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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
23,836Searchable applications
313Recorded as pending
86%Approval rate · 19,496 approved or refused records
2,714Refused applications

16,782 approved · 2,714 refused · 1,235 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2016/2014/TPO

    Fell Japanese Maple tree - Conservation Area

    21 Mandeville Rise, Welwyn Garden City, AL8 7JT

    Received 21 Sept 2016
  2. Decided - Granted6/2021/3177/LAWP

    Certificate of lawfulness for the erection of conversion of existing garage Into habitable space

    3 Wolves Mere Knebworth SG3 6JW

    Received 8 Nov 2021
  3. Decided - Granted6/2017/1837/EM

    Installation of rear bifold doors following removal of existing door and window

    19 Creswick Court Welwyn Garden City AL7 3SX

    Received 18 Aug 2017
  4. Decided - Granted6/2021/0825/HOUSE

    Part single-storey and part two-storey side and rear extension

    3 Dognell Green Welwyn Garden City AL8 7BL

    Received 15 Mar 2021
  5. Decided - Granted6/2017/2647/EM

    Erection of single storey rear extension and a rear dormer with 5 x windows to facilitate loft conversion following demolition of existing conservatory and erection of garden outbuilding.

    72 Great Ganett Welwyn Garden City AL7 3DE

    Received 13 Nov 2017
  6. Decided - Granted6/2021/2162/HOUSE

    Erection of a single storey rear and side extensions, first floor rear extension, rear basement with rooflights, and external alterations

    32 Parkway Welwyn Garden City AL8 6HQ

    Received 16 Jul 2021
  7. Decided - Granted6/2023/0844/HOUSE

    Erection of two storey side and rear extension following demolition of existing carport and outbuilding

    20 Coopers Lane Northaw Potters Bar EN6 4AG

    Received 20 Apr 2023
  8. Decided6/2026/1605/TC

    1 x Korean bee tree to re pollard back to existing pollard points

    30 Valley Road Welwyn Garden City AL8 7DN

    Received 15 Sept 2026
  9. Decided - Granted6/2018/1034/EM

    Raising of existing flat roofs by 150mm and replacement of existing roof to include insertion of roof lantern

    17 Elmwood Welwyn Garden City AL8 6LD

    Received 19 Apr 2018
  10. Decided - Withdrawn6/2019/2496/EM

    Reduce 1 x Beech tree by 10% with crown lift

    45 Elmwood Welwyn Garden City AL8 6LD

    Received 7 Oct 2019
  11. Decided - Withdrawn6/2018/1900/MAJ

    Erection of marquee and alterations to openings of Bothies building

    The Bothies and Walled Garden, North Mymms Park, North Mymms, AL9 7TR

    Received 19 Jul 2018
  12. Decided6/2019/1922/TPO

    Fell 1x Oak tree - Conservation Area

    19 Scholars Mews Welwyn Garden City AL8 7JQ

    Received 6 Aug 2019
  13. Decided - Granted6/2021/3357/HOUSE

    Erection of single storey front garage extension, conversion of garage to habitable use and alterations to front elevation.

    10 Lytton Gardens Welwyn Garden City AL8 6EG

    Received 29 Nov 2021
  14. Decided - Granted6/2017/0195/HOUSE

    Erection of single storey rear and side extension, enclosure to garage

    47 Homewood Avenue Cuffley Potters Bar EN6 4QQ

    Received 1 Feb 2017
  15. Decided - Refused6/2019/0883/LAWP

    Certificate of lawfulness for erection of single storey rear, two storey rear extension and loft conversion

    Tylers Cottage Tylers Causeway Newgate Street Hertford SG13 8QN

    Received 11 Apr 2019
  16. Decided - Withdrawn6/2018/0206/EM

    Installation of front bay window to replace current window.

    4 The Commons Welwyn Garden City AL7 4RP

    Received 23 Jan 2018
  17. Decided - Granted6/2018/1740/HOUSE

    Erection of single storey side extension to both sides and two storey rear extension

    21 The Avenue Welwyn AL6 0PW

    Received 2 Jul 2018
  18. Decided - Refused6/2022/1632/HOUSE

    Erection of single storey rear extension and enlargement of existing front facing dormer

    62 Westland Drive Brookmans Park AL9 7UQ

    Received 12 Jul 2022
  19. Appeal Decided - Dismissed6/2016/1757/FULL

    Erection of 2 no. bedroom end of terrace house and rear extension following demolition of attached garage

    189 Boundary Lane, Welwyn Garden City, AL7 4EJ

    Received 30 Aug 2016
  20. Decided - Granted6/2025/0461/HOUSE

    Erection of an outbuilding

    15 The Meadway Cuffley Potters Bar EN6 4ET

    Received 12 Mar 2025
  21. Decided - Refused6/2018/0596/COND

    Submission of details pursuant to condition 1 (brickwork samples), 2 (details of steel posts) and 3 (details of internal construction works) on planning permission 6/2017/2406/LB

    Ayot Cottage Hill Farm Lane Welwyn AL6 9BT

    Received 2 Mar 2018
  22. Decided - Granted6/2019/1748/COND

    Submission of details pursuant to condition 11 (Contamination Assessment) on planning permission 6/2017/2107/FULL

    37 Church Street Welwyn AL6 9LS

    Received 15 Jul 2019
  23. Decided - Refused6/2024/1829/VAR

    Removal of condition 4 (permitted development rights) on planning application N6/1987/0421/FP

    4 Whetstone Court Whetstone Close Welwyn AL6 0QY

    Received 24 Sept 2024
  24. Decided - Granted6/2020/0785/COND

    Submission of details pursuant to condition 2 (surface water drainage scheme) on planning permission 6/2019/0085/MAJ, dated 29/11/2019

    Chancellors School, Pine Grove, Brookmans Park, Hatfield, AL9 7BN

    Received 26 Mar 2020

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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