42 Oakhampton Road London NW7 1NH Data via plota.co.uk

25/4555/192 - Proposed Lawful Development Certificate Refused

Proposal

Erection of a rear outbuilding Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
14 Nov 2025
✗
Refused
9 Jan 2026
Appeal
Not lodged

Refused on 9 Jan 2026 · Delegated Decision · Last checked 17 Oct 2026

Site constraints 6

Article 4 direction
Article 4 Small Houses in Multiple Occupation (HMO) Area 1. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
In flood zones plus climate change
Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From rivers. Defences are not counted.
The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.
Flood map ↗
Air quality management area: Barnet AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Barnet built-up area; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square; Green belt 69 m away: London.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 1

Last sold for £585,000 in December 2019. Semi-detached house, freehold.

20 December 2019£585,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area83 m² (893 sq ft)
Energy ratingD (67 out of 100), could reach B
PropertySemi-detached house, 6 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in September 2019, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Barnet
Application type
Proposed Lawful Development Certificate
Postcode
NW7 1NH
Received
14 Nov 2025
Validated
14 Nov 2025
Ward
Mill Hill
Case officer
Show
Target decision
9 Jan 2026
Decision
Unlawful
Decision date
9 Jan 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Aaron D'Austin

How this decision compares

Decided in 56 days from validation, 28 days slower than Barnet's median of 28 for lawful development certificates. Refused, as 20% of lawful development certificates here are.

95%decided within 8 weeks
80%approved
788decided in the last year

Plota live figures for lawful development certificates decided by Barnet in the last twelve months, from validation. Barnet decision record →

Public comments

No public comments yet.

Last counted 17 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14487964
Planning Portal ref
PP-14487964
Statutory expiry
9 Jan 2026
Barnet
Planning Authority Score
6.2/10
Average
#90 of 296 councils
Relevant to this application:
Householder decisions

Barnet is faster than most councils at deciding householder applications, ranking #42 out of 296. Only 25% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Barnet is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Barnet decision statistics
Based on MHCLG data, the year to March 2026
75%
Overall approval rate
Below avg (87%) #285 of 296
82%
Householder approved
Below avg (90%) #264 of 296
79%
Decided in 8 weeks
Above avg (63%) #42 of 296
25%
Extended time limit
Below avg (41%) #29 of 296
55%
Minor dwellings approved
319 decided (1-9 homes)
90%
Major dwellings approved
21 decided (10+ homes)
41%
Change of use approved
132 decided
2,541
Total decisions
625 refused in the year to March 2026

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.