180 Cat Hill Barnet EN4 8HU Data via plota.co.uk

25/4134/PNH - Prior Notification (Householder) Approved
Extensions & alterations

Proposal

Single storey rear extension with a proposed depth of 4.45 metres, maximum height of 3.0 metres and eaves height of 2.8 metres. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
14 Oct 2025
✓
Consultation
14 Oct 2025
✓
Approved
21 Nov 2025
✓
Appeal allowed
5 Jun 2026

Approved on 21 Nov 2025 · Delegated Decision · Last checked 19 Oct 2026

Documents 6

Decision & officer reports 1

PDF DN: PNH HSE NOT REQ Decision Notice · 21 Nov 2025 View ↗

Statements & assessments 1

PDF FLOOD RISK ASSESSMENT Application Document · 14 Oct 2025 View ↗

Plans & drawings 3

PDF PROPOSED PLAN AND ELEVATION Revised Drawing · 20 Nov 2025 View ↗ PDF BLOCK PLAN OF THE SITE Block plan · 14 Oct 2025 View ↗ PDF EXISTING PLANS AND ELEVATIONS Drawing · 14 Oct 2025 View ↗

Application forms 1

PDF AMENDMENT : APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 21 Nov 2025 View ↗

All documents on the council site ↗

Site constraints 7

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 Named permitted development rights are withdrawn here.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.
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: Other Priority Habitats - NEZ
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Local nature reserve 312 m away: Oak Hill Wood
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Also on the record
Priority habitat 4 m away: Deciduous woodland; Inside the Barnet built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 11 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 2

Last sold for £530,000 in July 2014. Semi-detached house, freehold.

10 July 2014£530,000
19 August 1996£124,000

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

Building

Floor area117 m² (1,259 sq ft)
Energy ratingD (56 out of 100), could reach C
PropertySemi-detached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in February 2013, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

23 Jul 2026Approved

The Timbers Cat Hill Barnet EN4 8HU

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16 Jun 2026Refused

101 Cat Hill Barnet EN4 8HP

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48 Chestnut Grove Barnet EN4 8PU

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193 Cat Hill Barnet EN4 8HS

Two storey side extension involving conversion of garage into habitable room, hi...

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7 Oct 2026Pending

193 Cat Hill Barnet EN4 8HS

Single storey rear extension including internal alterations.

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Important details

Council
Barnet
Application type
Prior Notification (Householder)
Postcode
EN4 8HU
Received
14 Oct 2025
Validated
14 Oct 2025
Ward
East Barnet
Case officer
Show
Target decision
25 Nov 2025
Decision
Prior Approval Not Required
Decision date
21 Nov 2025
Decision level
Delegated Decision
Appeal
Allowed · 5 Jun 2026 · Written Representations · Inspectorate case 6005811 ↗
Applicant
Show
Agent
AS Architectural Services Ltd

How this decision compares

Decided in 38 days from validation, 14 days faster than Barnet's median of 52 for extensions. Approved, as 75% of extensions here are.

87%decided within 8 weeks
75%approved
1,888decided 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.

2 neighbours consulted · Last counted 19 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14408938
Planning Portal ref
PP-14408938
Neighbours
14 Oct 2025
Consultation
14 Oct 2025
Comments by
6 Nov 2025
Statutory expiry
25 Nov 2025

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Single storey side/rear extension (amended)
25/4135/HSE
2025
Single storey rear extension
25/03837/OA
2025 Refused
Single storey rear extension with a depth of 4.50 metres, maximum height of 3.40 metres a…
25/3390/PNH
2021 Approved
1 x Chestnut (applicant's ref. T1) - Lift to 3.8 meters. Thin by 25%. Standing in T1 of T…
TPP/0780/21
2017 Refused
1 x Horse Chestnut (Applicant's ref. T1) - Fell. T1 of Tree Preservation Order
TPF/0830/17
Within ~100m

