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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
23,014Searchable applications
313Recorded as pending
86%Approval rate · 18,752 approved or refused records
2,637Refused applications

16,115 approved · 2,637 refused · 1,188 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Withdrawn6/2021/2086/LAWP

    Certificate of lawfulness for the erection of a self contained residential accomodation as part of the existing care home.

    10 Great North Road Welwyn AL6 0PL

    Received 9 Jul 2021
  2. Decided - Refused6/2023/0478/HOUSE

    Erection of two storey side extension

    3 Heathlands Welwyn AL6 0UU

    Received 2 Mar 2023
  3. Decided - Withdrawn6/2017/1588/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.995m in depth, 4m in height and 2.8m to the eaves.

    35 Station Road Welham Green Hatfield AL9 7PF

    Received 19 Jul 2017
  4. Under Consultation6/2026/1469/EM

    Erection of a two storey rear extension, installation of side dormer with loft conversion with fenestration alterations

    8 The Valley Green Welwyn Garden City AL8 7DQ

    Received 19 Aug 2026
  5. Decided - Granted6/2022/2415/TPO

    1 x Hornbeam to reduce by approximately 3m in height and 2m in width. Lift to 3.5m over footpath 1 x Ash to reduce by approximately 2m in height, 2.5m in width on property side and 2m on remaining Both trees are to be reduced to create light into garden, maintain size and reduce debris

    3 Scholars Mews Welwyn Garden City AL8 7JQ

    Received 18 Oct 2022
  6. Decided - Granted6/2024/0377/EM

    Erection of single storey extension to rear elevation for accessible bedroom with rear access

    59 Handside Lane Welwyn Garden City AL8 6SH

    Received 27 Feb 2024
  7. Decided - Granted6/2020/2982/TPO

    T1 RHS Oak 30% Crown reduction and deadwood. T2 LHS Oak Cut back side by 2M.

    33 Peplins Way Hatfield AL9 7UR

    Received 12 Nov 2020
  8. Decided - Granted6/2018/0794/HOUSE

    Erection of front porch

    37 Bullens Green Lane, Hatfield, St Albans, AL4 0QR

    Received 26 Mar 2018
  9. Decided - Granted6/2026/1146/EM

    Erection of a two storey side extension and single storey rear extension, three dormer windows to the front and one dormer window to the rear, roof lights and alterations to fenestration

    66 Peartree Lane Welwyn Garden City AL7 3UH

    Received 1 Jul 2026
  10. Decided - Granted6/2017/1937/VAR

    Variation of condition 9 (approved plans) on planning permission 6/2016/2699/FULL

    8-10 Wendover Drive Welwyn AL6 9LT

    Received 30 Aug 2017
  11. Decided6/2021/0286/TC

    Fell 1 x Ash Tree

    8 Densley Close Welwyn Garden City AL8 7JX

    Received 1 Feb 2021
  12. Decided6/2017/2771/EM

    Fell 2 x Apple trees

    7 Valley Road Welwyn Garden City AL8 7DG

    Received 28 Nov 2017
  13. Decided - Granted6/2019/2912/HOUSE

    Erection of single storey rear extension following demolition of existing conservatory

    25 Wilshere Road Welwyn AL6 9PU

    Received 19 Nov 2019
  14. Appeal Decided - Allowed6/2025/2144/TPO

    T3 Hornbeam to 25% crown thin.

    1 Juniper Gardens Welwyn AL6 0XH

    Received 8 Oct 2025
  15. Decided6/2018/0662/TPO

    Fell 1 x Corkscrew Willow tree to ground level - Conservation area

    56 Pentley Park Welwyn Garden City AL8 7SG

    Received 8 Mar 2018
  16. Decided - Granted6/2022/2009/EMT

    30% crown reduction in 2 large trees (Robinia pseudoacacia) in rear garden

    20 Walden Road Welwyn Garden City AL8 7PF

    Received 30 Aug 2022
  17. Decided - Granted6/2017/0655/HOUSE

    Retention of a first floor front extension and the erection of a part first floor side and rear and part two-storey rear extensions. (Part retrospective)

    2 South Drive Cuffley Potters Bar EN6 4HP

    Received 30 Mar 2017
  18. Decided - Granted6/2021/2412/COND

    Submission of details pursuant to condition 1 (condenser units) on planning permission 6/2021/0973/FULL

    Aquarius House Bessemer Road Welwyn Garden City AL7 1HH

    Received 16 Aug 2021
  19. Decided - Withdrawn6/2024/1195/EM

    Erection of a part single, part double storey rear extension to replace existing rear and side extensions and conversion of existing outbuilding, raising of roof to existing garage, installation of a rear dormer window to facilitate a loft conversion. Insertion of first floor side window and installation of rooflights to the existing roof to both sides.

    38 Barleycroft Road Welwyn Garden City AL8 6JU

    Received 26 Jun 2024
  20. Decided - Granted6/2026/0746/EMT

    T1, Conifer: Fell to monolith at approximately 1m to reduce excessive shading and oversized canopy, retaining standing deadwood for biodiversity in line with BS3998:2010. T2, Cherry: Remove declining limb to mitigate failure risk and sever ivy at base to reduce wind-sail loading and allow inspection of main stem, prolonging the tree's safe useful life

    10 Marsden Close Welwyn Garden City AL8 6YE

    Received 27 Apr 2026
  21. Decided - Granted6/2026/0466/HOUSE

    Erection of single storey side extension, front porch with new access steps, changes to fenestration at rear to replace french door and window set with bifold doors

    93 Bluebridge Road Brookmans Park AL9 7UN

    Received 13 Mar 2026
  22. Decided - Granted6/2026/0185/EM

    Installation of an EV charger on the garage wall

    64 Moorlands Welwyn Garden City AL7 4QG

    Received 3 Feb 2026
  23. Decided - Granted6/2023/0145/HOUSE

    Erection of a 2 storey side extension, following the demolition of existing detached garage, and alterations to openings to front and rear elevations

    10 Thrush Avenue Hatfield AL10 8QU

    Received 20 Jan 2023
  24. Decided - Refused6/2021/0070/PN27

    Prior approval for the construction of an additional storey and associated works to facilitate the enlargement of the dwellinghouse by approximately 1.89m in height.

    41 The Avenue Welwyn AL6 0PW

    Received 8 Jan 2021

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

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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

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    Planning application documents: what to read first

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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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