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London Borough of Hillingdon

Planning appeal decisions, 2016–2026

Householder appeals

52.8% of Householder appeals allowed

In the 12 months to 28 August 2026

Allowed: 19Dismissed: 17
Allowed 19 Dismissed 17

19 allowed and 17 dismissed (36 decided). That is 17.3 percentage points above the national average of 35.5%. Across all years: 46.6% of 988 decided.

Small sample: with this few decisions the percentage can swing a lot from one year to the next.

Allowed ÷ (allowed + dismissed). Split decisions, withdrawn, invalid and undetermined appeals are left out. Based on completed records in the Appeal Scout archive, which runs a little behind today's date because decisions are added after publication.

Householder appeals allowed, year by year

Householder appeals allowed by year, London Borough of Hillingdon2016: 48.6% allowed (35 decided); 2017: 52.1% allowed (119 decided); 2018: 45.0% allowed (129 decided); 2019: 59.1% allowed (149 decided); 2020: 44.7% allowed (123 decided); 2021: 36.3% allowed (124 decided); 2022: 40.5% allowed (84 decided); 2023: 46.5% allowed (86 decided); 2024: 38.3% allowed (60 decided); 2025: 48.3% allowed (58 decided); 2026: 47.6% allowed (21 decided). Years with fewer than 10 decisions are not charted.0%25%50%75%100%2016: 48.6% allowed (35 decided)2016n=352017: 52.1% allowed (119 decided)2017n=1192018: 45.0% allowed (129 decided)2018n=1292019: 59.1% allowed (149 decided)2019n=1492020: 44.7% allowed (123 decided)2020n=1232021: 36.3% allowed (124 decided)2021n=1242022: 40.5% allowed (84 decided)2022n=842023: 46.5% allowed (86 decided)2023n=862024: 38.3% allowed (60 decided)2024n=602025: 48.3% allowed (58 decided)2025n=582026: 47.6% allowed (21 decided)2026n=21National Householder average by year49%49%52%52%45%45%59%59%45%45%36%36%40%40%46%46%38%38%48%48%48%48%
London Borough of Hillingdon National average

Dashed outlines mark years with fewer than 10 decided appeals, too few to chart. 2016 starts in April and 2026 runs to 28 August.

Latest Householder decisions

2026-08-11 Single storey rear extension and a part first floor rear extension Allowed 2026-07-07 Extension of the existing outbuildings gable end pitched roof to extend across and replace the area currently enclosed with a partial flat roof Allowed 2026-07-06 Erection of extension to existing outbuilding in the rear garden (Retrospective Planning Application) Allowed 2026-06-30 Proposed ground floor single storey rear extension, part double storey side extension and part first floor rear extension and hip to gable end loft c… Dismissed 2026-06-02 First floor side extension and proposed dropped kerb Dismissed 2026-05-28 Erection of outbuilding to rear garden for use as an annexe Dismissed 2026-05-21 Proposed dropped kerb, front driveway with permeable block paved material to create vehicular access Dismissed 2026-05-21 Single storey side and double storey rear extension as granted 61421/APP/2024/2854 and enlargement of loft space to form habitable accommodation Dismissed 2026-05-13 1st floor side and part rear extensions Dismissed 2026-05-11 Hip to gable loft conversion with a rear facing dormer Dismissed

See London Borough of Hillingdon's success rates by year, development type and appeal type

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These statistics describe past appeal decisions. They are not legal advice and do not predict the outcome of any appeal.
Contains public sector information licensed under the Open Government Licence v3.0.