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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
24,020Searchable applications
313Recorded as pending
86%Approval rate · 19,654 approved or refused records
2,738Refused applications

16,916 approved · 2,738 refused · 1,252 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2017/0587/FULL

    Demolition of existing log store and outbuildings, Conversion of existing garage to form a 3 bedroom residential dwelling unit including rear extension, insertion of dormer windows and roof lights, and alterations.

    Maran House 56 Hertford Road Digswell WELWYN AL6 0BX

    Received 22 Mar 2017
  2. Decided - Refused6/2020/1490/HOUSE

    Erection of single storey front extension

    6 Great North Road Welwyn AL6 0PL

    Received 19 Jun 2020
  3. Decided - Granted6/2018/2033/COND

    Submission of details pursuant to condition 2 (landscape) and 13 (external lighting) on planning permission 6/2016/2624/FULL

    Mercury House 1 Broadwater Road Welwyn Garden City AL7 3BQ

    Received 3 Aug 2018
  4. Under Consideration6/2026/1347/TPO

    T1 Horse Chestnut 1m full crown reduction T2 Hornbeam 2m full crown reduction (covered by TPO468, TPO1054 (2023) &TPO981)

    53 Pine Grove Brookmans Park AL9 7BL

    Received 31 Jul 2026
  5. Decided - Granted6/2026/1155/EMT

    Reduce 1 x willow to a 3m standing trunk.

    40 Attimore Road, Welwyn Garden City, AL8 6LP

    Received 2 Jul 2026
  6. Appeal Decided - Dismissed6/2016/2669/FULL

    Erection of a two bedroom single storey detached dwelling and formation of hardstanding

    Land adjacent to 38 Reynards Road Welwyn AL6 9TP

    Received 16 Dec 2016
  7. Decided - Granted6/2019/1388/VAR

    Variation of condition 10 (approved plans) on planning permission 6/2018/2715/FULL

    The Wood Barn The Estate Yard North Mymms Park North Mymms Hatfield AL9 7TR

    Received 10 Jun 2019
  8. Decided - Granted6/2019/1411/MAJ

    Erection of a multi-franchise car dealership (sui generis use) with offices (B1 use class), workshops (B2 use class) and car storage (B8 use class), together with car parking, cycle parking, boundary treatment, landscaping, lighting and access

    Plot 5100, Mosquito Way, Hatfield Business Park, Hatfield, AL10 9WN

    Received 12 Jun 2019
  9. Decided - Granted6/2023/1586/HOUSE

    Erection of single storey rear extension following demolition of existing rear extension

    49 Green Lanes Hatfield AL10 9JU

    Received 31 Jul 2023
  10. Decided - Refused6/2018/2541/HOUSE

    Erection of first floor rear extension

    19 Dayemead Welwyn Garden City AL7 4RX

    Received 3 Oct 2018
  11. Decided - Granted6/2024/1928/FULL

    Erection of new dwelling following demolition of existing dwelling and garage

    110 Hawkshead Road Little Heath Potters Bar EN6 1NG

    Received 9 Oct 2024
  12. Decided - Granted6/2017/1669/COND

    Submission of details pursuant to condition 7 (refuse strategy) on planning permission 6/2015/1901/RM

    Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ

    Received 28 Jul 2017
  13. Decided - Granted6/2019/2104/EM

    Erection of a single storey rear extension, following demolition of existing conservatory

    62 Moorlands Welwyn Garden City AL7 4QG

    Received 22 Aug 2019
  14. Decided6/2020/2955/TC

    1 x Norway Maple to reduce by 4m height & 3m width.

    4 Homerfield Welwyn Garden City AL8 6QZ

    Received 11 Nov 2020
  15. Decided - Granted6/2021/0190/HOUSE

    Erection of a single storey rear extension

    23 Glebeland Hatfield AL10 8AA

    Received 21 Jan 2021
  16. Decided - Granted6/2018/1051/HOUSE

    Erection of two storey rear extension including alterations to openings

    44 Longcroft Lane Welwyn Garden City AL8 6EF

    Received 23 Apr 2018
  17. Decided - Granted6/2018/1178/HOUSE

    Erection of a single storey side and front extension following demolition of existing single storey structure

    56 Talbot Road Hatfield AL10 0QY

    Received 4 May 2018
  18. Decided - Granted6/2017/0373/HOUSE

    Erection of first floor side and rear extension and single storey front extension.

    22 Great North Road Brookmans Park Hatfield AL9 6NF

    Received 27 Feb 2017
  19. Decided - Granted6/2018/1789/EM

    Erection of conservatory following demolition of existing conservatory

    10 Beechfield Road Welwyn Garden City AL7 3RF

    Received 9 Jul 2018
  20. Decided - Split6/2022/2664/COND

    Submission of details pursuant to condition 1 (external materials) and condition 2 (details of proposed side balustrades) on planning permission 6/2018/1879/HOUSE

    24 Heathbrow Road Welwyn AL6 0QG

    Received 23 Nov 2022
  21. Decided - Granted6/2016/2162/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    160 Harwood Hill Welwyn Garden City AL8 7AG

    Received 16 Oct 2016
  22. Decided - Withdrawn6/2020/3369/FULL

    Retention of warehouse canopy and proposed extension to existing warehouse canopy.

    Lighting Packaging Supplies Frobisher Way Hatfield AL10 9TY

    Received 17 Dec 2020
  23. Decided - Granted6/2024/1372/TPO

    TPO 602 (2017) T11 lime tree due to its bad condition

    Essendon House Church Street Hatfield AL9 6AR

    Received 17 Jul 2024
  24. Decided - Granted6/2021/0091/LAWP

    Certificate of lawfulness for the erection of single storey side and rear extensions, following demolition of existing rear extension.

    45 Codicote Road Welwyn AL6 9TT

    Received 13 Jan 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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