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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
19,403Searchable applications
298Recorded as pending
86%Approval rate · 15,678 approved or refused records
2,175Refused applications

13,503 approved · 2,175 refused · 983 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 12 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2024/2425/HOUSE

    Conversion of existing outbuilding into habitable accommodation with alterations to the fenestration, to be used ancillary to the main dwelling

    35 Church Street Welwyn AL6 9LP

    Received 23 Dec 2024
  2. Decided - Granted6/2020/0516/TPO

    Reduce 4 x Oak Trees by 20% and thin by 20%

    10 Mardley Heights Welwyn AL6 0TX

    Received 24 Feb 2020
  3. Decided6/2023/0920/TC

    G2 - Group of Plum to fell - these are in poor condition, poor form and are reaching the end of their lifespan. G3 - Group of Leyland cypress to reduce by 3m in height as they are starting to become too large and dominate the rear corner of the garden

    6 The Orchard Welwyn Garden City AL8 7PL

    Received 2 May 2023
  4. Decided - Granted6/2025/1701/EMT

    Reduce 1 x Malus by 3m (T3)

    40 Parkway Welwyn Garden City AL8 6HQ

    Received 7 Aug 2025
  5. Decided - Granted6/2022/1897/COND

    Submission of details pursuant to condition number 1 (Samples of Materials) on application ref: 6/2022/0587/FULL

    10 Mannicotts Welwyn Garden City AL8 7BW

    Received 15 Aug 2022
  6. Decided - Granted6/2018/0138/HOUSE

    Demolition of existing front porch and erection of a single-storey extensions to the front of the property.

    39 Ellenbrook Lane Hatfield AL10 9RW

    Received 16 Jan 2018
  7. Decided - Granted6/2019/0986/COND

    Submission of details pursuant to condition 1 (refuse & recycling store details), 2 (Cycle parking details), 4 (Hard Boundary Details) on planning permission 6/2018/2968/FULL

    11 Holly Close, Hatfield, AL10 9JB

    Received 24 Apr 2019
  8. Decided - Granted6/2024/0497/HOUSE

    Erection of a single storey rear infill extension with insertion of rooflights into new and existing roofs, part garage conversion and alterations to existing openings to side and rear elevations

    44 Longcroft Lane Welwyn Garden City AL8 6EF

    Received 14 Mar 2024
  9. Decided - Granted6/2023/1879/HOUSE

    Erection of outbuilding/ annexe following the demolition of existing shed

    39 Ryelands Welwyn Garden City AL7 4LH

    Received 11 Sept 2023
  10. Decided - Refused6/2019/0795/HOUSE

    Erection of a single storey rear extension, single storey side/rear extension and works including the extension of existing driveway

    10 Raymonds Close Welwyn Garden City AL7 4TH

    Received 2 Apr 2019
  11. Decided - Withdrawn6/2020/1065/VAR

    Removal of condition 4 (details of mobile classrooms) and condition 5 (removal of classrooms) from planning permission 6/2019/0085/MAJ

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

    Received 13 May 2020
  12. Decided - Granted6/2020/2933/TPO

    2 x Sycamore - fell

    21 Oaklea Welwyn AL6 0PT

    Received 6 Nov 2020
  13. Decided - Granted6/2019/0841/HOUSE

    Erection of a single storey rear extension, following demolition of existing conservatory

    13 The Swallows Welwyn Garden City AL7 1BX

    Received 8 Apr 2019
  14. Decided - Refused6/2021/0593/LAWP

    Certificate of lawfulness for the erection of two storey rear extension

    36 Vineyards Road Northaw Potters Bar EN6 4PA

    Received 24 Feb 2021
  15. Decided - Granted6/2018/2661/HOUSE

    Erection of a single storey rear extension

    113 Haldens Welwyn Garden City AL7 1DQ

    Received 17 Oct 2018
  16. Decided - Split6/2026/0121/COND

    Submission of details pursuant to Condition 5 (Archaeological Written Scheme of Investigation (WSI) & 8 (Construction Environmental Management Plan (CEMP) on planning permission 6/2023/1532/OUTLINE

    Land at South Way Hatfield

    Received 26 Jan 2026
  17. Decided - Split6/2024/2115/COND

    Submission of details pursuant to Condition 1 (Trees), Condition 2 (Landscaping), Condition 7 (Tactile paving crossing) Condition 8 (Travel Plan), Condition 10 (Cycle parking), Condition 11 (EV Charging) on planning permission 6/2024/0525/FULL

    Isabel Hospice Head Office 99 Bridge Road East Welwyn Garden City AL7 1GL

    Received 1 Nov 2024
  18. Appeal Decided - Dismissed6/2021/0360/PN27

    Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 9m in height.

    53 The Ridgeway Cuffley Potters Bar EN6 4BD

    Received 3 Feb 2021
  19. Decided - Granted6/2021/3280/FULL

    Installation of vehicular crossover to front

    2D Plough Hill Cuffley Potters Bar EN6 4DR

    Received 18 Nov 2021
  20. Decided - Granted6/2021/1844/HOUSE

    Erection of single storey rear/side extension, including conversion of existing garage into home study/office space and cycle storage, and alterations to fenestration.

    35 Bluebridge Road Brookmans Park AL9 7UW

    Received 15 Jun 2021
  21. Decided - Granted6/2021/1768/LAWE

    Certificate of lawfulness for the existing grounds store for cricket field maintenance equipment.

    Village Hall Newgate Street Village Hertford SG13 8RP

    Received 7 Jun 2021
  22. Decided6/2024/0748/TC

    Ash tree crown reduction by 30%

    86 The Vineyard Welwyn Garden City AL8 7PU

    Received 23 Apr 2024
  23. Decided - Granted6/2024/1595/TPO

    TPO 532 (2016) T1 Sycamore to fell (dead).

    137 Church Road Potters Bar EN6 1EU

    Received 21 Aug 2024
  24. Decided - Refused6/2022/0621/HOUSE

    Erection of single storey side extension, extension of loft and installation of front and rear dormer windows to create habitable rooms

    1A Roundabout Lane Welwyn AL6 0TQ

    Received 16 Mar 2022

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

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    Planning permission drawings: how to read plans

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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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