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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
40,251Searchable applications
321Recorded as pending
86%Approval rate · 33,747 approved or refused records
4,812Refused applications

28,935 approved · 4,812 refused · 2,213 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 6 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedW6/2014/1858/EM

    Erection of Single storey rear extension and door replaced with window in front elevation

    158 Blythway, Welwyn Garden City, AL7 1DU

    Received 19 Aug 2014
  2. Decided - GrantedW6/2015/1355/EM

    Erection of single storey rear, first floor rear and part side extensions

    6 Brockett Close Welwyn Garden City AL8 7BN

    Received 23 Jun 2015
  3. Decided - Granted6/2024/2441/TPO

    T1 Mature Oak, reduce vertical and lateral growth by 2-3 M approx back to most recent previous pruning points, thin by 10% and remove deadwood. TPO 557 (2016).

    123 Moffats Lane Brookmans Park AL9 7RP

    Received 30 Dec 2024
  4. Decided - GrantedN6/2015/1288/FP

    Erection of single storey rear extension

    139 Boundary Lane, Welwyn Garden City, AL7 4EQ

    Received 16 Jun 2015
  5. Decided - Granted6/2021/2912/PN8

    Prior approval for a single storey rear extension with materials to match existing measuring 4m in depth, 3m in height and 3m to the eaves

    473 Howlands Welwyn Garden City AL7 4HP

    Received 11 Oct 2021
  6. Decided6/2021/0861/TC

    Fell 1 x Leyland Cypress

    8 Graysfield Welwyn Garden City AL7 4BL

    Received 17 Mar 2021
  7. Decided - Granted6/2019/2120/EM

    Erection of porch, two storey rear extension, removal of chimney, installation of pitch roof to existing side extension, and alterations to openings, formation of patio and drive layout

    3 High Grove Welwyn Garden City AL8 7DW

    Received 27 Aug 2019
  8. Decided - Granted6/2021/1099/HOUSE

    Replacement garage

    35 Mardley Hill Welwyn AL6 0TT

    Received 6 Apr 2021
  9. Decided - Granted6/2017/1240/EM

    Erection of single storey rear extension following demolition of existing conservatory

    13 Digswell Road Welwyn Garden City AL8 7PD

    Received 6 Jun 2017
  10. Decided - RefusedN6/2012/2598/DT

    Installation of dark green cabinet

    Land at Valley Road Welwyn Garden City AL8 7DP

    Received 12 Dec 2012
  11. Decided - Granted6/2022/2640/EM

    Erection of a part single, part double storey rear extension including the installation of solar panels, single storey side extension and increase of existing hardstanding to the drive to allow for one additional car parking space

    25 Coneydale Welwyn Garden City AL8 7RX

    Received 21 Nov 2022
  12. Decided - Split6/2017/2397/COND

    Confirmation that conditions have been complied with S6/1999/1064/OP - 29/12/2000

    129-133 Cunningham Avenue Hatfield AL10 9JZ

    Received 18 Oct 2017
  13. Decided - Granted6/2022/1807/TPO

    T1 - Oak tree - reduce the crown of the oak tree by up to 30% for general maintenance and to address growth restricting visibilty of church clock T2 - Cherry tree - fell to ground level as the tree is dead

    St Marys Church Church Street Welwyn AL6 9LX

    Received 2 Aug 2022
  14. Decided - Refused6/2019/2668/HOUSE

    Erection of first floor side extension with installation of 3 x roof lights

    20 Mulberry Mead Hatfield AL10 9EN

    Received 23 Oct 2019
  15. Decided - Granted6/2021/1879/EM

    Erection of a double storey rear infill extension, and single storey side extension with link corridor to replace existing outbuilding

    7 Handside Close Welwyn Garden City AL8 6SR

    Received 18 Jun 2021
  16. Decided - GrantedN6/2015/0399/FP

    Erection of two storey and single storey side and rear extensions

    3 Hollybush Close Welwyn AL6 0PZ

    Received 27 Feb 2015
  17. Decided - Granted6/2022/2666/HOUSE

    Erection of single storey side and rear extension following demolition of conservatory

    28 Pooleys Lane Welham Green Hatfield Hertfordshire AL9 7LH

    Received 23 Nov 2022
  18. Decided6/2026/0444/TC

    Remove T1 POPLAR and T3 PRUNUS

    35 Attimore Road Welwyn Garden City Hertfordshire AL8 6LQ

    Received 11 Mar 2026
  19. Decided - Granted6/2024/0876/EMT

    T1 - Ash tree - fell to ground level. Re plant a smaller ornamental tree in its place

    41 Hyde Way Welwyn Garden City AL7 3AE

    Received 9 May 2024
  20. Decided - Granted6/2024/1397/HOUSE

    Erection of a new garage and shed to replace the existing garage and shed

    36 Kingsmead Cuffley Potters Bar EN6 4AN

    Received 22 Jul 2024
  21. Decided - GrantedC6/1987/0798/FP

    Two storey rear extension

    5 Guessens Walk, Welwyn Garden City, AL8 6QS

    Received 1 Jan 1987
  22. Decided - GrantedN6/2009/0061/FP

    ERECTION OF REAR CONSERVATORY

    76 HOWICKS GREEN, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4RH

    Received 15 Jan 2009
  23. Decided - Granted6/2020/2025/EMT

    Reduce crown of 1x Scots Pine by around 1.5m height & width

    23 Russellcroft Road Welwyn Garden City AL8 6QX

    Received 12 Aug 2020
  24. Decided - Granted6/2016/0731/TPO

    Crown reduce hornbeam tree by 30%

    11 Oak Piece Welwyn AL6 0XE

    Received 29 Mar 2016

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

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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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