Conservatory approval rate in Hillingdon

Hillingdon approved 81.9% of conservatory applications, based on 852 decisions analysed.

Last updated: June 2026

81.9%

conservatory approval rate

852

Conservatory decisions

698

Approved

154

Refused

79.0%

Hillingdon overall

Conservatory applications are approved more often than the Hillingdon average (79.0%), suggesting the council is relatively receptive to these projects.

How conservatory compares in Hillingdon

Conservatory (852 decided)

81.9%

Hillingdon all applications (30,584 decided)

79.0%

Planning a conservatory in Hillingdon?

81.9% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

✓ Your ward's conservatory approval rate
✓ Nearest comparable conservatory decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

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