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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
40,247Searchable applications
321Recorded as pending
86%Approval rate · 33,743 approved or refused records
4,812Refused applications

28,931 approved · 4,812 refused · 2,213 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/3442/HOUSE

    Erection of single storey rear extension (part retrospective)

    50 Great Ley Welwyn Garden City AL7 4TL

    Received 8 Dec 2021
  2. Decided - Granted6/2016/2179/FULL

    Erection of a new dwelling following demolition of existing house

    15 Bacons Drive Cuffley Potters Bar EN6 4DX

    Received 17 Oct 2016
  3. Decided - Withdrawn6/2017/1577/TPO

    T1 - Poplar tree to be felled

    71 Sweet Briar Welwyn Garden City AL7 3EB

    Received 20 Jul 2017
  4. Decided - Granted6/2022/2206/HOUSE

    Erection of a porch to the front elevation.

    2 Deerswood Avenue Hatfield Hertfordshire AL10 8RX

    Received 23 Sept 2022
  5. Decided - Granted6/2022/1486/EM

    Replacement and extention of original concrete driveway with block paving and works to improve existing front garden.

    49 Marsden Road Welwyn Garden City AL8 6YQ

    Received 27 Jun 2022
  6. Decided - GrantedN6/2013/0359/NM

    Non material amendment following approval of planning permission N6/2012/0692/FP - Reduce the building line of the side single storey extension

    6 Fordwich Road Welwyn Garden City AL8 6EY

    Received 21 Feb 2013
  7. Decided - Refused6/2018/1004/HOUSE

    Erection of a two storey side extension following demolition of previous side and rear extensions

    19 The Avenue Welwyn AL6 0PW

    Received 17 Apr 2018
  8. Decided6/2019/0050/TPO

    Reduce 1 x Prunus (flowering cherry) tree by 25% and thin selectively by removing larger up rights - conservation area

    6 Handside Green Welwyn Garden City AL8 6SQ

    Received 9 Jan 2019
  9. Decided - Granted6/2016/0497/EM

    Loft conversion with two rooflights to the rear elevation and one window to the gable end

    6 Colgrove, Welwyn Garden City, AL8 6HU

    Received 22 Mar 2016
  10. Decided - Granted6/2022/0745/HOUSE

    Erection of single storey front and rear extensions

    40 Birchall Wood Welwyn Garden City Hertfordshire AL7 2HL

    Received 28 Mar 2022
  11. Decided - Granted6/2022/1770/HOUSE

    Erection of two storey front extension with canopy roof and dormer window. Single storey rear extension

    37 Kingsley Court Welwyn Garden City AL7 4HZ

    Received 27 Jul 2022
  12. Decided - Refused6/2022/0714/HOUSE

    Erection of a two storey side extension, first floor rear extension, front porch/canopy infill extension with tiled pitched roof to front canopy.

    23 Stag Green Avenue Hatfield Hertfordshire AL9 5EB

    Received 25 Mar 2022
  13. Decided - WithdrawnN6/2014/1480/LB

    Removal of existing gravel surface to access road/parking areas and replacement with permeable block paving system

    Lemsford Mill, Lemsford Village, Welwyn Garden City, AL8 7TR

    Received 30 Jun 2014
  14. Decided - Granted6/2023/0754/HOUSE

    Erection of additional storey with single storey front garage extension and two storey front extension

    35 The Ridgeway Cuffley Potters Bar EN6 4BB

    Received 5 Apr 2023
  15. Decided - GrantedN6/2006/0109/FP

    ERECTION OF REPLACEMENT STABLES

    LAND AT, DIGSWELL PLACE, WELWYN GARDEN CITY, HERTFORDSHIRE

    Received 24 Jan 2006
  16. Decided - Granted6/2015/1831/TPO

    Prune Oak tree crown by 25% but plus re-balancing of the crown to re-distribute the weight and re-shape covered by TPO 108

    19 Mardley Wood Welwyn AL6 0UY

    Received 28 Aug 2015
  17. Decided - SplitS6/2014/2720/DS

    Approval of details reserved by condition 3 (samples of materials) of planning permission S6/2014/1181/FP

    17 Mymms Drive, Brookmans Park, Hatfield, AL9 7AE

    Received 19 Dec 2014
  18. Decided - Granted6/2025/1455/EM

    Replacement of existing Delta, interlocking concrete roof tile with Stonewold concrete interlocking roof tile, Grey, through colour, smooth finish. Install dry ridge system and segmented dry verge system, colour to match new tiles

    Council owned houses in Lumbards, Rowans, Eastor, Swanhill, Flexley Wood, Crookhams

    Received 7 Jul 2025
  19. Decided - Withdrawn6/2017/1238/HOUSE

    Erection of two storey side extension and single storey rear extension

    33 Elmwood Welwyn Garden City AL8 6LD

    Received 7 Jun 2017
  20. Decided - Granted6/2019/2491/TPO

    Crown thin 1x Oak tree (T1) by 30%

    14 Roundwood Drive Welwyn Garden City AL8 7JZ

    Received 7 Oct 2019
  21. Decided - Granted6/2022/1214/HOUSE

    Single storey rear extension and conversion of garage to habitable accommodation

    22 Skimpans Close Welham Green Hatfield AL9 7PB

    Received 25 May 2022
  22. Decided - Refused6/2019/2519/LAWP

    Certificate of lawfulness for the erection of outbuilding

    18A London Road Woolmer Green Knebworth SG3 6JP

    Received 9 Oct 2019
  23. Decided - Granted6/2020/1991/PN8

    Prior approval for the erection of a single storey rear extension measuring 5m in depth, 3m in height and 3m to the eaves.

    86 Thistle Grove Welwyn Garden City AL7 4AQ

    Received 4 Aug 2020
  24. Decided - GrantedS6/2005/1473/TP

    WORKS TO OAK TREE T1 COVERED BY TPO 270

    43 Wellfield Road Hatfield AL10 0BY

    Received 1 Dec 2005

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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