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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
24,587Searchable applications
313Recorded as pending
86%Approval rate · 20,156 approved or refused records
2,786Refused applications

17,370 approved · 2,786 refused · 1,289 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2018/0703/EM

    Alterations to the rear ground floor doors and windows.

    5 High Oaks Road Welwyn Garden City AL8 7BJ

    Received 15 Mar 2018
  2. Decided - Granted6/2024/0703/HOUSE

    Erection of a single storey rear extension following demolition of existing rear extension, loft conversion with 2 x rear facing dormers and insertion of rooflight to existing rear facing roof

    17 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 15 Apr 2024
  3. Decided - Granted6/2024/1365/EM

    Erection of two north facing dormer windows, the conversion of the attic and associated minor internal alterations to facilitate an additional bedroom, office and storage space in the existing loft

    23 Pentley Park Welwyn Garden City AL8 7RT

    Received 16 Jul 2024
  4. Decided - Granted6/2019/0522/PN8

    Prior approval for the erection of a single storey rear extension measuring 6.0m in depth, 3.475m in heights, 2.5m to the eaves

    6 Whitethorn Welwyn Garden City AL7 3EX

    Received 6 Mar 2019
  5. Decided - Withdrawn6/2018/0230/EM

    Extension of hand standing to include one additional car parking space.

    Land to the front of 252, 254, 256 and 258 Heronswood Road Welwyn Garden City AL7 3JQ

    Received 19 Jan 2018
  6. Decided - Granted6/2016/0636/FULL

    Conversion of four bedroom HMO (C4) into 2no one bedroom maisonettes (C3) including single storey rear extension and front porch

    27 Honeysuckle Gardens Hatfield AL10 8PL

    Received 7 Apr 2016
  7. Decided6/2022/0122/TC

    T2 - Crown reduction of apple tree, by up to 2m from branch tips. T1- crown reduction of liquidamber, cut back to previous cuts (up to 2m from branch tips)

    12 Mannicotts Welwyn Garden City AL8 7BW

    Received 18 Jan 2022
  8. Decided - Granted6/2025/1785/EM

    Replace the guttering, wooden soffits and window trims with UPVC soffits and window trims and guttering

    47 Attimore Road Welwyn Garden City AL8 6LG

    Received 22 Aug 2025
  9. Decided6/2022/2683/TC

    T1 x cherry to dismantle dead rear steam down to union - See annotated picture

    44 Longcroft Lane Welwyn Garden City AL8 6EF

    Received 24 Nov 2022
  10. Decided - Granted6/2020/1155/EMT

    Raise crown 1 x Plum tree [T1] to 3 metres Raise crown 1 x Plum tree [T2] to 3 metres Raise crown 1 x Cherry tree [T5 ] to 3 metres Raise crown 1 x Yew tree [T7] to 3 metres Reduce 1 x Tulip tree [T3] by approx 5 metres by phone lines and roof and raise crown to 3 metres Ginkgo tree [T6] to carry out any maintenance required to ensure tree health

    40 Handside Lane Welwyn Garden City AL8 6SJ

    Received 21 May 2020
  11. Decided - Granted6/2020/2799/EMT

    T1 Cyrpress to fell to ground level, remove all arisings and poison stump

    23 Oakdale Welwyn Garden City AL8 7QW

    Received 26 Oct 2020
  12. Decided - Granted6/2016/0523/LAWP

    Certificate of lawfulness for the installation of rear dormer hip to gable and 2no rooflights

    43 Holloways Lane, Welham Green, Hatfield, AL9 7NR

    Received 18 Mar 2016
  13. Decided - Granted6/2018/3051/PN8

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 2.75m in heights, 2.75m to the eaves

    35 Becket Gardens Welwyn AL6 9JE

    Received 27 Nov 2018
  14. Decided - Granted6/2020/0057/HOUSE

    Erection of single storey side garage and a single storey rear extension incorporating a conservatory

    62 Foxholes New Road Digswell Welwyn AL6 0AN

    Received 9 Jan 2020
  15. Decided - Granted6/2020/0182/COND

    Submission of details pursuant to condition 11 (acoustic report) on planning permission 6/2018/0737/FULL

    61 London Road Knebworth SG3 6JE

    Received 24 Jan 2020
  16. Decided - Granted6/2017/1424/FULL

    Construction of two all weather netball courts

    Queenswood School Shepherds Way Brookmans Park Hatfield AL9 6NS

    Received 30 Jun 2017
  17. Decided6/2023/2163/TC

    Reduce Silver Birch by 50% due to potential damage

    20 Birdcroft Road Welwyn Garden City AL8 6EQ

    Received 24 Oct 2023
  18. Appeal Decided - Allowed6/2021/0380/HOUSE

    Erection of front boundary wall, railings, piers and installation of entrance gate

    21 The Ridgeway Cuffley Potters Bar EN6 4BB

    Received 8 Feb 2021
  19. Decided - Refused6/2020/0001/PN8

    Prior approval for the erection of a single storey rear extension measuring 6.5m in depth, 3.2m in height and 3m to the eaves

    18 Pleasant Rise Hatfield AL9 5DS

    Received 30 Dec 2019
  20. Decided - Granted6/2021/2771/COND

    Submission of details pursuant to conditions 1 (cycle parking) and 2 (travel Plan) on planning application 6/2021/0552/FULL

    Unit 2 184 St Albans Road West Hatfield AL10 0TF

    Received 27 Sept 2021
  21. Decided - Granted6/2024/0881/HOUSE

    Erection of two storey front extension, part single, part 2-storey rear extension and alterations to roof with new rear dormers

    43 Bradgate Cuffley Potters Bar EN6 4RP

    Received 10 May 2024
  22. Decided - Refused6/2020/0948/PN8

    Prior approval for the erection of a single storey rear extension measuring 4.5 metres in depth, 4 metres in height and 4 metres to the eaves

    56 Springfields Welwyn Garden City AL8 6XN

    Received 27 Apr 2020
  23. Decided - Granted6/2025/1322/EM

    Replacement of original windows with woodgrain uPVC windows maintaining original style sashes, without trickle vents; like-for-like replacement of back gate

    53 Parkway Welwyn Garden City AL8 6JF

    Received 25 Jun 2025
  24. Decided - Granted6/2025/0244/EMT

    1 x Norway Maple to reduce by approximately 2.5m in height and 1.5m in width (back to previous). To maintain size and shape suitable for the area

    34 Heather Road Welwyn Garden City AL8 6XU

    Received 11 Feb 2025

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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