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Most Common Planning Applications in Haringey

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Haringey is 35.8% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

24,508 real decisions·17 project types·Updated September 2026
94.3%
Safest: Conservatory
58.5%
Lowest: HMO
35.8%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory28326716
94.3%
2Wraparound Extension36132734
90.6%
3Outbuilding94985198
89.7%
4Dormer3,6263,249377
89.6%
5Flat Conversion1,9691,750219
88.9%
6Hip-to-Gable Conversion36532441
88.8%
7Side Extension1,4031,243160
88.6%
8Rear Extension4,4703,958512
88.5%
9Garage / Parking1,6171,414203
87.4%
10Loft Conversion2,3722,054318
86.6%
11Basement1,043895148
85.8%
12New Build1,034877157
84.8%
13Annex43367
83.7%
14Extension (General)2,4842,064420
83.1%
15Front Extension927616
82.6%
16Change of Use (Residential)1,4811,160321
78.3%
17HMO552323229
58.5%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 94.3% approval rate. HMO? Just 58.5%.
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What the data tells us

1
The range is massive: 58.5% to 94.3%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.
2
Visibility drives scrutiny. Project types that change the external appearance — dormers, loft conversions, hip-to-gable — face more resistance than those that don't. The more visible your proposal, the more carefully it needs designing.
3
These are council-wide averages. Your ward, your street and your immediate neighbours all shift the odds. The comparable decisions near your property are the best indicator of outcome.

Before you spend £5,000+ on architects and drawings

2,762 planning applications in Haringey have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More Haringey planning data

Nearby councils project type rankings

Methodology: Classifies 24,508 decisions in Haringey into residential project types using keyword matching against proposal descriptions (matching generate_site_data.py subtype rules). A single application may appear in multiple categories. Data from Haringey Council's public planning portal, January 2020 to September 2026. Full methodology →
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