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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
20,494Searchable applications
298Recorded as pending
86%Approval rate · 16,561 approved or refused records
2,336Refused applications

14,225 approved · 2,336 refused · 1,045 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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. Appeal Decided - Dismissed6/2018/2010/HOUSE

    Erection of single storey front/side extension and raise roof height to facilitate conversion of loft to habitable space including alterations to openings

    41 The Avenue Welwyn AL6 0PW

    Received 31 Jul 2018
  2. Decided - Granted6/2018/0862/LAWP

    Certificate of lawfulness for erection of two single storey side and rear extensions, a single storey rear extension, a rear dormer window, double hipped to gable roof extensions, front roof lights, a replacement pitched roof on top of the existing two storey rear extension, and a new rear facing opening with Juliet balcony

    The Holdings Brocket Road Welwyn Garden City AL8 7TU

    Received 29 Mar 2018
  3. Decided6/2022/2396/TC

    Fell 1 x Cotoneaster

    51 Longcroft Gardens Welwyn Garden City AL8 6JR

    Received 14 Oct 2022
  4. Decided - Granted6/2021/3036/PN15

    Prior approval for the installation of 15.0m Phase 8 Monopole C/W wrapround Cabinet at base and associated ancillary works.

    Homestead Road Hatfield AL10 0UL

    Received 22 Oct 2021
  5. Decided - Granted6/2026/0869/ADV

    Installation of 1 no. new communications Kiosk with integrated defibrillator and advertising display

    Land Outside 54 Howardsgate Welwyn Garden City AL8 6BP

    Received 18 May 2026
  6. Decided - Granted6/2019/2595/LAWE

    Certificate of lawfulness for single storey side extension

    53 Cecil Crescent Hatfield AL10 0HG

    Received 14 Oct 2019
  7. Decided - Withdrawn6/2020/0964/VAR

    Variation of condition of 4 (approved plans) on planning permission 6/2019/0218/LB

    Northaw House Coopers Lane Northaw Potters Bar EN6 4NG

    Received 29 Apr 2020
  8. Decided - Granted6/2022/0219/HOUSE

    Erection of Single Storey Rear Extension

    11 Digswell Park Road Welwyn Garden City Hertfordshire AL8 7NW

    Received 1 Feb 2022
  9. Decided - Granted6/2020/1358/HOUSE

    Erection of two storey front, single storey side and rear extension, hip to gable loft conversion with installation of rear dormer and alterations to fenestration following demolition of existing garage

    33 Oaklands Avenue Hatfield AL9 7UH

    Received 15 Jun 2020
  10. Decided6/2022/2859/TC

    T6 Lombardy Poplar Fell to ground level as it is dying. T8 Poplar Crown reduce by 2 metres to maintain size. T13 (T14 on tree location plan) Cherry Fell to ground level as it is dead.

    Woodside House Bridge Road Welwyn Garden City AL8 6UL

    Received 19 Dec 2022
  11. Decided - Granted6/2025/1033/TC

    1x Oak Tree dying and dangerous. Tree surgeons have confirmed the tree is dying and leaning towards the property and needs immediate removal

    6 Brockett Close Welwyn Garden City AL8 7BN

    Received 2 Jun 2025
  12. Decided6/2022/1829/TC

    1 x Silver birch (right side) to reduce by 2.5m in height to balance crown. Reduce width by around 1m. 1 x Silver birch (left side) to reduce by 2.5m height and 2m in width Both trees are to be reduced to maintain size and prevent shading into neighbouring properties

    73 Moorlands Welwyn Garden City AL7 4QJ

    Received 4 Aug 2022
  13. Decided - Granted6/2021/1051/COND

    Submission of details pursuant to condition 2 (planting proposals for the front garden), on planning permission 6/2017/2162/HOUSE

    54 Mymms Drive Hatfield AL9 7AF

    Received 30 Mar 2021
  14. Decided - Refused6/2020/0195/HOUSE

    Erection of single storey side and rear extension

    89 Lemsford Road Hatfield AL10 0DZ

    Received 27 Jan 2020
  15. Decided - Refused6/2022/1332/FULL

    Erection of 2-storey side/rear extension to existing building, with internal alterations to suit new layout, all to provide additional Dental Surgery capacity

    178 Handside Lane Welwyn Garden City AL8 6SZ

    Received 9 Jun 2022
  16. Decided - Granted6/2020/3403/HOUSE

    Erection of a single storey front extension with new window to side elevation

    8 Canonsfield Welwyn AL6 0QD

    Received 21 Dec 2020
  17. Decided - Granted6/2018/2263/EM

    Construction of timber framed outbuilding in the rear of property into gym, office and garden furniture storage

    41 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 31 Aug 2018
  18. Decided - Granted6/2024/2090/COND

    Submission of details pursuant of condition 1 (materials), 2 (landscaping) 3 (planting), 4 (glazing), 5 (roof), 6 (EV Charger) and 7 (energy efficiency) on planning permission 6/2023/2332/FULL

    54 Brookmans Avenue Hatfield AL9 7QQ

    Received 29 Oct 2024
  19. Decided - Granted6/2021/0338/PN27

    Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse which is 18.56m in length, 4.38 in width and 3m in height.

    2 Danesbury Park Road Welwyn AL6 9SE

    Received 2 Feb 2021
  20. Decided - Granted6/2023/1768/LAWP

    Certificate of lawfuness for the erection of a detached building

    3 Holwell Manor Cottages Essendon Hill Essendon Hatfield AL9 6AE

    Received 22 Aug 2023
  21. Decided - Granted6/2018/2910/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    8 Summer Dale Welwyn Garden City AL8 7QJ

    Received 13 Nov 2018
  22. Decided - Granted6/2020/3242/LAWP

    Certificate of lawfulness for a single storey flank/side extension with flat roof and fenestration details measuring 1.52m in width (less than half the width of the original dwelling)

    22 The Avenue Welwyn AL6 0PP

    Received 3 Dec 2020
  23. Decided - Granted6/2020/1454/EMT

    Fell 1 x Holly tree to ground level

    41 Barleycroft Road Welwyn Garden City AL8 6JX

    Received 22 Jun 2020
  24. Decided - Granted6/2019/1153/EM

    Reduce 1 x Sycamore tree by 4 metres in height and 2 metres in width Reduce 1 x Willow tree by 3 metres

    1 The Links Welwyn Garden City AL8 7DS

    Received 13 May 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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