PlanningTrack
Get started

England · Local authority

Welwyn Hatfield planning applications

PlanningTrack collects planning applications and decisions from the public planning register of Welwyn Hatfield Borough Council. Search an address, application reference or proposal. Official Welwyn Hatfield website

Collected application statistics

Collected records · All available dates
40,297Searchable applications
283Recorded as pending
86%Approval rate · 33,821 approved or refused records
4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 8 Nov 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2015/2168/HOUSE

    Installation of 2 side facing dormer windows.

    42 Georges Wood Road, Brookmans Park, Hatfield, AL9 7BT

    Received 20 Oct 2015
  2. Decided - RefusedS6/2013/0210/FP

    Demolition of existing garage, single storey side extension and rear conservatory, erection of a porch and two storey side and rear extensions to include front and rear dormers and alterations to existing roof and to existing side dormer

    28 Hawkshead Lane, North Mymms, HATFIELD, AL9 7TB

    Received 28 Jan 2013
  3. Decided - Granted6/2018/1293/LAWP

    Certificate of lawfulness for a hip to gable roof alteration and construction of a rear dormer window

    21 Holme Road Hatfield AL10 9LH

    Received 16 May 2018
  4. Decided - Granted6/2021/1766/ADV

    Installation of 3 x fascia signs, externally illuminated hanging sign, 2 x no internally illuminated menu box signs, 4 x no etched glass decal logo signs, 1 x awning

    4-6 Howardsgate Welwyn Garden City AL8 6BQ

    Received 7 Jun 2021
  5. Decided6/2024/0454/TC

    1 x Holly to reduce by approximately 1.5m in height, trim sides in tight forming a more compact ball shape

    5 Mimram Road Welwyn AL6 9HA

    Received 8 Mar 2024
  6. Decided - Granted6/2017/1313/ADV

    Installation of fascia signage and wall signage

    Morrison Supermarket 40 Black Fan Road Welwyn Garden City AL7 1RY

    Received 16 Jun 2017
  7. Decided - Granted6/2017/1043/EM

    Erection of a two storey rear and first floor side extension with 1 rooflight and balcony, erection of a car port to the side of property, partial conversion of garage and removal of Leylandi Conifer tree.

    336 Knightsfield Welwyn Garden City AL8 7NQ

    Received 12 May 2017
  8. Decided - GrantedW6/2004/1072/EM

    ADDITION OF HARDSTAND TO EXISTING HARDSTANDING

    38 Beechfield Road, Welwyn Garden City, AL7 3RF

    Received 13 Jul 2004
  9. Decided - Granted6/2023/2125/VAR

    Variation of condition 2 (approved plans) on planning permission 6/2023/1006/HOUSE to adjust the balance of brickwork and timber on each elevation and to enclose all sides of the approved structure

    44 Mill Lane Welwyn AL6 9ET

    Received 19 Oct 2023
  10. Decided - Granted6/2025/1185/HOUSE

    Erection of first floor side extension and removal of chimney

    9 Greenfield Hatfield AL9 5HW

    Received 13 Jun 2025
  11. Decided - Granted6/2021/1014/PN27

    Prior approval for the construction of an additional storey and associated replacement roof to facilitate the enlargement of the dwellinghouse by 1.33m

    41 The Avenue Welwyn AL6 0PW

    Received 26 Mar 2021
  12. Decided - Granted6/2020/1634/FULL

    Replace of windows with uPVC and renewal of garden gate

    119-129 Longcroft Lane Welwyn Garden City AL8 6EL

    Received 8 Jul 2020
  13. Decided - Granted6/2021/3401/MAJ

    Installation of 3,536 solar photovoltaic (PV) array and all associated hardware on existing roof.

    Ocado Ltd Gypsy Moth Avenue Hatfield AL10 9BD

    Received 3 Dec 2021
  14. Decided - Granted6/2016/0060/HOUSE

    Installation of window to replace garage door to form garage conversion

    26 Purdom Road, Welwyn Garden City, AL7 4FH

    Received 18 Jan 2016
  15. Decided - Granted6/2016/0902/FULL

    Erection of single storey extension to existing social club building to create snooker room and extend existing kitchen

    Haldens Residents Club, Margery Wood, Welwyn Garden City, AL7 1UN

    Received 10 May 2016
  16. Decided6/2021/1892/TC

    T1 - Large Cherry - reduce by up to 30% T2 - Holly - fell T3 - Lawson Cypress - fell T4 - Holly - fell T5 - 2 x Lawson Cypress - fell T6 - 5 x Large Leyland Cypress - reduce by 30%

    17 The Valley Green Welwyn Garden City AL8 7DQ

    Received 21 Jun 2021
  17. Decided - GrantedN6/2012/2468/FP

    Replacement of wooden porch with brick porch

    29 Oaklea Welwyn AL6 0QN

    Received 21 Nov 2012
  18. Decided - GrantedN6/2007/0774/TP

    PROPOSED WORKS TO TREE UNDER TPO288.

    25 Mardley Avenue Welwyn AL6 0TU

    Received 21 May 2007
  19. Decided - Granted6/2023/0581/HOUSE

    Replacement roof to existing garage including raising the height to form a new flat roof

    1 High Oaks Road Welwyn Garden City AL8 7BJ

    Received 14 Mar 2023
  20. Decided6/2026/0154/TC

    ASCT004 – White Willow - Epicormic removal, Ivy Strip to 1.5M to aid further inspection. ASCT005 – Hazel - Remove decaying stem over the river

    7 Orchard Road Welwyn AL6 9EX

    Received 29 Jan 2026
  21. Decided - Granted6/2020/0590/HOUSE

    Erection of single storey side and part first floor rear extension

    12 Raven Court Hatfield AL10 8QN

    Received 2 Mar 2020
  22. Decided - Granted6/2019/2428/FULL

    Erection of dwelling following demolition of existing dwelling

    44 The Ridgeway Cuffley Potters Bar EN6 4BA

    Received 1 Oct 2019
  23. Decided - Granted6/2019/1662/HOUSE

    Erection of two storey rear extension

    66 Georges Wood Road, Brookmans Park, Hatfield, AL9 7BU

    Received 5 Jul 2019
  24. DecidedN6/2014/2137/TC

    Removal of hedge from front boundary

    5 Elmwood, Welwyn Garden City, AL8 6LD

    Received 17 Sept 2014

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

View all applications

Applications by postcode area

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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 Updated

  • 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 Updated

  • 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 Updated

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

More planning authorities in England

Browse all authorities