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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
18,403Searchable applications
298Recorded as pending
86%Approval rate · 14,830 approved or refused records
2,050Refused applications

12,780 approved · 2,050 refused · 931 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 11 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2024/1729/COND

    Submission of details pursuant of conditions 2 (Surface Water Drainage Scheme) on planning permission 6/2020/3418/MAJ

    Sandyhurst 1 Welwyn By Pass Road Welwyn AL6 9HT

    Received 9 Sept 2024
  2. Decided - Granted6/2023/2116/PN27

    Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 9.65m in height

    35 Codicote Road Welwyn AL6 9TT

    Received 18 Oct 2023
  3. Decided6/2019/2640/TC

    Fell 1 x Horse Chestnut tree

    2 Turmore Dale Welwyn Garden City AL8 6HS

    Received 21 Oct 2019
  4. Decided - Granted6/2024/1332/HOUSE

    Erection of a double timber frame garage with room above

    9 Codicote Road Welwyn AL6 9ND

    Received 11 Jul 2024
  5. Decided - Granted6/2025/2535/PN8

    Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 2.84m in height and 2.54m to the eaves

    101 Hillyfields Welwyn Garden City AL7 2EA

    Received 8 Dec 2025
  6. Decided - Refused6/2021/2020/HOUSE

    Erection of a single storey front extension

    32 Hare Lane Hatfield AL10 8PP

    Received 2 Jul 2021
  7. Decided - Granted6/2024/0924/EMT

    T2 Elm (dead) to fell.

    73 Sweet Briar Welwyn Garden City AL7 3EB

    Received 17 May 2024
  8. Decided - Granted6/2021/2010/COND

    Submission of details pursuant to condition number 1 (gate design details) on planning permission 6/2018/3123/HOUSE

    55 Homewood Avenue Cuffley Potters Bar EN6 4QQ

    Received 2 Jul 2021
  9. Decided - Granted6/2018/2184/EM

    Crown Thin 1 x Oak tree (T1) by 25% including removal any dead wood.

    1 Ashley Close Welwyn Garden City AL8 7LH

    Received 21 Aug 2018
  10. Decided - Granted6/2026/0240/EM

    Erection of timber orangery to following demolition of existing conservatory

    5 Guessens Walk Welwyn Garden City AL8 6QS

    Received 11 Feb 2026
  11. Decided - Granted6/2023/1566/EM

    Change the old PVC windows for new PVC windows with the style and size being exactly the same. Change the current old PVC front door for a new composite door

    65 Howlands Welwyn Garden City AL7 4RA

    Received 28 Jul 2023
  12. Decided - Granted6/2021/2794/EM

    Partial conversion of garage to habitable use and alterations to fenestrations

    45 Sherrardspark Road Welwyn Garden City AL8 7LD

    Received 28 Sept 2021
  13. Appeal Decided - Dismissed6/2020/0547/HOUSE

    Installation of rear dormer facilitate loft conversion

    16 Robbery Bottom Lane Welwyn AL6 0UW

    Received 26 Feb 2020
  14. Decided - Granted6/2026/1074/HOUSE

    Erection of a single storey side and rear extension following demolition of existing outbuilding

    10 Pinewood Welwyn Garden City AL7 3TL

    Received 22 Jun 2026
  15. Decided - Granted6/2021/2641/LAWP

    Lawful development certficate for erection of outbuilding

    19 Carbone Hill Northaw Potters Bar EN6 4PJ

    Received 9 Sept 2021
  16. Decided - Granted6/2025/0230/EMT

    T1 Yew - 20% crown reduction to reduce to previous reduction points and sever ivy at base. T24 Yew - Dead, to fell. T23 Yew - clear from building by pruning to create a 1m clearance. T7 Yew - 30% crown reduction to rebalance following damage caused by adjacent storm damaged tree

    16 Beehive Green Welwyn Garden City AL7 4BE

    Received 10 Feb 2025
  17. Decided - Granted6/2024/0809/LAWP

    Certificate of lawfulness for additions and alterations to roof comprising a hip to gable conversion, rear dormer, replacement of hipped rear projection with flat roof, and installation of window to side elevation

    36 Kingsmead Cuffley Potters Bar EN6 4AN

    Received 30 Apr 2024
  18. Decided - Granted6/2019/0291/HOUSE

    Erection of single storey rear extension with alterations to openings

    38 Coltsfoot Welwyn Garden City AL7 3HZ

    Received 8 Feb 2019
  19. Decided - Granted6/2019/3142/FULL

    Erection of temporary classroom

    Essendon Church Of England Primary School School Lane Essendon Hatfield AL9 6HD

    Received 12 Dec 2019
  20. Decided - Granted6/2025/2323/TPO

    T1 Pedunculate oak Prune to Clear structure/wires by specified amount. Prune lowest lateral limbs to clear mast cables from approximately 4m up to height of approximately 8m From ground level. T9 Common ash Fell to Ground Level, (Directional Fell) Dead tree - stack cuttings on site

    Brookmans Park Teleport, Arqiva Great North Road Brookmans Park AL9 6NE

    Received 3 Nov 2025
  21. Decided - Granted6/2024/1000/EMT

    T1 Hornbeam - Reduce crown by 3 metres in height and 2 metres in spread. T2 Hornbeam - Reduce crown by 3 metres in height and 2 metres in spread. T3 Hornbeam - Reduce crown by 3 metres in height and 2 metres in spread

    81 Handside Lane, Welwyn Garden City, AL8 6SH

    Received 29 May 2024
  22. Under Consideration6/2026/1303/HOUSE

    Erection of a single storey side extension, part single and part two storey rear extension, with alterations to openings on side elevations and new patio area

    9 Youngs Rise Welwyn Garden City AL8 6RT

    Received 24 Jul 2026
  23. Decided - Granted6/2021/0123/EM

    Erection of a two storey side and part two storey, part single storey rear extension.

    49 Attimore Road Welwyn Garden City AL8 6LG

    Received 15 Jan 2021
  24. Decided - Granted6/2024/2087/EM

    Garage door replacements

    1 Great Break Welwyn Garden City AL7 3EZ

    Received 25 Oct 2024

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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    Published Updated

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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