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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
30,036Searchable applications
307Recorded as pending
87%Approval rate · 24,966 approved or refused records
3,307Refused applications

21,659 approved · 3,307 refused · 1,597 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 18 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedN6/2015/0714/DS

    Approval of details reserved by condition 3 (materials) on planning permission N6/2014/2633/LB

    5 Ayot House, Hill Farm Lane, Ayot St Lawrence, Welwyn, AL6 9BP

    Received 25 Mar 2015
  2. Decided - GrantedN6/2014/0396/FP

    Replacement of existing boundary fence to Black Fan Road

    3 Holwell Hyde, Welwyn Garden City, AL7 3DJ

    Received 24 Feb 2014
  3. Decided - Granted6/2017/2000/TPO

    Reduce overhang of Beech tree (G1 No. 9) and Oak tree (G1 No. 3) by one third - Covered by TPO 55 (1980)

    13 Bracken Lane Welwyn AL6 0RB

    Received 5 Sept 2017
  4. Decided - Granted6/2019/2957/EM

    Reduce 1x tree (TPO 733) (T4) by 2m

    38 Reddings Welwyn Garden City AL8 7LA

    Received 26 Nov 2019
  5. Decided - Granted6/2019/0359/EM

    Retention of garden room

    81 Howlands Welwyn Garden City AL7 4RA

    Received 12 Feb 2019
  6. Decided - Granted6/2022/0369/HOUSE

    Erection of single storey rear extension, conversion of existing garage, fenestration alterations and the installation of 2 dormer windows to the rear to facilitate a loft conversion.

    18 Longcroft Lane Welwyn Garden City Hertfordshire AL8 6EA

    Received 16 Feb 2022
  7. Decided - Granted6/2023/1322/COND

    Submission of details pursuant to condition 1 (Windows and Doors ) on planning permission 6/2022/1651/LB

    Northaw House Coopers Lane Northaw Potters Bar EN6 4NG

    Received 26 Jun 2023
  8. Decided - Granted6/2020/2942/LB

    The erection of a pergola 3m x 3m with festoon lighting to the rear patio area.

    The Rose And Crown 14 Church Street Welwyn AL6 9LX

    Received 10 Nov 2020
  9. Decided - Granted6/2021/0709/EM

    Remove and replace roof covering with like-for-like materials

    2 Guessens Road Welwyn Garden City AL8 6QR

    Received 2 Mar 2021
  10. Decided - Refused6/2018/0364/FULL

    Conversion of roof space to provide 3 x one bed studio flats and erection of a first floor rear extension to provide 1 x one bed studio and 1 x two bed flat including alterations to openings

    179 Handside Lane Welwyn Garden City AL8 6TA

    Received 5 Feb 2018
  11. Decided - GrantedN6/2014/0637/FP

    Erection of rear conservatory

    6 Dowley Wood, Welwyn Garden City, AL7 1FL

    Received 28 Mar 2014
  12. Decided - GrantedN6/2015/0899/OR

    Prior approval for the change of use from B1(a) offices to 2no studio apartments and 4no one bedroom flat (C3)

    York House, 4 Wigmores South, Welwyn Garden City, AL8 6PL

    Received 29 Apr 2015
  13. Decided - Granted6/2023/0157/COND

    Submission of details pursuant to condition 1 (scheme for extraction and filtration of cooking and other fumes including information on odour control and systems) and condition 2 (extraction system and noise survey) on planning permission 6/2021/3087/FULL

    1 Church Street Welwyn AL6 9LL

    Received 23 Jan 2023
  14. Decided - Granted6/2025/0109/EM

    Erection of first floor rear extension, internal alterations and removal of plum tree

    7 Handside Green Welwyn Garden City AL8 6SQ

    Received 22 Jan 2025
  15. Decided - Granted6/2021/2144/HOUSE

    Erection of single storey side storage unit with flue

    51 Oakdale Welwyn Garden City AL8 7QP

    Received 15 Jul 2021
  16. Decided - GrantedS6/2014/0470/FP

    Erection of two storey side and rear extension, single storey side extension and canopy roof to front elevation

    31 Homewood Avenue, Cuffley, Potters Bar, EN6 4QQ

    Received 5 Mar 2014
  17. Decided - Granted6/2026/1011/HOUSE

    Erection of rear extension, single storey side extension, new porch, additions/alterations to windows on side elevation and demolition of garage

    5 Brookside Crescent Cuffley Potters Bar EN6 4QW

    Received 9 Jun 2026
  18. Decided - Withdrawn6/2017/2734/HOUSE

    Erection of single storey front and side extension and new dormer windows to the rear replacing existing

    7 The Holdings Hatfield AL9 5HH

    Received 23 Nov 2017
  19. DecidedS6/2014/2289/TN

    Proposed base station installation

    Hatfield Avenue, Hatfield, AL10 9TW

    Received 17 Oct 2014
  20. Decided - Refused6/2020/2760/EMT

    Fell one Birch Tree

    49 Marsden Road Welwyn Garden City AL8 6YQ

    Received 22 Oct 2020
  21. Decided6/2026/0095/TC

    TG1 Ash group to fell all ash trees.

    30 Longcroft Gardens Welwyn Garden City AL8 6JR

    Received 22 Jan 2026
  22. Decided - Refused6/2022/1078/COND

    Submission of details pursuant of Condition 1 (Construction/Repair Method Statement), Condition 2 (Window and Door Details) and Condition 3 (Materials) on planning permission 6/2020/0930/VAR

    Northaw House Coopers Lane Northaw Potters Bar EN6 4NG

    Received 9 May 2022
  23. Decided - GrantedN6/2014/1029/TC

    Removal of Three Lawson Cypress trees

    19 Russellcroft Road, Welwyn Garden City, AL8 6QX

    Received 15 May 2014
  24. Decided - Granted6/2023/1823/EM

    Erection of 6 ft timber double gates for private access, installation of 6ft timber panel fencing to replace existing chain link fencing and installtioan of 6m x 1.5m hardstanding for bin storage

    104 - 118 Thistle Grove Welwyn Garden City AL7 4AQ

    Received 1 Sept 2023

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

  • Understanding planning · 13 min read

    Planning application documents: what to read first

    Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.

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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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