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

Conservatory at 92.7% based on 1,658 decisions.

What is hardest to get planning permission for in Eastleigh?

New Build at 73.7% based on 1,033 decisions.

How do approval rates vary by project type in Eastleigh?

From 92.7% (Conservatory) to 73.7% (New Build). What you build matters as much as where you build it.

Most Common Planning Applications in Eastleigh

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Eastleigh is 19.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

25,024 real decisions·17 project types·Updated June 2026

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All 17 project types ranked

#	Type	Decisions	Approved	Refused	Rate
1	Conservatory	1,658	1,537	121	92.7%
2	Rear Extension	5,628	4,934	694	87.7%
3	Extension (General)	841	723	118	86.0%
4	Outbuilding	756	648	108	85.7%
5	Side Extension	3,796	3,249	547	85.6%
6	Wraparound Extension	536	458	78	85.4%
7	Basement	49	41	8	83.7%
8	Front Extension	1,129	919	210	81.4%
9	Change of Use (Residential)	848	680	168	80.2%
10	Garage / Parking	4,483	3,590	893	80.1%
11	Loft Conversion	355	283	72	79.7%
12	HMO	51	40	11	78.4%
13	Flat Conversion	27	21	6	77.8%
14	Dormer	1,455	1,124	331	77.3%
15	Hip-to-Gable Conversion	86	64	22	74.4%
16	Annex	222	165	57	74.3%
17	New Build	1,033	761	272	73.7%

See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 92.7% approval rate. New Build? Just 73.7%.
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What the data tells us

The range is massive: 73.7% to 92.7%. 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

4,845 planning applications in Eastleigh 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 Eastleigh planning data

Methodology: Classifies 25,024 decisions in Eastleigh 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 Eastleigh Council's public planning portal, January 2020 to present. Full methodology →