N17, N20
- **Main issues:** listed building, conservation area
- **Tags:** tier-2, windows, heritage-harm-decisive, old-wording-slip, energy-efficiency

## Summary
Double-glazed replacements for authentic-looking Yorkshire sliding sashes at a Grade II house were refused. The inspector refers to the new Framework's HE6 but uses the 2024 'great weight' and 'less than substantial' language (DL 23-24).

## What made the difference
The loss of the local Yorkshire sash style with thick modern frames. Less harmful energy-efficiency options had not been explored (DL 19, 26).

## Policy findings
- **HE6(1): harm (great weight).** 'moderate to high level of less than substantial harm'; framed with 'great weight' although it cites the new Framework (DL 23)
- **HE6(4): fail.** thermal and security benefits limited; secondary or slimmer glazing not ruled out (DL 24-28)

## Key facts
- Existing windows not historic but authentic in proportion and style (DL 12)
- No existing-window drawings or position details were supplied (DL 16)

## Sources
- https://appeal-planning-decision.service.gov.uk/comment-planning-appeal/appeals/6007479
- https://appeal-planning-decision.service.gov.uk/published-document/fa5782e3-4ace-45c6-bb28-378d04735ee9

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