Data-backed planning intelligence · 3,840,000+ decisions analysed across England, Scotland, Wales and Northern Ireland
PlanningLens

Most Common Planning Applications in East Hertfordshire

Not all planning applications are created equal. The gap between the highest and lowest approval project type in East Hertfordshire is 20.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

14,346 real decisions·17 project types·Updated September 2026
82.7%
Safest: Conservatory
62.5%
Lowest: New Build
20.2%
Spread
17
Types ranked

Check Planning Approval Patterns in East Hertfordshire

See your ward's approval rate and nearby planning decisions — free and instant.

Check My Postcode

All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory1,084897187
82.7%
2Rear Extension5,4544,2991,155
78.8%
3Wraparound Extension539421118
78.1%
4Loft Conversion988746242
75.5%
5Extension (General)698526172
75.4%
6Front Extension1,083813270
75.1%
7Outbuilding1,4621,088374
74.4%
8Side Extension3,0582,269789
74.2%
9Dormer1,6971,258439
74.1%
10Basement23917564
73.2%
11Garage / Parking4,3573,1091,248
71.4%
12Hip-to-Gable Conversion22415965
71.0%
13HMO20146
70.0%
14Annex355228127
64.2%
15Flat Conversion412615
63.4%
16Change of Use (Residential)1,062669393
63.0%
17New Build1,305816489
62.5%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 82.7% approval rate. New Build? Just 62.5%.
Check your postcode to see what actually happens near your address.

Check My Postcode

What the data tells us

1
The range is massive: 62.5% to 82.7%. 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

3,641 planning applications in East Hertfordshire 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.

Check my postcode
Free · Property report emailed in minutes · Based on 3,840,000+ real decisions

More East Hertfordshire planning data

Nearby councils project type rankings

Methodology: Classifies 14,346 decisions in East Hertfordshire 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 East Hertfordshire Council's public planning portal, January 2020 to September 2026. Full methodology →
Check planning approval patterns in East Hertfordshire — Free