Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Most Common Planning Applications in Sunderland

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Sunderland is 45.8% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

11,042 real decisions·16 project types·Updated August 2026
97.7%
Safest: Wraparound Extension
51.9%
Lowest: HMO
45.8%
Spread
16
Types ranked

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All 16 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension88862
97.7%
2Conservatory1531494
97.4%
3Rear Extension1,0641,01648
95.5%
4Side Extension78874642
94.7%
5Extension (General)1,4411,36378
94.6%
6Garage / Parking1,1061,02086
92.2%
7Front Extension14513213
91.0%
8Basement33303
90.9%
9New Build73666472
90.2%
10Outbuilding17615719
89.2%
11Loft Conversion54477
87.0%
12Flat Conversion22193
86.4%
13Annex24204
83.3%
14Change of Use (Residential)728588140
80.8%
15Dormer26521253
80.0%
16HMO522725
51.9%
See how this applies to your postcode →

These are council averages. Your property is specific.

A wraparound extension application has a 97.7% approval rate. HMO? Just 51.9%.
Check your postcode to see what actually happens near your address.

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What the data tells us

1
The range is massive: 51.9% to 97.7%. 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

1,262 planning applications in Sunderland 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 Sunderland planning data

Nearby councils project type rankings

Methodology: Classifies 11,042 decisions in Sunderland 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 Sunderland Council's public planning portal, January 2020 to August 2026. Full methodology →
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