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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
28,226Searchable applications
307Recorded as pending
87%Approval rate · 23,336 approved or refused records
3,130Refused applications

20,206 approved · 3,130 refused · 1,510 withdrawn. Received dates in our records: 1 Nov 1999 to 13 Oct 2026. Most recent record check: 17 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 Counts reflect the last collected status; some records may be out of date.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 buildingLocal plan Our Local PlanPre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation AreaArticle 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

  1. Decided - Granted6/2015/1886/HOUSE

    Erection of a part two storey and part single storey rear extension following demolition of existing single storey rear extension.

    11 Two Acres, Welwyn Garden City, AL7 4NS

    Received 7 Sept 2015
  2. Decided - Granted6/2023/2105/LAWE

    Certificate of lawfulness for a hot food take away in the existing unit- Comprised of Kitchen, warehouse space, customer reception and W/C with car parking for two vehicles

    Tewin Road Business Centre, Unit 7 Garden Court Welwyn Garden City AL7 1BH

    Received 17 Oct 2023
  3. Decided - Granted6/2020/0629/PN8

    Prior approval for the erection of a single storey rear extension measuring 6.00m in depth, 2.82m in height and 2.82m to the eaves

    25 Maryland Hatfield AL10 8DY

    Received 4 Mar 2020
  4. Decided - Granted6/2026/0825/TPO

    TPO 800 T1 - Chestnut tree - crown reduce by approx 4-5m - tree is multi stem and we have recently removed the whole crown on one stem due to being completely dead. Client is worried about the balancing weight now on the other stem. Please see attached photos.

    Brambles Briary Wood End Welwyn AL6 0TD

    Received 12 May 2026
  5. Decided - Granted6/2020/3069/HOUSE

    Erection of two storey side and single storey rear extension

    3 Wood View Cuffley Potters Bar EN6 4RE

    Received 19 Nov 2020
  6. Decided - Split6/2022/2192/COND

    Submission of details pursuant to condition 22 (Car club implementation and management scheme for Block 10 and 11) on planning permission 6/2018/0171/MAJ

    Former Shredded Wheat Factory Welwyn Garden City AL8 6UN

    Received 22 Sept 2022
  7. Decided - Granted6/2019/2287/PN8

    Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 3.6m in heights and 2m to the eaves

    22 Bishops Rise Hatfield AL10 9HH

    Received 16 Sept 2019
  8. Decided - Refused6/2021/0943/TPO

    T1 - re-pollard 3-4m T2 - fell Beech tree to ground level T3 - oak tree 3-4m crown reduction T4 - Beech tree 5-6m crown reduction

    12 Mardley Hill Welwyn AL6 0TN

    Received 23 Mar 2021
  9. Decided - Refused6/2021/2677/LAWP

    Certificate of lawfulness for part single storey side extension and part single storey rear extension, with insertion of roof light, to replace conservatory, plus 2 roof lights and a sun pipe into existing roof.

    7 Willow Grove Welwyn Garden City AL8 7NA

    Received 15 Sept 2021
  10. Decided6/2021/1284/TC

    Reduce 1 x Hawthorn tree by 3m, re-pollard 1 x Weeping Willow tree, reduce 1 x Silver Birch tree by 2m, reduce 12 x Hornbeam trees by 3m, fell 1 x Oak tree, reduce 1 x Oak tree by 3m, raise crown of 2 x Conifer by 2.5m covered by conservation area

    Templewood Primary School Pentley Park Welwyn Garden City AL8 7SD

    Received 21 Apr 2021
  11. Decided - Granted6/2021/3560/HOUSE

    Erection of a single storey side extension following demolition of existing side conservatory and extension and conversion of existing detached garage into a home office.

    52 London Road Knebworth Hertfordshire SG3 6HH

    Received 31 Dec 2021
  12. Decided - Granted6/2025/0399/EM

    3mx3m Lean to conservatory with conservabase floor

    261 Daniells Welwyn Garden City AL7 1QD

    Received 3 Mar 2025
  13. Decided - Granted6/2015/2441/HOUSE

    Erection of two storey front, rear and side extensions along with rooms in the roof

    5 Copse Hill Welwyn AL6 0RY

    Received 8 Dec 2015
  14. Decided - Granted6/2018/0137/LB

    External refurbishment including replacing the existing render and paint

    Oshwal Centre Coopers Lane Road Northaw Potters Bar EN6 4DG

    Received 16 Jan 2018
  15. Decided - Granted6/2024/1635/EM

    Replacement of original wooden front door with modern very close equivalent door

    29 Coltsfoot Welwyn Garden City AL7 3HZ

    Received 27 Aug 2024
  16. Decided - GrantedS6/2013/2404/FP

    Use of land as a cattery including the erection of a single storey building to form seven portable cat pens

    20 Kingswell Ride, Cuffley, Potters Bar, EN6 4LH

    Received 18 Nov 2013
  17. Decided - RefusedW6/2014/0997/EM

    Erection of single storey side extension and alterations to conservatory

    10 Cypress Avenue, Welwyn Garden City, AL7 1HN

    Received 7 May 2014
  18. Decided - Granted6/2023/0108/COND

    Submission of details pursuant to condition 9 (external lighting) and condition 12 (landscape) on planning permission 6/2020/2818/FULL

    Caddington House 61 New Road Digswell AL6 0AL

    Received 16 Jan 2023
  19. Decided - Refused6/2018/0341/COND

    Submission of details pursuant to condition 2 (surface water drainage scheme) on planning permission 6/2017/0777/FULL, dated 20/06/2017

    Land between 46 & 48 Peplins Way Brookmans Park Hatfield AL9 7UU

    Received 9 Jan 2018
  20. Decided - Refused6/2018/0814/HOUSE

    Installation of 2 x front dormer windows

    8 Valley Road Welwyn Garden City AL8 7DF

    Received 27 Mar 2018
  21. Appeal Decided - Dismissed6/2016/0669/FULL

    Erection of 1 dwellinghouse

    Land adjacent to 26 Starling Lane, Cuffley, Potters Bar, EN6 4JX

    Received 12 Apr 2016
  22. Decided - Refused6/2017/2817/HOUSE

    Erection of two storey side and single storey side and rear extension including alterations to openings

    22 Mount Pleasant Close Hatfield AL9 5BZ

    Received 1 Dec 2017
  23. Decided - Granted6/2020/1757/HOUSE

    Erection of single-storey side extension following demolition of existing garage

    20 Bradgate Cuffley Potters Bar EN6 4RL

    Received 8 Jul 2020
  24. Decided - Refused6/2021/1196/TPO

    Fell 1 x Scots Pine (T1)

    24 Mornington Digswell Welwyn AL6 0AJ

    Received 13 Apr 2021

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.

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  • 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.

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  • 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.

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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.

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