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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
22,147Searchable applications
295Recorded as pending
86%Approval rate · 17,983 approved or refused records
2,546Refused applications

15,437 approved · 2,546 refused · 1,139 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/1728/HOUSE

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

    16 The Gardens Brookmans Park Hatfield AL9 7UL

    Received 4 Aug 2017
  2. Decided - Withdrawn6/2024/0343/EM

    Erection of a single storey side and single storey rear extension and replacement garage

    16 Guessens Road Welwyn Garden City AL8 6QR

    Received 21 Feb 2024
  3. Decided6/2026/1005/TC

    Leyland cypress hedge to reduce by approximately 3m in height

    6 Meadow Green Welwyn Garden City AL8 6SS

    Received 8 Jun 2026
  4. Decided - Withdrawn6/2024/0457/COND

    Submission of details pursuant of condition 15 (Community Use Agreement) on planning permission 6/2021/3489/MAJ

    The Woodside Centre The Commons Welwyn Garden City Hertfordshire AL7 4DD

    Received 11 Mar 2024
  5. Decided - Granted6/2024/2009/EMT

    Removal of hedgerow in the back garden to be replaced with a fence

    58 Lemsford Lane Welwyn Garden City AL8 6YJ

    Received 10 Oct 2024
  6. Decided - Granted6/2017/1178/HOUSE

    Erection of a single storey side and rear extension

    25 Oaklands Avenue Brookmans Park Hatfield AL9 7UH

    Received 30 May 2017
  7. Decided6/2018/1059/TPO

    Reduce 1 x Beech tree 3 lower limbs by 2m - Conservation area

    1 Dellcott Close Welwyn Garden City AL8 7BB

    Received 24 Apr 2018
  8. Decided - Granted6/2018/2201/FULL

    Erection of 1 x dwelling with front boundary wall, railings and gates following the demolition of existing dwelling

    28 Brookmans Avenue Brookmans Park Hatfield AL9 7QJ

    Received 23 Aug 2018
  9. Decided - Granted6/2021/2191/VAR

    Variation of condition 4 (drawing numbers), on Listed Building Consent 6/2019/0218/LB

    Northaw House Coopers Lane Northaw Potters Bar EN6 4NG

    Received 20 Jul 2021
  10. Decided - Granted6/2020/0817/HOUSE

    Erection of a two storey side extension, single storey rear extension, rear dormer and hip to gable roof enlargement

    33 Dixons Hill Close, Welham Green, Hatfield, AL9 7EF

    Received 1 Apr 2020
  11. Decided - Granted6/2017/1315/EM

    T1 - Reduce Red Oak to balance crown by 30% lift crown to 5 metres and T3-T14 12 x Leylandii to be felled and to remove stumps

    30A High Oaks Road Welwyn Garden City AL8 7BH

    Received 16 Jun 2017
  12. Decided - Granted6/2022/1624/EM

    Solar panels on rear roof

    10 Thumbswood Welwyn Garden City AL7 4QE

    Received 11 Jul 2022
  13. Decided - Granted6/2021/0963/EMT

    Reduce 1 x Lawson Cypress by 4m

    113 Oakdale Welwyn Garden City AL8 7QS

    Received 24 Mar 2021
  14. Decided - Refused6/2021/0012/EM

    Demolition of rear lean-to structure and erection of single storey rear extension (Internal info - associated LAWP application 6/2021/0009/LAWP)

    217 Knightsfield Welwyn Garden City AL8 7QL

    Received 31 Dec 2020
  15. Decided - Granted6/2018/1588/HOUSE

    Erection of a single storey rear extension and alterations to openings on existing rear extension

    15 Heronswood Road Welwyn Garden City AL7 3NX

    Received 13 Jun 2018
  16. Decided6/2022/2157/TC

    T1 & T2 - to remove Conifer trees from the driveway over the course of two seasons by reducing 50% of crown in year 1 (winter of 2022/23), then the remainder of both trees to ground level during the winter of 2023/24, to prevent further damage and to enable suitable step free access to the property.. The trees are likely the cause of the external cracking of adjacent property and that the displacement of the driveway and fence is a result of root proliferation, which have been planted above the property’s connection to the main sewer. If it is considered appropriate, we would place additional hedging and/or trees on other side of the garage near to the driveway.

    102 Handside Lane Welwyn Garden City AL8 6SY

    Received 16 Sept 2022
  17. Decided - Refused6/2019/1998/HOUSE

    Erection of a two storey side extension, single storey rear extension following the demolition of existing detached garage, rear conservatory and outbuildings

    8 Dudley Hill Close Welwyn AL6 0QQ

    Received 12 Aug 2019
  18. Decided - Granted6/2026/0887/ADV

    Removal of existing non-illuminated signage and erection of an electronic advertising display to the Eastern end of the Southern Elevation

    The Galleria Land Securities Comet Way Hatfield AL10 0XR

    Received 19 May 2026
  19. Decided - Granted6/2024/2270/EM

    Garage Conversion & Rear Bay Extension With Bi-Fold Doors

    83 Pentley Park Welwyn Garden City AL8 7SL

    Received 26 Nov 2024
  20. Decided - Granted6/2021/0381/HOUSE

    Formation of a vehicle crossover and the laying of a hardstanding including the relocation of existing hedging

    3 Sandpit Road Welwyn Garden City AL7 3TW

    Received 8 Feb 2021
  21. Appeal Decided - Dismissed6/2018/2482/FULL

    Retrospective change of use for existing side extension to be used as a separate 1 bedroom dwelling

    1A Meadow Croft, Hatfield, AL10 0SG

    Received 27 Sept 2018
  22. Decided - Granted6/2020/0256/FULL

    Erection of 1x dwelling and garage following demolition of existing dwelling and garage

    105 Attimore Road Welwyn Garden City AL8 6LG

    Received 29 Jan 2020
  23. Decided - Granted6/2026/1406/COND

    Submission of details pursuant to condition 1 (Biodiversity Net Gain Plan) and condition 2 (Landscape and Ecology Management Plan) on planning application 6/2026/0400/FULL

    Bothys Field Holwell Court Farm

    Received 7 Aug 2026
  24. Decided - Granted6/2024/0135/EMT

    1 x Prunus cerasifera to fell

    33 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 23 Jan 2024

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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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 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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