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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
40,297Searchable 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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 9 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 Counts reflect the last collected status; some records may be out of date.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 - WithdrawnW6/2015/1127/TE

    Reduce two Hornbeam trees to the two uppermost branches to trim them into hedge

    1 Homestead Court Welwyn Garden City AL7 4LY

    Received 28 May 2015
  2. Decided - GrantedS6/2012/2613/DS

    Discharge of condition 26 (Travel Plan) of planning permission S6/2012/0217/MA

    Plot 4000, Hatfield Business Park, Hatfield Avenue, HATFIELD, AL10 7JD

    Received 11 Dec 2012
  3. Decided - Refused6/2020/2099/HOUSE

    Erection of detached outbuilding.

    6 Stanborough Cottages Great North Road Welwyn Garden City AL8 7TE

    Received 12 Aug 2020
  4. Decided - Granted6/2021/2273/LAWP

    Certificate of lawfulness for the erection of 2no single storey side extensions to the existing (original) dwelling house.

    2 Whitehill Welwyn AL6 9AF

    Received 29 Jul 2021
  5. Decided - GrantedW6/2009/2329/EM

    REMOVAL OF EXISTING SOIL PIPE AND REPLACE WITH A 10cm (4 ") BLACK PLASTIC SOIL PIPE

    57 VALLEY ROAD, WELWYN GARDEN CITY, HERTS, AL8 7DH

    Received 21 Oct 2009
  6. Decided - GrantedW6/2015/1257/EM

    Erection of double storey side and single storey rear extension

    27 Marsden Green Welwyn Garden City AL8 6YD

    Received 15 Jun 2015
  7. Decided6/2024/1714/TC

    1 x Apple to reduce by around 1m height and width to maintain size

    49 Blakemere Road Welwyn Garden City AL8 7PQ

    Received 6 Sept 2024
  8. Decided - SplitS6/2008/2317/TP

    REDUCTION OF STEMS BY 25% FROM HORNBEAMS (T96 & T120), REMOVAL OF ASH (T98A), REDUCTION OF HORNBEAM BY 3METRES (T139) AND REDUCTION OF CROWN FROM OAK TREE (T140) BY 2-3METRES ALL COVERED BY TPO 7

    LAND REAR OF, 63 CALDER AVENUE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7AJ

    Received 26 Nov 2008
  9. Decided - Refused6/2019/1571/HOUSE

    Erection of single rear and side, part two storey rear and side extensions

    7 Maran Avenue Welwyn AL6 9HS

    Received 26 Jun 2019
  10. Decided - GrantedS6/2004/1649/FP

    ERECTION OF A BRICK AND TILED DOUBLE GARAGE FOLLOWING DEMOLITION OF EXISTING PREFABRICATED GARAGE.

    79 Homestead Road Hatfield AL10 0QP

    Received 8 Nov 2004
  11. Decided - Granted6/2021/1799/HOUSE

    Loft conversion including creation of 3 dormers on side elevation.

    3 Meldrum Court Welwyn AL6 9FZ

    Received 10 Jun 2021
  12. Decided - WithdrawnN6/2004/0980/FP

    ERECTION OF DETACHED DWELLING ON LAND TO REAR OF 5 AND 7 OAKLEA AND ERECTION OF SINGLE STOREY SIDE EXTENSION.

    Land at 5 Oaklea Welwyn AL6 0PT

    Received 28 Jun 2004
  13. Decided - Refused6/2025/2175/PN19

    Prior approval for the erection of a general purpose agricultural building

    Thunderbridge Farm Bulls Lane Hatfield AL9 7BB

    Received 13 Oct 2025
  14. Decided - Granted6/2016/1526/EM

    Removal of Leylandii Tree

    10 High Grove, Welwyn Garden City, AL8 7DW

    Received 26 Jul 2016
  15. Decided - Granted6/2025/2315/FULL

    Erection of a single storey rear extension, relocation of separate access door to upper floors at front elevation with adjustment of shop front

    2 Station Road Cuffley Potters Bar EN6 4HT

    Received 3 Nov 2025
  16. Decided - Granted6/2023/0962/COND

    Submission of details pursuant to the discharge of condition 4 (Structural Design Report) on planning permission 6/2019/2162/OUTLINE

    Land south-west of Filbert Close Hatfield AL10 9SH

    Received 5 May 2023
  17. Decided - Granted6/2025/2577/EMT

    1 x Oak to reduce lateral branches growing over magnolia and towards neighbouring property by around 2 metres. 2 x Leyland Cypress to fell.

    45 Sherrardspark Road Welwyn Garden City AL8 7LD

    Received 15 Dec 2025
  18. Decided - GrantedS6/2013/1328/AD

    Erection of fascia sign

    Building 6, Mosquito Way, Hatfield, AL10 9BW

    Received 28 Jun 2013
  19. Decided - GrantedS6/2015/1059/LUP

    Certificate of lawfulness for proposed hip to gable alteration with installation of rear dormer window and three rooflights

    159 Crawford Road Hatfield AL10 0PB

    Received 19 May 2015
  20. Decided - Granted6/2018/0094/HOUSE

    Garage conversion to include replacement of existing garage roof.

    124 Lemsford Lane Welwyn Garden City AL8 6YP

    Received 11 Jan 2018
  21. Decided - GrantedS6/2014/1210/FP

    Erection of single storey front extension

    9 Sunnyfield, Hatfield, AL9 5DX

    Received 27 May 2014
  22. Decided - GrantedS6/2007/0777/FP

    ERECTION OF 2 STOREY SIDE EXTENSION

    152 Vincenzo Close Welham Green Hatfield AL9 7NJ

    Received 22 May 2007
  23. Decided - GrantedW6/2015/0070/EM

    Erection of greenhouse following the installation of fence following the removal of part hedge

    36 Parkway Welwyn Garden City AL8 6HQ

    Received 15 Jan 2015
  24. Decided - WithdrawnS6/2015/0408/FP

    Change of use from class B1 (Business Use) to class C3 (Dwelling) with extension and alterations to existing building to form four dwellings

    31 Salisbury Square Hatfield AL9 5JD

    Received 27 Feb 2015

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

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How to search planning applications

Guides to planning records

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    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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