Land adjacent The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL Data via plota.co.uk

6/2026/1083/LAWP - LAWFUL DEVELOPMENT - PROPOSED Approved
New homes

Proposal

Certificate of lawfulness to certify that the proposed works to carry on and complete the erection of a dwellinghouse approved by planning permission dated 23 June 2023, as amended by planning permission dated 7 April 2025, would be lawful Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
23 Jun 2026
✓
Approved
14 Sept 2026

Approved on 14 Sept 2026 · Delegated · Last checked 15 Sept 2026

Documents 10

Decision & officer reports 4

PDF Decision Notice_620261083LAWP.pdf (775 kb) Document · 14 Sept 2026 View ↗ PDF Delegated Report_620261083LAWP(3).pdf (185 kb) Document · 14 Sept 2026 View ↗ PDF A. Decision Notice_620230677FULL.pdf (543 kb) Document · 23 Jun 2026 View ↗ PDF A. Decision Notice_620242237VAR.pdf (5112 kb) Document · 23 Jun 2026 View ↗

Statements & assessments 1

PDF Statement to verify the application - June 2026.pdf (241 kb) Document · 23 Jun 2026 View ↗

Plans & drawings 2

PDF 21-J3888-LP01 - Location Plan.pdf (146 kb) Document · 23 Jun 2026 View ↗ PDF C. 21-J3888-01 B - Proposed Site Layout showing extent of trench dug.pdf (1996 kb) Document · 23 Jun 2026 View ↗

Consultation & comments 1

PDF NCPC Response_Redacted.pdf (169 kb) Document · 16 Aug 2026 View ↗

Other documents 2

PDF ApplicationFormRedacted.pdf (231 kb) Document · 23 Jun 2026 View ↗ PDF B. Site Photographs taken 20 June 2026.pdf (3242 kb) Document · 20 Jun 2026 View ↗

All documents on the council site ↗

Associated applications 6

Site constraints 6

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 ↗
Priority habitat: Deciduous woodland
A habitat of principal importance. It shapes the ecology work and the biodiversity net gain a scheme has to show.
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. A site survey can differ.
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.
Local nature reserve 106 m away: Northaw Great Wood Country Park
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.
Habitat network: Other Priority Habitats - NEZ
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
SSSI 106 m away: Northaw Great Wood SSSI
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
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 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.

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Other new applications on this street

5 Oct 2026Pending

1 Carbone Hill Northaw Potters Bar EN6 4PJ

T1 (TPO 528 - T20) Oak height 11m spread 5m, 2m reduction of entire crown as tre...

6/2026/1756/TPO
29 Jun 2026Pending

35 Carbone Hill Northaw Potters Bar EN6 4PN

Erection of 2 no. detached houses with integral garages

6/2026/1093/FULL

Nearby new applications

14 Oct 2026Pending

39 The Ridgeway Northaw EN6 4BD

Erection of dwelling and garage following the demolition of existing dwelling

6/2026/1830/FULL
5 Oct 2026Pending

1 Carbone Hill Northaw Potters Bar EN6 4PJ

T1 (TPO 528 - T20) Oak height 11m spread 5m, 2m reduction of entire crown as tre...

6/2026/1756/TPO
22 Sept 2026Pending

23 The Ridgeway Cuffley EN6 4BB

Erection of new 5 bed dwelling following the demolition of existing dwelling

6/2026/1633/FULL
2 Sept 2026Withdrawn

37 The Ridgeway Cuffley EN6 4BB

T1 English Oak (Quercus robur) ref T316 fell to ground level

6/2026/1531/TPO
2 Sept 2026Approved

Home Wood, rear of 40 The Ridgeway

5 day notice of the removal of a dead and diseased tree (TPO3 W35)

6/2026/1535/TPO
24 Aug 2026Approved

23 The Ridgeway Potters Bar EN6 4BB

Certificate of lawfulness for the erection of an outhouse to accommodate gym fac...

6/2026/1489/LAWP

Important details

Council
Welwyn Hatfield
Application type
LAWFUL DEVELOPMENT - PROPOSED
Postcode
EN6 4PL
Received
23 Jun 2026
Validated
23 Jun 2026
Parish
Northaw and Cuffley
Case officer
Show
Decision
Granted
Decision date
14 Sept 2026
Decision level
Delegated
Applicant
Show
Agent
Show

How this decision compares

Decided in 83 days from validation, 27 days slower than Welwyn Hatfield's median of 56 for lawful development certificates. Approved, as 81% of lawful development certificates here are.

