42A Totteridge Common London N20 8ND Data via plota.co.uk

26/2554/HSE - Householder Application Approved

Proposal

Single storey rear conservatory extension. Extension to existing raised terrace. (amended description) Data via plota.co.uk

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View original council record ↗Last checked 4 Sept 2026, 13:11

Street View

Application progress

✓

Received

7 Jul 2026

✓

Validated

9 Jul 2026

✓

Consultation

30 Jul 2026

✓

Approved

3 Sept 2026

Approved on 3 Sept 2026 · Delegated Decision · Last checked 4 Sept 2026

Documents 15

Site constraints 9

Green belt: London

Inappropriate development needs very special circumstances.

Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.

Read the government guidance ↗

Totteridge conservation area

Demolition needs planning permission and permitted development is restricted.

The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.

Council document ↗

2 Article 4 directions

Article 4 Agricultural Land Restriction Area 1 · 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 Named permitted development rights are withdrawn here.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.

Agricultural land, grade 3a

Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. Natural England's Provisional ALC map (1:250,000, 1970s) agrees.

Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.

Archaeological priority area

An assessment or field evaluation may be asked for before ground works.

The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.

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 ↗

Habitat network: Network Enhancement Zone 1

Where habitat is joined up enough to work as a network. Context, not a constraint on its own.

Also on the record

Local nature reserve 392 m away: Totteridge Fields; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square.

Not affected

Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 6 October 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 £702,000 in March 2000. Detached house, freehold.

27 March 2000£702,000

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

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Other new applications on this street

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Nearby new applications

26 Oct 2026Pending

48 Totteridge Common London N20 8ND

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21 Oct 2026Pending

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Submission of details of condition 31 (Site investigation) pursuant to planning ...

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27 Aug 2026Approved

Willow House 38 Totteridge Common London N20 8NE

Submission of details of condition 7 (Stage 1 - written scheme of investigation)...

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Important details

Council: Barnet
Application type: Householder Application
Postcode: N20 8ND
Received: 7 Jul 2026
Validated: 9 Jul 2026
Ward: Totteridge & Woodside
Case officer: Show
Target decision: 3 Sept 2026
Decision: Approve subject to conditions
Decision date: 3 Sept 2026
Decision level: Delegated Decision
Applicant: Show
Agent: Stuart Henley & Partners

How this decision compares

Decided in 56 days from validation, 4 days slower than Barnet's median of 52 for extensions. Approved, as 75% of extensions here are.

This one56d

Council52d

UK55d

87%decided within 8 weeks

75%approved

1,904decided in the last year

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

Public comments

No public comments yet.

Last counted 4 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-14814270
Planning Portal ref: PP-14814270
Comments by: 20 Aug 2026
Site or press notice: 30 Jul 2026
Statutory expiry: 3 Sept 2026

Historical activity at this location

18 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved

Conservatory extension to rear

25/4164/192 15 Dec 2025

Within ~100m

Nearby activity

2025

The Coach House 46A Totteridge Common London N20 8ND

1 x Horse Chestnut (applicants ref. T1) - Fell to ground level.

TCP/0634/25 1 Oct 2025

2021 Approved

45 Totteridge Common London N20 8LU

Demolition of the existing buildings onsite and erection erection of a two storey dwellin…

21/3989/FUL 6 Oct 2021

2020 Refused

46 Totteridge Common London N20 8ND

1 x Oak (applicant's ref. T1) - Reduce the canopy up to 2m from branch tips, except for t…

TPP/0695/20 24 Nov 2020

2020 Approved

46 Totteridge Common London N20 8ND

Several dead Elm (applicant's ref. G1) - Fell

TCF/0772/20 9 Sep 2020

2020 Approved

46 Totteridge Common London N20 8ND

1 x dead Beech (applicant's ref. T3) - Fell. Standing in area A1 of Tree Preservation Ord…

TPF/0773/20 9 Sep 2020

2020 Approved

40 Totteridge Common London N20 8ND

1 x Sycamore (applicant's ref. T1) - Pollard back to previous points. T1 of Tree Preserva…

TPP/0035/20 10 Mar 2020

2020 Approved

46 Totteridge Common London N20 8ND

1 x Ash (applicant's ref. T1) - Fell. Standing in area A1 of Tree Preservation Order

TPF/0065/20 10 Mar 2020

2019 Approved

Cedar Ridge 44 Totteridge Common London N20 8ND

1 x Ash (dead) - Remove

TCF/0482/19 2 Jul 2019

2019 Approved

40 Totteridge Common London N20 8ND

Excavation and extension of existing lower ground level below garage building rearwards…

19/0497/HSE 29 Mar 2019

2019 Approved

Grassed Area In Front Of 40 - Cedar Ridge 44 Totteridge Common London N20 8ND

1 x Cedar (applicant's ref. T1) - Cut back the lateral branches to the south west over th…

TPP/0086/19 19 Mar 2019

2018 Approved

46 Totteridge Common London N20 8ND

Application to discharge condition 2 of TPM/0254/18 (notification of commencement of appr…

TCO/0496/18 11 Sep 2018

2018 Approved

46 Totteridge Common London N20 8ND

1 x Oak (applicant's ref. T3) - Fell. Standing in area A1 of Tree Preservation Order1 x A…

TPM/0254/18 30 May 2018

2018 Approved

46 Totteridge Common London N20 8ND

Approx. 20 x Leylandii (applicant's ref. G1) - Reduce to same height as rest of Leylandii…

TCM/0267/18 16 May 2018

2017 Approved

48 Totteridge Common London N20 8ND

3 x Oak - remove deadwood. Standing in group G4 of Tree Preservation Order

TPP/0931/17 19 Dec 2017

2017 Approved

46 Totteridge Common London N20 8ND

1 x Ash (applicant's ref. T18) - Crown reduction 2 metres overextended limbs, Lateral red…

TPM/0102/17 5 Apr 2017

2017 Approved

46 Totteridge Common London N20 8ND

3 x Lime (applicant's ref. T1, T2, T3) - Crown lift to 3m and a maximum of 20% crown redu…

TCM/0140/17 5 Apr 2017

2017 Approved

44 / 46 Totteridge Common London N20 8ND

Group of Lawsons Cypress (applicant's ref. G2) - Lateral reduction of branches overhangin…

TCM/0141/17 5 Apr 2017

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

42A Totteridge Common London N20 8ND Data via plota.co.uk

Proposal

Application progress

Documents 15

Decision & officer reports 2

Statements & assessments 1

Plans & drawings 6

Application forms 2

Other documents 4

Site constraints 9

Sales history 1

Other new applications on this street

Nearby new applications

Important details

How this decision compares

Public comments

Consultation & key dates

Previous applications at this address

Nearby activity