Conservatory approval rate in Hillingdon

Hillingdon approved 82.5% of conservatory applications, based on 878 decisions analysed.

Last updated: August 2026

82.5%

conservatory approval rate

878

Conservatory decisions

724

Approved

154

Refused

80.0%

Hillingdon overall

Conservatory applications are approved more often than the Hillingdon average (80.0%), suggesting the council is relatively receptive to these projects.

How conservatory compares in Hillingdon

Conservatory (878 decided)

82.5%

Hillingdon all applications (30,835 decided)

80.0%

Planning a conservatory in Hillingdon?

82.5% 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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