76%decided within 8 weeks
81%approved
125decided in the last year

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

Consultation & key dates

Comments by
1 Sept 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
15 Carbone Hill Northaw Potters Bar EN6 4PJ
Erection of a single storey front link extension to connect the detached outbuilding to t…
6/2025/1946/HOUSE
2025 Approved
15 Carbone Hill Northaw Potters Bar EN6 4PJ
Erection of a single storey front link extension to connect the detached outbuilding to t…
6/2025/1946/HOUSE
2025 Refused
Land adjacent to The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Submission of details pursuant to condition 1 (Construction Management Plan) on planning…
6/2025/1648/COND
2025 Refused
Land adjacent to The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Submission of details pursuant to condition 1 (Construction Management Plan) on planning…
6/2025/1648/COND
2025 Approved
15 Carbone Hill Northaw Potters Bar EN6 4PJ
Loft conversion including two dormer windows and 4 skylights and removal of chimney stack
6/2025/1183/HOUSE
2025 Approved
15 Carbone Hill Northaw Potters Bar EN6 4PJ
Loft conversion including two dormer windows and 4 skylights and removal of chimney stack
6/2025/1183/HOUSE
2025 Approved
Land at The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Variation of condition 7 (Arboricultural Method Statement and Tree Protection Plan) and 1…
6/2025/0787/VAR
2025 Approved
Land at The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Variation of condition 7 (Arboricultural Method Statement and Tree Protection Plan) and 1…
6/2025/0787/VAR
2024 Approved
Land adjacent to The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Variation of Condition 6 (Drawing numbers) on planning permission 6/2023/0677/FULL
6/2024/2237/VAR
2024 Approved
Land at The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Erection of a dwelling house with detached double garage following the demolition of exis…
6/2024/0607/FULL
2023 Approved
Land adjacent to the Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Erection of a dwellinghouse
6/2023/0677/FULL
2023 Approved
Land adjacent to the Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Erection of a dwellinghouse
6/2023/0677/FULL
2019 Refused
The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Erection of boundary fence, hedge, brick piers and gates following the removal of existin…
6/2019/0629/HOUSE
2018 Approved
The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Erection of boundary fence, laurel hedge, brick piers and double gates following the remo…
6/2018/3158/HOUSE
2018 Refused
11 Carbone Hill Northaw Potters Bar EN6 4PJ
Certificate of lawfulness for a double car port and pool house
6/2018/2769/LAWP
2018 Refused
11 Carbone Hill Northaw Potters Bar EN6 4PJ
Erection of first floor extension , Internal alterations with window upgrades and constru…
6/2018/1960/HOUSE
2018 Approved
The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Retrospective erection of garden store
6/2018/2084/HOUSE
2017 Approved
Carbone House Carbone Hill Northaw Potters Bar EN6 4PL
Raised roof ridge and pitch and installation of dormer and 4x rooflights for loft convers…
6/2017/2343/HOUSE
2017 Refused
The Warren, 8 Carbone Hill Northaw Potters Bar EN6 4PL
Certificate of lawfulness for existing outbuilding to be ancillary to the existing dwelli…
6/2017/0430/LAWE
2017 Approved
17 Carbone Hill, Northaw, Potters Bar, EN6 4PJ
Erection of a single storey side and rear ‘in-fill’ extension and alterations to fenestra…
6/2017/0187/HOUSE
2017 Approved
17 Carbone Hill Northaw Potters Bar EN6 4PJ
Approval of details reserved by condition 1 (colour finish of external surfaces) 2 (soft…
6/2017/0174/COND
2016 Refused
17 Carbone Hill Northaw Potters Bar EN6 4PJ
Erection of a detached double garage in the front garden
6/2016/2599/HOUSE
2016 Refused
17 Carbone Hill Northaw Potters Bar EN6 4PJ
Erection of a detached double garage in the front garden
6/2016/2599/HOUSE
2016 Approved
17 Carbone Hill Northaw Potters Bar EN6 4PJ
Proposed 1.8m pillars to be erected to take a closed boarded gated opening into the prope…
6/2016/2341/HOUSE
2016 Approved
17 Carbone Hill Northaw Potters Bar EN6 4PJ
Proposed 1.8m pillars to be erected to take a closed boarded gated opening into the prope…
6/2016/2341/HOUSE
Welwyn Hatfield
Planning Authority Score
2.1/10
Poor
#272 of 296 councils
Relevant to this application:
Householder decisions

Welwyn Hatfield is slower than most councils at deciding householder applications, ranking #224 out of 296. 50% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Welwyn Hatfield decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #200 of 296
86%
Householder approved
Below avg (90%) #246 of 296
53%
Decided in 8 weeks
Below avg (63%) #224 of 296
50%
Extended time limit
Above avg (41%) #229 of 296
84%
Minor dwellings approved
63 decided (1-9 homes)
83%
Major dwellings approved
12 decided (10+ homes)
73%
Change of use approved
22 decided
633
Total decisions
87 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings