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England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
24,531Searchable applications
313Recorded as pending
86%Approval rate · 20,105 approved or refused records
2,779Refused applications

17,326 approved · 2,779 refused · 1,286 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 Oct 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2019/0893/HOUSE

    Erection of 2 x two storey gable ended front extensions, two storey side extensions and part single, part two storey gable ended rear extensions. Raising of roof to enable creation of first floor level incorporating rear dormer window and front rooflights. Insertion of first floor window to east facing elevation. Alterations to existing windows and doors.

    45 Codicote Road Welwyn AL6 9TT

    Received 12 Apr 2019
  2. Decided - Granted6/2020/3106/COND

    Submission of details pursuant to condition 2 (glazing and insulation) on planning permission 6/2017/1903/FULL

    36 Salisbury Square Hatfield AL9 5AF

    Received 23 Nov 2020
  3. Decided - Granted6/2025/0948/HOUSE

    Erection of single storey rear extension as garden room, following demolition of conservatory

    3 Grange Hill Welwyn AL6 9RH

    Received 22 May 2025
  4. Decided - Granted6/2016/1819/TPO

    Removal of evergreen tree/hedge in rear garden - Conservation Area

    14 The Valley Green, Welwyn Garden City, AL8 7DQ

    Received 26 Aug 2016
  5. Decided - Granted6/2024/0655/HOUSE

    Erection of single storey rear extension

    83 Woodhall Lane Welwyn Garden City AL7 3TH

    Received 8 Apr 2024
  6. Decided - Granted6/2022/1863/EM

    Erection of a single storey rear extension to replace existing brick shed and conservatory

    25 Dellcott Close Welwyn Garden City AL8 7BB

    Received 9 Aug 2022
  7. Decided - Refused6/2018/2283/LAWP

    Certificate of lawfulness for the erection of single storey front porch

    14 Wellington Drive Welwyn Garden City AL7 2NJ

    Received 6 Sept 2018
  8. Appeal Decided - Dismissed6/2023/1329/HOUSE

    Erection of single storey front extension and two storey rear extension. Alterations to the roof to include raising the height of the existing roof, formation of two rear dormers, rooflights within the side and front roofslopes, garage conversion and alterations to the external fenestration

    13 Bradgate Cuffley Potters Bar EN6 4RW

    Received 27 Jun 2023
  9. Decided - Granted6/2024/1913/EM

    Installation of solar panels

    6 Sheepcote Welwyn Garden City, AL7 4QD

    Received 7 Oct 2024
  10. Decided6/2021/0578/TC

    Various tree works, 100% reduction of Sycamore (A), Cherry Trees (B), Unknown (C), multiple Holly (D), multiple stemmed Cherry trees (E) and Holly Tree (F). 30% Reduction of Holly Tree (G).

    29 Colgrove Welwyn Garden City AL8 6HY

    Received 23 Feb 2021
  11. Decided - Granted6/2016/2039/EM

    Erection of fence and gates following removal of existing

    145 Oakdale, Welwyn Garden City, AL8 7QS

    Received 21 Sept 2016
  12. Decided - Granted6/2021/1741/PN8

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

    37 Rosedale Welwyn Garden City AL7 1DW

    Received 2 Jun 2021
  13. Decided - Granted6/2017/1652/LAWP

    The application is for a Certificate of lawfulness for the erection of a two storey extension with glazed staircase link to existing chocolate factory, containing staff canteen and extension and improvements to the parking area.

    61 London Road Woolmer Green Knebworth SG3 6JE

    Received 27 Jul 2017
  14. Decided - Granted6/2018/2625/EM

    Erection of garden office with pent roof following demolition of pent shed, apex shed and glass house

    59 Handside Lane Welwyn Garden City AL8 6SH

    Received 12 Oct 2018
  15. Decided - Refused6/2018/1086/MAJ

    Retention of existing ground floor retail use (A1), with the first floor converted and extended from A1 retail storage to create three storeys, comprising of 15 x 2-bedroom flats (C3) and reconfigurations to the ground floor.

    45 Town Centre, Hatfield, AL10 0JJ

    Received 26 Apr 2018
  16. Decided - Refused6/2021/0316/HOUSE

    Erection of a single storey ground floor front extension and alterations to first floor front fenestration including forming new ensuite shower.

    7 Kindersley Close Welwyn AL6 9RN

    Received 2 Feb 2021
  17. Decided - Granted6/2018/1122/HOUSE

    Erection of boundary walls, piers and metal railings - part retrospective

    14 Georges Wood Road, Brookmans Park, Hatfield, AL9 7BT

    Received 30 Apr 2018
  18. Decided - Refused6/2019/1046/LAWP

    Certificate of lawfulness for the erection of a side and rear extension

    Woodlands Coopers Lane Road Northaw Potters Bar EN6 4DJ

    Received 30 Apr 2019
  19. Decided - Granted6/2024/1957/EMT

    1 x Silver Birch to reduce by approximately 4m in height and 2m width - Tree is becoming too large for the garden. Its Dominating space & light

    31 Caponfield, Welwyn Garden City, AL7 4AW

    Received 11 Oct 2024
  20. Decided - Granted6/2020/1556/EMT

    Reduce 1x Magnolia tree (T1) by up to 1.5 m Reduce crown 1x Deodar cedar tree (T2) by 2m

    40 Applecroft Road Welwyn Garden City AL8 6LA

    Received 30 Jun 2020
  21. Decided - Granted6/2018/1106/HOUSE

    Erection of single storey rear extension. Demolition of part of the adjoining shed.

    78 Newfields Welwyn Garden City AL8 6YT

    Received 27 Apr 2018
  22. Decided6/2018/2416/TPO

    To fell Sweet Chestnut (G6) TPO643

    1A Marlborough Close Welwyn AL6 0UG

    Received 20 Sept 2018
  23. Decided - Granted6/2019/2623/HOUSE

    Erection of front porch and single storey rear extension following demolition of existing extension and garage with alterations to openings

    18 Crawford Road Hatfield AL10 0PG

    Received 18 Oct 2019
  24. Decided6/2018/0283/TPO

    1x Scots Pine Tree Covered by G6 - TPO 640 (2017). Tree requires rebalancing and 1x Cedar Tree Covered by T8 - TPO 640 (2017) requires rebalancing

    2 The Drive Welwyn AL6 0TR

    Received 23 Jan 2018

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

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

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

    Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.

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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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