8 The Stables Pottersheath Welwyn Hertfordshire AL6 9GR Data via plota.co.uk

26/02183/NMA - Non-Material Amendment Approved

Proposal

Widen first floor (obscured) window on the SW elevation (as Non-Material Amendment to planning permission 26/00036/FPH granted 27/02/2026) Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
28 Aug 2026
✓
Approved
21 Sept 2026

Approved on 21 Sept 2026 · Delegated · Last checked 23 Sept 2026

Associated applications 3

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 ↗
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
Radon affected area, class 2; 3 listed buildings within 150 m; Inside the Woolmer Green built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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 £1,495,000 in December 2019. Detached house, freehold.

6 December 2019£1,495,000New build

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

Building

Floor area318 m² (3,423 sq ft)
Energy ratingC (76 out of 100), could reach B
PropertyDetached house
Built2019
HeatingBoiler and radiators, LPG
WallsAverage thermal transmittance 0.27 W/m²K

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

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Important details

Application type
Non-Material Amendment
Postcode
AL6 9GR
Received
28 Aug 2026
Validated
28 Aug 2026
Ward
Knebworth Ward
Parish
Codicote Parish Council
Case officer
Show
Target decision
25 Sept 2026
Decision
Agreed
Decision date
21 Sept 2026
Decision level
Delegated
Applicant
Show

Public comments

No public comments yet.

Last counted 23 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15191271
Planning Portal ref
PP-15191271
North Hertfordshire
Planning Authority Score
6.9/10
Good
#66 of 296 councils
Relevant to this application:
Householder decisions

North Hertfordshire ranks #128 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (95%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
North Hertfordshire decision statistics
Based on MHCLG data, the year to March 2026
93%
Overall approval rate
Above avg (87%) #62 of 296
95%
Householder approved
Above avg (90%) #87 of 296
69%
Decided in 8 weeks
Above avg (63%) #128 of 296
32%
Extended time limit
Below avg (41%) #65 of 296
82%
Minor dwellings approved
112 decided (1-9 homes)
84%
Major dwellings approved
19 decided (10+ homes)
90%
Change of use approved
21 decided
1,102
Total decisions
82 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.

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.