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

Conservatory at 93.1% based on 346 decisions.

What is hardest to get planning permission for in Dartford?

HMO at 69.9% based on 73 decisions.

How do approval rates vary by project type in Dartford?

From 93.1% (Conservatory) to 69.9% (HMO). What you build matters as much as where you build it.

Most Common Planning Applications in Dartford

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Dartford is 23.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

7,697 real decisions·17 project types·Updated June 2026

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All 17 project types ranked

#	Type	Decisions	Approved	Refused	Rate
1	Conservatory	346	322	24	93.1%
2	Hip-to-Gable Conversion	127	117	10	92.1%
3	Outbuilding	506	456	50	90.1%
4	Extension (General)	248	223	25	89.9%
5	Side Extension	1,012	902	110	89.1%
6	Wraparound Extension	99	88	11	88.9%
7	Rear Extension	2,076	1,834	242	88.3%
8	Garage / Parking	1,897	1,661	236	87.6%
9	Dormer	877	765	112	87.2%
10	New Build	724	624	100	86.2%
11	Front Extension	244	209	35	85.7%
12	Annex	104	89	15	85.6%
13	Basement	95	81	14	85.3%
14	Loft Conversion	249	211	38	84.7%
15	Change of Use (Residential)	450	337	113	74.9%
16	Flat Conversion	30	21	9	70.0%
17	HMO	73	51	22	69.9%

See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 93.1% approval rate. HMO? Just 69.9%.
Check your postcode to see what actually happens near your address.

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What the data tells us

The range is massive: 69.9% to 93.1%. 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

941 planning applications in Dartford 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 Dartford planning data

Nearby councils project type rankings

Methodology: Classifies 7,697 decisions in Dartford 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 Dartford Council's public planning portal, January 2020 to present. Full methodology →