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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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/2502/HOUSE

    Erection of a single storey front porch extension

    27 Stag Green Avenue Hatfield AL9 5EB

    Received 26 Aug 2021
  2. Decided6/2020/1040/TC

    Fell 3 x Leyland Cypress Trees (T1, T2, T3)

    15 Bedwell Close Welwyn Garden City AL7 3XH

    Received 11 May 2020
  3. Decided - Granted6/2024/0330/TPO

    Covered by TPO 610 (2017) G1 and by conservation area T1 - 60ft Oak to reduce by 20% - back to previous cuts T2 - 60ft Oak to reduce by 20% - back to previous cuts T3 - 25ft Robinia to remove - 90% dead and covered in ivy - weight leaning towards neighbours property with excessive decay at the base

    North Lodge High Road Essendon Hatfield AL9 6HU

    Received 20 Feb 2024
  4. Decided - Granted6/2021/1565/EMH

    Erection of first floor side extension, ground floor side extension, first floor rear extension to facilitate loft conversion, fenestration alterations and replacement of chimney

    46 Blakemere Road Welwyn Garden City AL8 7PJ

    Received 17 May 2021
  5. Decided - GrantedN6/2010/0206/TE

    30% CROWN REDUCTION OF OAK TREE LOCATED AT THE FRONT OF PROPERTY WITH REMOVAL OF DEAD BRANCHES AND CROWN LIFT TO 5/6 METERS AND 20% REDUCTION OF SECOND OAK TREE AND REMOVAL OF DEAD BRANCHES, LOCATED AT REAR OF PROPERTY

    27 WOODLAND RISE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7LJ

    Received 8 Feb 2010
  6. Decided - Withdrawn6/2017/2457/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.65m in depth, 2.92m in height and 2.4m to the eaves

    52 Thistle Grove Welwyn Garden City AL7 4AN

    Received 20 Oct 2017
  7. Decided - GrantedS6/2004/1155/FP

    ERECTION OF FIRST FLOOR SIDE AND SINGLE STOREY REAR EXTENSION

    Meadside Great North Road Hatfield AL9 6DA

    Received 28 Jul 2004
  8. Decided - GrantedW6/2008/1318/EM

    RETENTION OF REAR CONSERVATORY

    11 CORN MEAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7QR

    Received 31 Jul 2008
  9. Decided - Granted6/2021/1724/FULL

    Rear extension to replace conservatory, and a first floor extension

    4 Sutherland Way Cuffley Potters Bar EN6 4EG

    Received 1 Jun 2021
  10. Decided - Granted6/2020/0217/EM

    Prune 1 x hornbeam tree by 30%

    13 Mandeville Rise Welwyn Garden City AL8 7JT

    Received 28 Jan 2020
  11. Decided - Granted6/2021/1083/HOUSE

    Retrospective application for outbuilding and decking in rear garden

    8 Harwood Close Welwyn Garden City AL8 7SN

    Received 1 Apr 2021
  12. Decided - Refused6/2021/1994/HOUSE

    Erection of single storey rear extension (part retrospective) and addition of rendering to property

    12 Elmoor Avenue Welwyn AL6 9PA

    Received 1 Jul 2021
  13. Decided - WithdrawnW6/2014/2145/TE

    Removal of Wild Cherry tree

    54 Attimore Road, Welwyn Garden City, AL8 6LP

    Received 30 Sept 2014
  14. Decided - Granted6/2019/2849/PN8

    Prior approval for the erection of a single storey rear extension measuring 8m in depth, 3.3m in heights and 2.9m to the eaves

    Hill House Water End Lane Ayot St Peter AL6 9BB

    Received 11 Nov 2019
  15. Decided - Granted6/2026/0111/HOUSE

    Garage conversion and single storey front/side extension (to connect to existing garage), entrance canopy roof and first floor side window.

    21E Canonsfield Welwyn AL6 0QB

    Received 26 Jan 2026
  16. Decided - GrantedS6/2008/1639/FP

    ERECTION OF SINGLE STOREY REAR EXTENSION

    61 Homestead Road Hatfield AL10 0QP

    Received 21 Aug 2008
  17. Decided - Granted6/2018/1048/COND

    Submission of details pursuant to condition 1 (material samples) on planning permission 6/2016/2624/FULL, dated 14/09/2017

    Mercury House 1 Broadwater Road Welwyn Garden City AL7 3BQ

    Received 23 Apr 2018
  18. Decided - Withdrawn6/2024/0380/EM

    Erection of a single storey rear extension

    6 Parkway Gardens Welwyn Garden City AL8 6JW

    Received 27 Feb 2024
  19. Decided - GrantedW6/2014/0834/TE

    Cut back Mountain Ash tree branches and reshape crown by 20%

    22 Marsden Road, Welwyn Garden City, AL8 6XZ

    Received 9 Apr 2014
  20. Decided - Granted6/2024/0948/EMT

    1 x Indian Bean tree to remove as tree is dead

    21 Elmwood Welwyn Garden City AL8 6LD

    Received 21 May 2024
  21. Decided - Granted6/2019/3123/HOUSE

    Installation of 1x rear dormer and 2 x side rooflights to facilitate a loft conversion

    4 Akers Court Welwyn AL6 9FF

    Received 11 Dec 2019
  22. Decided - GrantedS6/2007/0426/FP

    EXTENSION TO EXISTING CLINICAL BUILDING, TO PROVIDE RESEARCH LABORATORIES AND ASSOCIATED OFFICE SPACE.

    Royal Veterinary College Hawkshead Lane North Mymms Hatfield AL9 7TA

    Received 14 Mar 2007
  23. Decided - Granted6/2019/0850/HOUSE

    Erection of a single storey rear extension and relocation of front door with glass canopy

    11 Handside Lane Welwyn Garden City AL8 6SE

    Received 9 Apr 2019
  24. Decided - Withdrawn6/2017/1038/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    5 Firway Close Welwyn AL6 0RE

    Received 15 May 2017

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

All planning guides

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    Planning application documents: what to read first

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  • Understanding planning · 13 min read

    Planning permission drawings: how to read plans

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  • 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.

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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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