England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates

25,151Searchable applications

310Recorded as pending

86%Approval rate · 20,665 approved or refused records

2,826Refused applications

17,839 approved · 2,826 refused · 1,329 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026

Planning information Planning and building Local plan Our Local Plan Pre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation Area Article 4 directions Article 4 Directions

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas9 mapped area records

Article 4 direction areasNo boundary records available in this collection

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Sources: Planning Data conservation areas and Article 4 direction areas. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

Decided - Granted6/2016/1559/HOUSE
Erection of two storey detached annexe following demolition of existing garage
Home Farm, 6 Whitehill, Ayot St Peter, Welwyn, AL6 9AF
Received 28 Jul 2016
Decided - Granted6/2017/2029/EM
Erection of a wooden panel fence in rear garden to replace existing chain link fence
291 Knightsfield Welwyn Garden City AL8 7NH
Received 11 Sept 2017
Decided - Granted6/2026/0478/FULL
Construction of a Multi Use Games Area
Howe Dell School The Runway Hatfield AL10 9AH
Received 16 Mar 2026
Decided - Granted6/2020/1071/HOUSE
Conversion of existing garage and outbuilding into habitable rooms, increase of garage height and alteration to garage fenestration and existing front porch
Toad Cottage 6 Home Farm Cottages Ponsbourne Park Newgate Street Hertford SG13 8QT
Received 13 May 2020
Decided - Granted6/2018/0226/TPO
Reduce 2x Oak Trees (T3 & T4) by 1metre & reduce 1x Hornbeam T2 by 1metre covered by (TPO 710 (2017)
1 Oak Piece Welwyn AL6 0XE
Received 24 Jan 2018
Decided - Granted6/2022/2359/FULL
Erection of sales/office/staff facilities following the demolition of an existing building
Timber Yard Coopers Lane Northaw Potters Bar EN6 4NE
Received 11 Oct 2022
Decided - Refused6/2022/1416/LAWP
Certificate of lawfulness for placement of temporary portacabin.
Potterells Medical Centre Station Road Welham Green Hatfield Hertfordshire AL9 7SN
Received 20 Jun 2022
Decided - Granted6/2017/0167/HOUSE
Extension of existing fence on side boundary
23 Great Braitch Lane Hatfield AL10 9FD
Received 31 Jan 2017
Decided - Granted6/2017/1525/HOUSE
Erection of a rear conservatory
10 Meadow Green Welwyn Garden City AL8 6SS
Received 13 Jul 2017
Appeal Decided - Dismissed6/2018/2537/EM
Removal of chimney stack
1 Middlefield Welwyn Garden City AL7 4DQ
Received 3 Oct 2018
Decided - Granted6/2017/0229/COND
Approval of details reserved by conditions 2 (microgravity survey) & 9 (boundary treatments) on planning permission S6/2014/2178/FP
Land to the rear of 19-21 Furzen Crescent Hatfield AL10 9QN
Received 7 Feb 2017
Decided - Granted6/2016/2143/HOUSE
Erection of single storey extension, alteration to roof, creation of lower-ground floor storage/cellar and associated alterations.
1B Harmer Dell Welwyn AL6 0BE
Received 14 Oct 2016
Decided - Granted6/2023/0054/VAR
Variation of condition 5 (plans), on planning permission 6/2018/1879/HOUSE
24 Heathbrow Road Welwyn AL6 0QG
Received 10 Jan 2023
Decided - Withdrawn6/2021/0622/COND
Submission of details pursuant to condition 21 (decommissioning of investigative boreholes) on planning permission 6/2018/0873/OUTLINE
Land to North East of Welwyn Garden City Panshanger Welwyn Garden City AL27 2QJ
Received 25 Feb 2021
Decided - Granted6/2019/0402/FULL
Change of use of ground floor units from retail (use class A1) and professional services (use class A2) to a gymnasium (use class D2)
Former Argos and Belvoir Premises Longcroft House Fretherne Road Welwyn Garden City AL8 6PZ
Received 21 Feb 2019
Decided - Granted6/2023/0809/HOUSE
Conversion of the existing garage into habitable space
7 Sutherland Avenue Cuffley Potters Bar EN6 4EQ
Received 17 Apr 2023
Decided - Granted6/2026/0275/EM
Installation of electric charging point
66 Brockswood Lane Welwyn Garden City AL8 7BQ
Received 17 Feb 2026
Decided - Split6/2018/1923/COND
Submission of details pursuant to condition 7 (traffic noise) 10 (visibility splays) and 11 (car parking) on planning permission 6/2016/0168/FULL
Swan Lodge Bell Lane Brookmans Park Hatfield AL9 7AY
Received 20 Jul 2018
Decided - Granted6/2015/2374/COND
Details reserved by condition 3 (Materials) on planning permission N6/2015/1046/FP - Erection of single storey front extension, raised flat roof to match existing front flat roof and conversion of existing garage to utility
21 Dellcott Close, Welwyn Garden City, AL8 7BB
Received 25 Nov 2015
Decided - Granted6/2023/0001/TPO
T1 – Ash – height 12m / spread 3m. Failed at base, fallen, and now laying across further trees and near a footpath. To remove tree. T2 – Ash – height 14m / spread 10m. Slight sign of ash die back on the right hand side of large trunk which forks over footpath. To remove leaning trunk with fork over footpath. Reduce remaining by 3m (height 14-11 & span 10-7), due to safety issue as stem leaning over footpath and first signs of ash die back. T3 – Ash – height 16m / spread 5m. Set in a cluster of other Ash trees and has first sign of ash die back. To remove tree due to footpath and road construction for short term access. Re-planting will take place. T4 – Ash – height 16m / spread 8m, has first signs of ash die back. To reduce crown by 3m all over (height 16-13 & span 8-5). and remove epicormic growth at base, due to size, health and location for trees, a reduction is advisable. TPO 14 A1
56 Bell Lane Hatfield AL9 7AY
Received 3 Jan 2023
Decided - Granted6/2021/2004/EM
Demolition of detached garage, erection of a garage side extension, part single storey part two storey rear extension. Installation of window in existing side elevation and internal alterations.
2 Dognell Green Welwyn Garden City AL8 7BL
Received 1 Jul 2021
Decided - Granted6/2020/2513/HOUSE
Erection of part single storey, part two storey rear extension with rear balcony, erection of two storey front extension and raising of roof ridgeline. Insertion of side dormer and external alterations
45 Hill Rise Cuffley Potters Bar EN6 4EH
Received 30 Sept 2020
Decided - Withdrawn6/2020/2967/EM
Erection of a first floor side extension
37 Sherrardspark Road Welwyn Garden City AL8 7JY
Received 11 Nov 2020
Decided - Granted6/2018/2845/HOUSE
Erection of front entrance gates
29 The Ridgeway, Cuffley, Potters Bar, EN6 4BB
Received 5 Nov 2018

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Researching a proposal in Welwyn Hatfield Borough Council

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

How to search planning applications

Guides to planning records

All planning guides

Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
UK research
Published 16 Jul 2026Updated 13 Sept 2026
Understanding planning · 13 min read
Planning permission drawings: how to read plans
Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.
UK research
Published 6 Aug 2026Updated 13 Sept 2026
Property research · 13 min read
Planning approval rates: how to read council statistics
Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.
UK research
Published 13 Aug 2026Updated 13 Sept 2026

What these statistics cover

These figures describe applications collected by PlanningTrack for Welwyn Hatfield Borough Council, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

Check collection coverage