Nearby activity

2025 Approved
74 Mansfield Avenue Barnet EN4 8QF
First floor rear extension with juliette balcony and addition of two new windows openings…
25/03606/OA
2025
74 Mansfield Avenue Barnet EN4 8QF
First floor rear extension. Repositioning of window at front elevation.
25/02681/OA
2025 Approved
Reedoaks 146A Cat Hill Barnet EN4 8HU
1 x Dead Poplar - Reduce the entire tree down to a height of 5.0m. Remove 2 low dead bran…
TPP/0446/25
2025 Refused
168 Cat Hill Barnet EN4 8HU
Single storey rear extension following demolition of the existing conservatory
25/3127/192
2025 Approved
76 Mansfield Avenue, Barnet, EN4 8QF
Single storey rear extension. Conversion of the existing garage into habitable room, inse…
25/01261/OA
2024 Decided
Reedoaks 146A Cat Hill Barnet EN4 8HU
1 x Large London Plane - Crown reduce height by 6m. Crown reduce secondary stem 2m below…
TPP/0488/24
2024 Refused
142 Cat Hill Barnet EN4 8HU
Single storey rear extension with a proposed depth of 5.10 metres, maximum height of 3.89…
24/3620/PNH
2024 Refused
142 Cat Hill Barnet EN4 8HU
Single Storey rear extension with a proposed depth of 5.00metres , maximum height of 3.80…
24/2714/PNH
2024 Refused
142 Cat Hill Barnet EN4 8HU
Single storey rear extension with 1no. roof lantern following demolition of existing cons…
24/1796/HSE
2023 Approved
Reedoaks 146A Cat Hill Barnet EN4 8HU
1 x Oak (applicants ref. T1) - Reduce the large limb growing towards the north and extend…
TPP/0393/23
2023 Decided
Reedoaks 146A Cat Hill Barnet EN4 8HU
1 x Oak (applicants ref. T1) - Reduce the large limb growing towards the north and extend…
TPP/0233/23
2022 Approved
160 Cat Hill Barnet EN4 8HU
Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no…
22/2702/192
2022 Approved
154 Cat Hill Barnet EN4 8HU
Single storey rear extension
22/0883/HSE
2022 Approved
154 Cat Hill Barnet EN4 8HU
Roof extension involving to gable, rear dormer window with juliette balcony, 3no front fa…
22/0218/192
2021 Approved
168 Cat Hill Barnet EN4 8HU
Roof extension involving raising roof height and rear dormer window and 3no front facing…
21/6069/HSE
2021 Refused
168 Cat Hill Barnet EN4 8HU
Roof extension involving raising roof height and rear dormer window and 3no front facing…
21/4541/HSE
2021 Approved
51 Freston Gardens Southgate Barnet EN4 9LY
Single storey front extension, incorporating front entrance porch together with, conversi…
21/5091/NAC
2020 Approved
172 Cat Hill Barnet EN4 8HU
Single storey side extension.
20/03568/OA
2020 Approved
172 Cat Hill Barnet EN4 8HU
Single storey side extension
20/4882/HSE
2020 Refused
79 Mansfield Avenue Barnet EN4 8QF
Single storey rear extension with a proposed depth of 4.50 metres from original rear wall…
20/3619/PNH
2018 Refused
152 Cat Hill Barnet EN4 8HU
Single storey rear extension with a proposed depth of 6 metres from original rear wall, e…
18/1660/PNH
2018 Approved
174 Cat Hill, Barnet, EN4 8HU
First floor side extension. Conversion of garage into habitable room and insertion of win…
18/01055/OA
2017 Approved
174 Cat Hill, Barnet, EN4 8HU,
First floor side extension. Change of use into habitable room insertion of window to repl…
17/05514/OA
2017 Approved
Reedoaks 146A Cat Hill Barnet EN4 8HU
7 x Oak (applicant's ref. T1, T2, T3, T4, T5, T7 and T8) - Crown clean as specified. Stan…
TPP/0496/17
2016 Approved
144 Cat Hill Barnet EN4 8HU
Single storey rear extension with new raised patio and access steps
16/5641/HSE
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
Source: MHCLG planning statistics · See full council rankings

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

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.