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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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/0430/FULL

    Installation of external fire escape, 1 x canopy and air conditioning units on the rooftop

    35-37 Howardsgate Welwyn Garden City AL8 6AP

    Received 11 Feb 2021
  2. Decided - Refused6/2021/2818/PN8

    Prior approval to demolish the existing extension and erection of a single storey rear extension measuring 6m in depth, 3m in height and 2.7m to the eaves.

    86 Salisbury Road Welwyn Garden City AL7 3SB

    Received 30 Sept 2021
  3. Decided - Granted6/2017/1999/HOUSE

    Erection of single storey rear extension

    The Bellbrook Bulls Lane Hatfield AL9 7AZ

    Received 5 Sept 2017
  4. Decided - Granted6/2017/2728/HOUSE

    Erection of single storey rear extension, new rear terrace patio and front hardstanding

    223 Knightsfield Welwyn Garden City AL8 7QL

    Received 23 Nov 2017
  5. Decided - Granted6/2015/1769/EM

    DD App – Crown reduce by up to 50% and crown lift to 2m to an acacia tree.

    20 Walden Road Welwyn Garden City AL8 7PF

    Received 19 Aug 2015
  6. Decided - Withdrawn6/2026/0656/FULL

    Conversion of existing tennis courts to 4 uncovered padel courts with erection of ancillary container

    De Havilland Campus Hertfordshire Sports Village Mosquito Way Hatfield AL10 9EU

    Received 14 Apr 2026
  7. Appeal Decided - DismissedN6/2009/0262/FP

    ERECTION OF FRONT PORCH, TWO STOREY SIDE EXTENSION, FIRST FLOOR REAR EXTENSION AND PITCHED ROOF EXTENSION TO PART EXISTING/PART APPROVED REAR EXTENSION

    4 DEWERS CLOSE, WELWYN, HERTFORDSHIRE, AL6 9RR

    Received 5 Feb 2009
  8. Decided - Granted6/2016/0874/EM

    Erection of single storey rear extension with loft conversion to include velux windows plus insertion of driveway

    4 Stanborough Green, Welwyn Garden City, AL8 6XG

    Received 29 Apr 2016
  9. Decided - Granted6/2017/1527/EM

    Erection of a single storey rear extension

    69 Great Dell Welwyn Garden City AL8 7HP

    Received 13 Jul 2017
  10. Decided - Granted6/2021/0548/EMT

    Fell Ash Tree

    37 Barleycroft Road Welwyn Garden City AL8 6JX

    Received 19 Feb 2021
  11. Decided - Granted6/2023/0343/FULL

    Installation of modular building (portacabin) with access ramp for use as mailroom (for wider Tesco campus), including removal of 28 car parking spaces to accommodate building and service area.

    Tesco Checkout Kestrel Way Welwyn Garden City AL7 1GA

    Received 13 Feb 2023
  12. Decided - Granted6/2016/1196/EM

    Crown reduction of lombardy poplar tree by 30%

    29 Springfields, Welwyn Garden City, AL8 6XS

    Received 9 Jun 2016
  13. Decided - Granted6/2021/1023/HOUSE

    Erection of a single storey rear and side extension following demolition of existing conservatory and outbuilding, and insertion of new side access door to main dwelling.

    57 Monkswood Welwyn Garden City AL8 7EF

    Received 29 Mar 2021
  14. Decided - Granted6/2018/0390/EM

    Reduce 2 x Leyland Cypress trees by 2m height and trim

    40 Fordwich Road Welwyn Garden City AL8 6EY

    Received 7 Feb 2018
  15. Decided - Granted6/2015/1728/HOUSE

    Erection of single storey rear conservatory

    3 Mitchell Close Welwyn Garden City AL7 2NH

    Received 13 Aug 2015
  16. Decided - GrantedS6/2013/0435/MA

    Erection of new science building, associated works and new service road

    University of Hertfordshire, College Lane, HATFIELD, AL10 9AB

    Received 5 Mar 2013
  17. Decided - Split6/2017/2805/COND

    Submission of details pursuant to condition 1 (details of first floor rear window) and 2 (colour of frames and glazing bars) on listed building consent 6/2017/2100/LB

    8 Mill Lane Welwyn AL6 9ET

    Received 30 Nov 2017
  18. Decided6/2018/0117/TPO

    Crown reduce 1 x Mature Pine tree by 30-40% and crown reduce 2 x Eucalyptus trees by 30%

    32 High Oaks Road Welwyn Garden City AL8 7BH

    Received 12 Jan 2018
  19. Appeal Decided - Dismissed6/2024/0437/HOUSE

    Erection of a two storey rear and side extension. Installation of new front windows. Relocation of entrance door to new extension.

    125 Dawley Welwyn Garden City AL7 1EB

    Received 6 Mar 2024
  20. Decided - Granted6/2015/1801/HOUSE

    Loft conversion to incorporate rear dormer and hip to gable main roof

    54 Peplins Way Brookmans Park Hatfield AL9 7UU

    Received 24 Aug 2015
  21. Decided - Granted6/2018/1667/COND

    Submission of details pursuant to condition 6 (surface water drainage scheme) on planning permission 6/2017/1194/MAJ

    98-102 Great North Road Hatfield AL9 5DB

    Received 22 Jun 2018
  22. Decided - Granted6/2015/2353/HOUSE

    Conversion of loft and installation of 3no roof lights to form habitable space

    18 Lavender Close Hatfield AL10 9FW

    Received 19 Nov 2015
  23. Decided - Granted6/2019/2116/HOUSE

    Installation of an external 125mm black flue to the south wall elevation

    11 The Green Welwyn AL6 9EA

    Received 27 Aug 2019
  24. Decided - GrantedN6/2004/0306/FP

    ERECTION OF REAR CONSERVATORY

    32 Beehive Lane Welwyn Garden City AL7 4BQ

    Received 3 Mar 2004

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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    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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