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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
23,138Searchable applications
313Recorded as pending
86%Approval rate · 18,864 approved or refused records
2,646Refused applications

16,218 approved · 2,646 refused · 1,195 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2018/0759/HOUSE

    Erection of a part single, part two storey rear extension with first floor side extension over garage.

    59 Carleton Rise Welwyn AL6 9RQ

    Received 21 Mar 2018
  2. Decided - Granted6/2024/0129/HOUSE

    Erection of a rear conservatory

    34 Somers Road Welham Green Hatfield AL9 7PX

    Received 23 Jan 2024
  3. Decided - Granted6/2026/0259/TPO

    T1 sycamore to fell (in advance decline). TPO 1074 (2024) G5

    6 Endymion Court Hatfield AL10 8AU

    Received 13 Feb 2026
  4. Decided - Granted6/2020/1830/COND

    6/2020/1830/COND - Submission of details pursuant to condition 5 (contamination remediation scheme and works) on planning permission 6/2019/1067/MAJ dated 09 July 2020.

    Hill Top Neighbourhood Centre High View Hatfield AL10 8HZ

    Received 24 Jul 2020
  5. Decided - Granted6/2021/0789/HOUSE

    Erection of a single storey timber orangery

    Ayot Lodge Ayot Green Ayot St Peter Welwyn AL6 9AB

    Received 11 Mar 2021
  6. Decided - Granted6/2017/0153/EM

    Reduce height of Cherry tree in back garden by 3 metres and radius by 1.5 metres, plus removal of Juniper blue heaven tree

    19 Reddings Welwyn Garden City AL8 7LA

    Received 26 Jan 2017
  7. Decided - Granted6/2019/1324/EM

    Reduce 1 x Hornbeam tree by 1.5 metres in height & width.

    54 Blakemere Road Welwyn Garden City AL8 7PJ

    Received 4 Jun 2019
  8. Decided - Granted6/2020/0474/EM

    Retention of velux windows to rear elevation to facilitate loft conversion

    105 Woodhall Lane Welwyn Garden City AL7 3TH

    Received 18 Feb 2020
  9. Decided - Granted6/2018/1599/FULL

    Erection of single storey detached dwelling with car parking / garaging, summerhouse and landscaping

    Land adjacent to 20 Kindersley Close Welwyn AL6 9RN

    Received 14 Jun 2018
  10. Under Consultation6/2026/1432/TPO

    TPO 203 & 879 - T1- Sweet chestnut tree to reduce all round by 2-3 metres for maintenance and light T2- Blue Atlantic Cedar tree- to cut back by 2-3 metres from the neighbours house and balance the crown for maintenance and light T3-Blue Atlantic Cedar tree to reduce all round by 2 metres for maintenance and light

    1 Oaklands View Welwyn AL6 0RJ

    Received 13 Aug 2026
  11. Decided - Refused6/2020/0978/TPO

    Fell 1 x Oak Tree Trees covered by [TPO 53] Fell 2 x Hornbeam Trees covered by [TPO 53]

    6 The Avenue Welwyn AL6 0PN

    Received 30 Apr 2020
  12. Decided - Granted6/2024/0959/PN24

    Installation of 214 x 435w solar PV panels to the roof of the building

    Toolbank - Hatfield Gypsy Moth Avenue Hatfield Business Park Hatfield AL10 9BS

    Received 22 May 2024
  13. Decided - Granted6/2023/1651/EMT

    1 x Judas tree to remove 1x limb growing in front of bedroom windows, reduce remainder by 1.2m 1 x Oak to reduce lateral growth by around 1.5m

    64 Brockswood Lane Welwyn Garden City AL8 7BQ

    Received 8 Aug 2023
  14. Decided6/2021/3328/TC

    1 x Magnolia to reduce by 1m height & 1.2m width

    76 Valley Road Welwyn Garden City AL8 7DP

    Received 24 Nov 2021
  15. Decided - Granted6/2016/2157/TPO

    Fell Eucalyptus tree - Conservation Area

    15 Lady Grove Welwyn Garden City AL7 4DS

    Received 14 Oct 2016
  16. Decided - Granted6/2020/2804/PN8

    Prior approval for a single storey rear extension measuring 4.0m in depth, 3.6m in height and 2.5m to the eaves

    9 Lockley Crescent Hatfield AL10 0TL

    Received 25 Oct 2020
  17. Decided - Granted6/2017/1414/HOUSE

    Erection of front car port with the installation of 2 rooflights

    30 Pooleys Lane Welham Green Hatfield AL9 7LF

    Received 29 Jun 2017
  18. Decided - Granted6/2020/1903/HOUSE

    Erection of a single storey side extension and insertion of first floor window in south-east elevation

    7 Wild Hill, Hatfield, AL9 6EB

    Received 3 Aug 2020
  19. Decided - Granted6/2026/1090/HOUSE

    Erection of a single storey rear extension

    1 The Terrace West End Lane Essendon Hatfield AL9 6AU

    Received 23 Jun 2026
  20. Decided - Granted6/2020/0089/HOUSE

    Erection of single storey rear extension

    50 Bell Lane Hatfield AL9 7AY

    Received 14 Jan 2020
  21. Decided6/2019/2707/TC

    Fell 1 x Ailanthus (T1)

    30A High Oaks Road Welwyn Garden City AL8 7BH

    Received 28 Oct 2019
  22. Decided - Granted6/2020/1535/EMT

    Reduce 1 x Ash tree by approx. 50% (left) and 1 x Ash tree by approx. 30% and remove limb growing over roof to rear

    30 Moss Green Welwyn Garden City AL7 3TE

    Received 26 Jun 2020
  23. Decided - Granted6/2023/2557/HOUSE

    Erection of single storey rear/side extension with rooflight

    29 Elm Gardens Welwyn Garden City AL8 6RX

    Received 22 Dec 2023
  24. Decided6/2019/0152/TPO

    Fell 1 x Laburnum tree (T1), 1 x Pyracantha tree (T2), 1 x Cotoneaster tree (T3) and 1 x Ilex tree (T4) - covered by conservation area

    25 Church Street Hatfield AL9 5NF

    Received 24 Jan 2019

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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