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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
32,337Searchable applications
303Recorded as pending
87%Approval rate · 27,046 approved or refused records
3,541Refused applications

23,505 approved · 3,541 refused · 1,699 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 20 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/2750/EM

    Fell 1 x Pine tree - Conservation area

    40 Applecroft Road Welwyn Garden City AL8 6LA

    Received 24 Nov 2017
  2. Decided - Granted6/2015/1778/LAWP

    Certificate of Lawfulness for the erection of a single storey rear extension measuring 4.5m deep and 3m high

    64 Bramble Road Hatfield AL10 9SE

    Received 20 Aug 2015
  3. Decided - Granted6/2021/1082/HOUSE

    Conversion of the garage into a bedroom, erection of a rear extension, insertion of downstairs bathroom

    13 Ellenbrook Crescent Hatfield AL10 9RP

    Received 1 Apr 2021
  4. Decided - Granted6/2018/2237/EM

    Fell 1 x Silver Birch tree and replace with new tree

    4 Reddings Welwyn Garden City AL8 7LA

    Received 29 Aug 2018
  5. Decided - Granted6/2018/1629/HOUSE

    Erection of single storey rear extension

    127 Campion Road Hatfield AL10 9FL

    Received 20 Jun 2018
  6. Decided - Granted6/2022/0848/HOUSE

    Erection of single storey rear extension, conversion of garage into habitable space and alterations to front and side openings.

    50 Gresley Close Welwyn Garden City Hertfordshire AL8 7QB

    Received 7 Apr 2022
  7. Decided - Granted6/2022/1724/VAR

    Variation of condition 12 (removal of details of the greenhouse building and building comprising a potting shed and toilet) on planning permission 6/2021/3320/VAR

    Plot 6000 Land Adjacent to the Porsche Garage Hatfield House Hatfield Business Park Hatfield AL10 9UA

    Received 21 Jul 2022
  8. Decided - Granted6/2021/2785/FULL

    Conversion of level 4 plant room approved under 6/2019/2086/MAJ to 1 x one-bed flat

    Minster House Minster Close Hatfield AL10 9JN

    Received 28 Sept 2021
  9. Decided - Granted6/2024/2333/TPO

    Remove Lime tree and 2 other Maple Trees. There is a TPO on the Lime Tree however the reason for the removal of the tree is because it is decaying down the main stem. The customer also has requested that 2 self seeded Maple trees are also removed TPO 814 (2018) G1

    7 Welwyn Hall Gardens Welwyn AL6 9LF

    Received 3 Dec 2024
  10. Decided - Granted6/2024/0687/COND

    Submission of details pursuant to condition number 1 (Materials) on planning permission 6/2021/1339/FULL

    44 Mymms Drive Brookmans Park AL9 7AF

    Received 11 Apr 2024
  11. Decided - Granted6/2017/0893/EM

    Fell Lawson Cypress tree (T1) and reduce Yew tree (T2) by upto 1m

    5 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 25 Apr 2017
  12. Decided - Granted6/2019/0150/EM

    Erection of single storey rear extension following demolition of conservatory

    103 Oakdale Welwyn Garden City AL8 7QP

    Received 25 Jan 2019
  13. Decided - Granted6/2022/2667/COND

    Submission of details pursuant to condition number 1 (Natural England EMS Licence) for 6/2022/0183/HOUSE

    Monkswell The Ridgeway Cuffley Potters Bar EN6 4BH

    Received 22 Nov 2022
  14. Decided - Granted6/2025/2208/TPO

    T1 Larch to fell (dead). T2 Larch to fell (dead). (TPO 108 G14) (5 DAY NOTICE)

    10 Mardley Wood Welwyn AL6 0UX

    Received 20 Oct 2025
  15. Decided - Granted6/2018/1745/EM

    Erection of wooden garden shed

    17 Pentley Park Welwyn Garden City AL8 7RT

    Received 3 Jul 2018
  16. Decided - Withdrawn6/2016/1932/TPO

    Reduce and make safe 1 Oak tree - Dead & Dangerous - Conservation Area

    31 Woodland Rise, Welwyn Garden City, AL8 7LJ

    Received 19 Sept 2016
  17. Decided - Granted6/2020/2548/EMT

    Fell 1 x Ash Tree and 1 x Maple Tree to ground level

    26 Birdcroft Road Welwyn Garden City AL8 6EQ

    Received 1 Oct 2020
  18. Decided - Split6/2023/1463/COND

    Submission of details pursuant to condition number 1 (underground cables), 2 (cycle parking), 3 (sustainable energy), 4 (landscaping scheme), 5 (noise mitigation), 6 (materials samples), 7 (EV charging) on planning permission 6/2022/1855/FULL

    Land to the rear of 35 Skimpans Close Welham Green Hatfield AL9 7PA

    Received 13 Jul 2023
  19. Decided - Granted6/2021/2178/FULL

    Change of use and demolition of the existing car dealership/service centre and the erection of 12 flexible B8/E(g)(iii) (industrial processes) units with office space, access and parking

    Welwyn Saab 36 Brownfields Welwyn Garden City AL7 1AN

    Received 19 Jul 2021
  20. Appeal Decided - Allowed6/2018/1647/HOUSE

    Erection of single storey rear extension

    16 Northaw Road West, Northaw, Potters Bar, EN6 4NR

    Received 22 Jun 2018
  21. Decided - Granted6/2017/1275/HOUSE

    Erection of part single part two storey rear extension

    10 Nursery Gardens Welwyn Garden City AL7 1SF

    Received 12 Jun 2017
  22. Decided - Granted6/2018/0009/LB

    Replacement of existing windows and doors to rear of building.

    11 Fore Street Hatfield AL9 5AN

    Received 2 Jan 2018
  23. Decided - Granted6/2017/2807/EM

    Alterations to door and windows on front elevation, patio doors to rear elevation and insertion of sun pipes to existing roof

    100 Howlands Welwyn Garden City AL7 4RG

    Received 30 Nov 2017
  24. Decided - GrantedN6/2013/0073/TC

    Reduce Beech tree by 20%

    The Doves, Hill Farm Lane, Ayot St Lawrence, WELWYN, AL6 9BU

    Received 14 Jan 2013

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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