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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
24,611Searchable applications
313Recorded as pending
86%Approval rate · 20,174 approved or refused records
2,787Refused applications

17,387 approved · 2,787 refused · 1,294 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/1245/EMT

    T1-Oak- Reduce crown by 2-3 metres all round to maintain size and shape for the size of the garden

    61 Pentley Park Welwyn Garden City AL8 7SF

    Received 26 May 2022
  2. Decided6/2019/2840/TC

    Reduce 2 x Silver Birch tree by 3-4 meters Reduce 1 x Thorn tree by 50% covered by conservation area

    Handside Hall Day Centre Lemsford Lane Welwyn Garden City AL8 6YL

    Received 11 Nov 2019
  3. Decided - Granted6/2019/2582/TPO

    Reduce 1 x Acacia tree by 30% TPO 853 (2018) T1

    117 Birchwood Avenue Hatfield AL10 0PT

    Received 9 Oct 2019
  4. Decided - Granted6/2024/0303/FULL

    A temporary construction access, haul road and parking compound in association with development under 6/2022/1375/MAJ

    Land at Hollybush Lane Creswick Welwyn Garden City

    Received 14 Feb 2024
  5. Decided - Granted6/2018/1566/HOUSE

    Erection of single storey side and rear extension

    84 High Dells Hatfield AL10 9HU

    Received 7 Jun 2018
  6. Decided - Granted6/2020/3221/COND

    Submission of details pursuant to condition 1 (doors and windows detailed drawings) on listed building consent 6/2020/1213/LB

    The Wood Barn The Estate Yard North Mymms Park Hatfield AL9 7TR

    Received 30 Nov 2020
  7. Decided - Granted6/2020/0672/COND

    Submission of details pursuant to condition 1 (submission of photographic and written archaeological building record) on planning permission 6/2019/1413/FULL

    4 London Road Welwyn AL6 9EL

    Received 10 Mar 2020
  8. Decided - Granted6/2025/1909/HOUSE

    Erection of an ancillary detached outbuilding in the rear garden. Installation of two AC chiller units and white render to the rear elevation of the outbuilding and associated hard and soft landscaping.

    154 Tolmers Road Cuffley Potters Bar EN6 4JR

    Received 5 Sept 2025
  9. Decided - Granted6/2025/0468/HOUSE

    Erection of a two storey rear/side extension and single storey rear extension following the demolition of the existing conservatory

    28 Briars Wood Hatfield AL10 8DG

    Received 13 Mar 2025
  10. Decided - Granted6/2025/0527/HOUSE

    Alterations to the existing single-story rear extension, to form a single storey side and rear extension and first-floor rear extension. Installation of a skylight on the existing rear roof

    35 Attimore Road Welwyn Garden City AL8 6LQ

    Received 20 Mar 2025
  11. Decided - Granted6/2021/0516/VAR

    Variation of conditions 3, 4, 5, 6, 8, 11, 13, 24, 28, 30, 31 & 32 on outline planning permission (6/2018/0873/OUTLINE) for a residential-led development of up to 650 residential units, a two-form entry primary school, provision of six gypsy and traveller pitches, a new local centre (comprising retail and community uses), new vehicular access from Herns Lane, car parking, associated infrastructure and landscaping works with all matters except access reserved

    Land at Panshanger, Welwyn Garden City, AL7 2QJ

    Received 17 Feb 2021
  12. Decided - Refused6/2017/1951/HOUSE

    Erection of a two storey side and single storey front and side extension

    13 Parsonage Lane Welham Green Hatfield AL9 7NB

    Received 31 Aug 2017
  13. Decided - Refused6/2022/1471/LAWP

    Certificate of lawfulness to convert garage into dual garage/gymnasium

    1 High Oaks Road Welwyn Garden City AL8 7BJ

    Received 23 Jun 2022
  14. Decided - Granted6/2022/1892/HOUSE

    Erection of a single storey front infill extension with part first floor front extension.

    2 King James Avenue Cuffley Potters Bar EN6 4LR

    Received 15 Aug 2022
  15. Decided - Granted6/2024/1537/HOUSE

    Erection of additional storey, single storey side extension and front and rear porch canopy following the demolition of existing conservatory and garage, chimney removal and façade alterations.

    1A Heath Road Welwyn AL6 0TP

    Received 13 Aug 2024
  16. Decided - Granted6/2026/1119/ADV

    Proposed installation of signage

    Hertfordshire Constabulary Stanborough Road Welwyn Garden City AL8 6XF

    Received 29 Jun 2026
  17. Decided - Granted6/2020/2719/LAWP

    Certificate of lawfulness for the erection of a garden room

    2 Archers Ride Welwyn Garden City AL7 4PS

    Received 19 Oct 2020
  18. Decided - Granted6/2024/2175/EMT

    T1 - 1 x Field Maple, starting to encroach over main road (Howlands). Reduce crown removing 1-2m all round

    183 Howlands Welwyn Garden City AL7 4RL

    Received 12 Nov 2024
  19. Decided - Granted6/2021/3145/COND

    Submission of details pursuant to condition 2 (hard and soft landscape works) on planning application 6/2019/2827/HOUSE

    1A Marlborough Close Welwyn AL6 0UG

    Received 3 Nov 2021
  20. Decided - Granted6/2018/2753/EM

    Reduce crown of 1 x Walnut tree with twin stem by 30% or 12 foot overall reduction

    15 Mannicotts Welwyn Garden City AL8 7BW

    Received 25 Oct 2018
  21. Decided - Granted6/2017/2095/TPO

    Removal of two Silver birch trees covered by TPO 108

    31 Mardley Wood Welwyn AL6 0UY

    Received 18 Sept 2017
  22. Decided - Granted6/2022/0061/FULL

    Change of use from a residential dwelling (C3(a)) to residential care home to accommodate 3 x children (C2)

    4 Strawberry Field Hatfield AL10 8LS

    Received 11 Jan 2022
  23. Decided - Refused6/2023/2111/FULL

    Erection of a new dwelling following demolition of existing dwelling

    Holwell Hyde Cottage Holwell Hyde Lane Welwyn Garden City AL7 4AA

    Received 18 Oct 2023
  24. Decided - Granted6/2016/2328/HOUSE

    Erection of single storey rear extension following demolition of existing conservatory

    14 Wilshere Road Welwyn AL6 9PX

    Received 7 Nov 2016

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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