What type of planning application is most likely to be approved in Warrington?

Basement at 90.6% based on 32 decisions.

What is hardest to get planning permission for in Warrington?

Hip-to-Gable Conversion at 80.2% based on 86 decisions.

How do approval rates vary by project type in Warrington?

From 90.6% (Basement) to 80.2% (Hip-to-Gable Conversion). What you build matters as much as where you build it.

Most Common Planning Applications in Warrington

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Warrington is 10.4% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

9,323 real decisions·17 project types·Updated September 2026

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All 17 project types ranked

#	Type	Decisions	Approved	Refused	Rate
1	Basement	32	29	3	90.6%
2	Wraparound Extension	478	432	46	90.4%
3	Rear Extension	3,302	2,972	330	90.0%
4	Flat Conversion	20	18	2	90.0%
5	Conservatory	478	428	50	89.5%
6	Extension (General)	1,238	1,102	136	89.0%
7	Loft Conversion	364	317	47	87.1%
8	Side Extension	2,101	1,823	278	86.8%
9	Front Extension	370	315	55	85.1%
10	Garage / Parking	1,621	1,366	255	84.3%
11	HMO	158	132	26	83.5%
12	Annex	66	55	11	83.3%
13	Dormer	651	541	110	83.1%
14	Outbuilding	328	270	58	82.3%
15	Change of Use (Residential)	619	504	115	81.4%
16	New Build	240	193	47	80.4%
17	Hip-to-Gable Conversion	86	69	17	80.2%

See how this applies to your postcode →

These are council averages. Your property is specific.

A basement application has a 90.6% approval rate. Hip-to-Gable Conversion? Just 80.2%.
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What the data tells us

The range is massive: 80.2% to 90.6%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.

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.

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

1,320 planning applications in Warrington 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 Warrington planning data

Methodology: Classifies 9,323 decisions in Warrington 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 Warrington Council's public planning portal, January 2020 to September 2026. Full methodology →