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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
33,283Searchable applications
313Recorded as pending
87%Approval rate · 27,863 approved or refused records
3,639Refused applications

24,224 approved · 3,639 refused · 1,745 withdrawn. Received dates in our records: 29 Apr 1948 to 14 Oct 2026. Most recent record check: 21 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2015/1644/HOUSE

    Installation of a first floor dormer with french doors and bi-fold doors to ground floor replacing existing sliding doors

    11 Mandeville Rise, Welwyn Garden City, AL8 7JT

    Received 4 Aug 2015
  2. Decided - Granted6/2016/0543/COND

    Approval of details reserved by condition 16 (external works levels) on outline planning application N6/2011/359/OP

    Queen Elizabeth II Hospital, Howlands, Welwyn Garden City, AL7 4HQ

    Received 31 Mar 2016
  3. Decided - Granted6/2021/1656/HOUSE

    Erection of a single storey rear extension

    77 Gresley Close Welwyn Garden City AL8 7QA

    Received 24 May 2021
  4. Decided - Granted6/2020/1577/HOUSE

    Erection of front porch extension, with installation of new front door and side windows

    35 Gresley Close Welwyn Garden City AL8 7QA

    Received 2 Jul 2020
  5. Decided - GrantedS6/2009/2354/FP

    ERECTION OF FIRST FLOOR REAR EXTENSION

    10 WILKINS GREEN LANE, HATFIELD, HERTFORDSHIRE, AL10 9RT

    Received 23 Oct 2009
  6. Appeal Decided - Allowed6/2016/1426/FULL

    Erection of storage barn

    Howe Wood Farm, White Stubbs Lane, Bayford, Hertford, SG13 8QA

    Received 8 Jul 2016
  7. Decided - Granted6/2026/0332/EMT

    Crown reduce 1 x Oak back to previous points, removing approx. 3m of regrowth. Repollard 1 x Horse Chestnut back to previous points, removing approx. 3m of regrowth

    1 Applecroft Road Welwyn Garden City AL8 6JZ

    Received 23 Feb 2026
  8. Decided - Granted6/2017/0237/COND

    Approval of details reserved by condition 5d (verification plan for longer-term monitoring of pollutant linkages, maintenance and arrangements for contingency action) on planning permission S6/2012/1181/MA

    University Of Hertfordshire College Lane Hatfield AL10 9AB

    Received 9 Feb 2017
  9. Decided - Granted6/2018/2735/HOUSE

    Erection of brick garage following demolition of existing timber shed

    41 Applecroft Road Welwyn Garden City AL8 6LA

    Received 22 Oct 2018
  10. Decided - GrantedS6/2014/2156/TP

    Crown reduce oak tree to previous pruning points covered by TPO 315

    1 Holme Road Hatfield AL10 9LH

    Received 30 Sept 2014
  11. Decided - Granted6/2018/2306/FULL

    Change of use of part of the ATS service yard and siting of off-site manufactured portable building to use for car servicing operation.

    ATS Euromaster Ltd 17 Tewin Road Welwyn Garden City AL7 1BD

    Received 7 Sept 2018
  12. Decided - Granted6/2024/0810/COND

    Submission of details pursuant to condition number 1 (crown roof) and 2 (materials), on planning permission 6/2023/0622/FULL

    4 Brookmans Avenue Brookmans Park AL9 7QJ

    Received 30 Apr 2024
  13. Decided6/2021/1672/TC

    Removal of 1 x Bay tree, 1 x Cherry/Plum tree and 1 x Cherry tree covered by conservation area

    5 Scotts View Welwyn Garden City AL8 6HF

    Received 25 May 2021
  14. Decided - Granted6/2016/0297/COND

    Approval of details reserved by conditions 3 (landscaping), condition 4 (materials) and condition 5 (surface material of the parking spaces) and condition 6 (parking area) on planning permission S6/2014/1448/FP

    36 Pine Grove, Brookmans Park, Hatfield, AL9 7BS

    Received 22 Feb 2016
  15. Under Consideration6/2026/1449/COND

    Submission of details pursuant to Condition 4 (landscaping) on planning permission 6/2023/0622/FULL

    4 Brookmans Avenue Brookmans Park AL9 7QJ

    Received 18 Aug 2026
  16. Decided - Granted6/2018/2994/VAR

    Variation of condition 20 (approved plans) on planning permission 6/2017/0550/MAJ

    Plot 6000, Land Adjacent to the Porsche Garage, Hatfield House, Hatfield Business Park, Hatfield, AL10 9UA

    Received 22 Nov 2018
  17. Decided - Refused6/2019/0655/LAWP

    Certificate of lawfulness of the installation of dormer to facilitate loft extension

    38 The Sidings Hatfield AL10 9SR

    Received 19 Mar 2019
  18. Decided - GrantedN6/2009/2468/TC

    REDUCE GINKO BILBOA TREE IN FRONT GARDEN BY 33% AND REDUCE LIME TREE CROWN BY 20% LOCATED IN REAR GARDEN

    55 VALLEY ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7DH

    Received 18 Nov 2009
  19. Decided - Granted6/2022/1000/HOUSE

    Erection of first floor rear extension. Reduction in existing first floor rear window and insertion of first floor side window

    2 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 27 Apr 2022
  20. Decided6/2023/2124/TC

    1 x Lawson Cypress to fell to ground level - tree has grown too large for location

    48 Brockswood Lane Welwyn Garden City AL8 7BG

    Received 19 Oct 2023
  21. Decided - Granted6/2019/0654/VAR

    Variation of conditions 4 (Cross-Sections of the site and adjoining land,Existing levels around the building) and 5 (Landscaping Plan) on planning permission N6/2014/2673/FP

    Old City Garden Nursery Harmer Green Lane Digswell Welwyn AL6 0EP

    Received 19 Mar 2019
  22. Decided - GrantedN6/2009/1630/FP

    PROPOSED SAFETY RAIL WITH LADDER ACCESS

    H S B C, HOWARDSGATE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6BH

    Received 30 Jul 2009
  23. Decided - Refused6/2015/2570/TPO

    Reduce height of Oak tree by up to 4m

    Land at boundary of 99 and 101 Attimore Road, Welwyn Garden City, AL8 6LG

    Received 30 Dec 2015
  24. Decided - GrantedN6/2014/2408/TP

    Raise Walnut tree to 2m covered by TPO 332

    Attimore Hall, Ridgeway, Welwyn Garden City, AL7 2AD

    Received 3 Nov 2014

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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