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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
22,074Searchable applications
295Recorded as pending
86%Approval rate · 17,914 approved or refused records
2,540Refused applications

15,374 approved · 2,540 refused · 1,138 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 13 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2019/1243/HOUSE

    Erection of single storey rear extension

    52 Bell Lane Brookmans Park Hatfield AL9 7AY

    Received 22 May 2019
  2. Decided - Granted6/2024/1697/EMT

    Acer to fell. No replanting proposed.

    116 Oakdale Welwyn Garden City AL8 7QX

    Received 4 Sept 2024
  3. Decided - Granted6/2017/0508/COND

    Submission of details pursuant to condition 3 (external surfaces samples) and 5 (mechanical ventilation) attached to planning permission reference 6/2016/1647/MAJ, dated 15/02/2017

    Encore House 51 Great North Road Hatfield AL9 5EN

    Received 14 Mar 2017
  4. Decided - Granted6/2017/1281/EM

    Erection of single storey rear extension

    2 Malmsdale Welwyn Garden City AL8 7QN

    Received 13 Jun 2017
  5. Decided6/2021/0387/TC

    Crown Reduce 2x London Plane trees by upto 3m

    1 Brockswood Lane Welwyn Garden City AL8 7BA

    Received 8 Feb 2021
  6. Decided - Granted6/2024/0919/EM

    Replace current driveway to create safe wheelchair access to the garden with new fencing

    41 Mill Green Road Welwyn Garden City AL7 3UX

    Received 17 May 2024
  7. Decided - Granted6/2026/0115/HOUSE

    Conversion of the garage to habitable use, installation of a window to the front elevation and installation of an external door to the rear elevation of the property.

    21 Goldings Crescent Hatfield AL10 8UD

    Received 26 Jan 2026
  8. Decided - Refused6/2019/2349/LAWP

    Certificate of lawfulness for the erection of front porch, single and double storey rear extension, alterations to openings and removal of chimney

    12 Longlands Road Welwyn Garden City AL7 3QB

    Received 24 Sept 2019
  9. Decided - Refused6/2026/0525/FULL

    Erection of a new dwelling following demolition of the existing building

    73 Mymms Drive Brookmans Park AL9 7AA

    Received 23 Mar 2026
  10. Decided - Granted6/2026/1390/HOUSE

    Loft conversion with side facing dormer and 4 roof lights

    38 Butterwick Way Welwyn AL6 9GH

    Received 5 Aug 2026
  11. Decided - Granted6/2018/1445/HOUSE

    Formation of second driveway to include dropped kerb

    18 Bluebridge Road Brookmans Park Hatfield AL9 7SB

    Received 30 May 2018
  12. Appeal Decided - Dismissed6/2019/2092/LAWP

    Certificate of lawfulness for installation of 1x side dormer to facilitate loft conversion

    40 Great Ley Welwyn Garden City AL7 4TR

    Received 22 Aug 2019
  13. Decided - Granted6/2022/2286/TPO

    T1 is a large Ash tree that has previously been pollarded due to the extensive disease through out the tree. The client wishes to have the tree pollarded again as routine maintenance of the trees in his garden. T2 is a smaller leaning Ash which is showing signs of extensive decay about 3 metres up the main trunk. I have recommended to my client that this tree be reduced behind the decay back to the sub leader and so creating an upright tree. (TPO11 A1)

    54 Brookmans Avenue Brookmans Park AL9 7QQ

    Received 3 Oct 2022
  14. Decided - Granted6/2023/0907/FULL

    Erection of a detached two storey building with accommodation at lower ground level comprising 9 apartments following demolition of existing property with associated bin and cycle storage and car parking provision

    59 New Road Digswell Welwyn AL6 0AL

    Received 27 Apr 2023
  15. Decided - Refused6/2024/0668/PN8

    Prior approval for the erection of a single storey rear extension measuring 5m in depth, 3m in height, 3m to the eaves

    32 Bell Lane Brookmans Park AL9 7AY

    Received 9 Apr 2024
  16. Decided - Granted6/2020/1540/EM

    Demolition of 1725mm tall brick wall fronting bin store area. Reconstruction of wall 900mm to the north, at same height in Flemish bond with brick on edge coping and tile creasing. This will enable concurrent extension of the driveway hard surfacing by 4.2m2, to allow two vehicles to be parked nose to tail.

    21 High Oaks Road Welwyn Garden City AL8 7BJ

    Received 29 Jun 2020
  17. Decided - Granted6/2020/0260/FULL

    Erection of a single storey side extension, alterations to path and installation of petanque court

    Welwyn District Bowls Club Ottway Walk Welwyn AL6 9AT

    Received 29 Jan 2020
  18. Decided - Granted6/2023/2076/EMT

    1 x Ash to reduce by approximately 3.5m height and 2.5m in width.

    217 Thistle Grove, Welwyn Garden City, AL7 4AH

    Received 11 Oct 2023
  19. Decided - Granted6/2025/1863/EMT

    To fell dead monkey puzzle. To reduce failing cherry by approx 4m and prune to shape. To fell small spruce.

    56 Blakemere Road Welwyn Garden City AL8 7PN

    Received 2 Sept 2025
  20. Decided - Granted6/2019/0235/HOUSE

    Alterations to internal and external elevations including replacement of french doors and installation of roof lights and carport dwelling house and conversion of two dwellings into one.

    6 New Place Welwyn AL6 9QA

    Received 4 Feb 2019
  21. Decided - Granted6/2026/0024/HOUSE

    Installation of air source heat pump to rear north elevation of dwelling

    6 Ramblers Way Welwyn Garden City AL7 2JX

    Received 6 Jan 2026
  22. Decided - Granted6/2017/0635/EM

    Fell 1 x Blue Cedar tree

    62 Uplands Welwyn Garden City AL8 7EW

    Received 28 Mar 2017
  23. Decided - Granted6/2022/1953/HOUSE

    Erection of single storey rear extension following removal of conservatory (amended description to remove front boundary treatment and gates 26/9/2022)

    28 Great North Road Welwyn AL6 0PS

    Received 22 Aug 2022
  24. Decided - Granted6/2020/1210/EMT

    Fell 1x dead and dangeous Sycamore Tree

    150 Heronswood Road Welwyn Garden City, AL7 3EU.

    Received 29 May 2020

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

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    Planning application documents: what to read first

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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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