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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
20,134Searchable applications
298Recorded as pending
86%Approval rate · 16,272 approved or refused records
2,285Refused applications

13,987 approved · 2,285 refused · 1,019 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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. Decided - Granted6/2024/2095/COND

    Submission of details pursuant of condition 1 (details of external mechanical ventilation grille) on planning permission 6/2022/1261/LB

    14 Mill Lane Welwyn AL6 9ET

    Received 31 Oct 2024
  2. Decided - Withdrawn6/2024/1039/HOUSE

    Erection of a part single part two storey rear extension, ground and first floor side extensions, two storey front extension, stone portico front porch, roof alterations including a crown roof with 2x rear dormers, chimney removal x2 and increase in ridge height, garage conversion, fenestration and facade alterations

    32 Pine Grove Brookmans Park AL9 7BS

    Received 4 Jun 2024
  3. Decided - Granted6/2019/2319/EM

    Erection of front porch following demolition of existing porch, first floor rear extension to change existing dormer into a gable end and alterations to fenestration on existing side, front and rear elevations; to include changing of existing and proposed windows to aluminium in anthracite grey

    5 Old Forge Close Welwyn Hertfordshire AL6 0SR

    Received 19 Sept 2019
  4. Decided - Granted6/2025/1050/EM

    Erection of single storey rear extension, loft conversion with rear dormer and car port

    3 Roundwood Drive Welwyn Garden City AL8 7JZ

    Received 3 Jun 2025
  5. Decided - Granted6/2018/0424/COND

    Submission of details pursuant to condition 1 (materials samples) on planning permission 6/2017/2566/HOUSE

    9 Digswell House Mews Monks Rise Welwyn Garden City AL8 7AT

    Received 12 Feb 2018
  6. Decided - Refused6/2023/1150/HOUSE

    Removal of existing hipped roof and new gable ended roof built, including raising of roof height and chimney. Two rear dormers and one side conservation roof light

    48 Attimore Road Welwyn Garden City AL8 6LP

    Received 31 May 2023
  7. Decided - Granted6/2024/1436/HOUSE

    Erection of front portico with alterations to fenestration and demolition of existing front extension

    Wing 2 Warren Wood Kentish Lane Hatfield AL9 6JQ

    Received 30 Jul 2024
  8. Decided6/2019/2492/TPO

    Reduce 1 x Leylandii tree by 4.4m

    14 Roundwood Drive Welwyn Garden City AL8 7JZ

    Received 7 Oct 2019
  9. Decided - Granted6/2022/2217/LAWP

    Certificate of lawful development for the construction of an enlarged rear dormer with construction of two Juliette balconies

    32 Fulling Mill Lane Welwyn Hertfordshire AL6 9NS

    Received 26 Sept 2022
  10. Decided - Granted6/2024/1682/EM

    Erection of replacement single storey rear extension and new side extension

    3 West Mead Welwyn Garden City AL7 4SA

    Received 3 Sept 2024
  11. Decided - Granted6/2023/0968/EM

    Erection of garden room

    38 Barleycroft Road, Welwyn Garden City, AL8 6JU

    Received 9 May 2023
  12. Decided - Granted6/2023/0719/EM

    Erection of a part single, part two storey rear extension with insertion of roof lights to existing garage roof and proposed rear extension.

    123 The Commons, Welwyn Garden City, AL7 4RZ

    Received 30 Mar 2023
  13. Decided - Granted6/2020/3105/COND

    Submission of details pursuant to condition 1 (sound insulation) on planning permission 6/2020/0918/PN11

    36 Salisbury Square Hatfield AL9 5AF

    Received 23 Nov 2020
  14. Decided - Granted6/2018/0493/HOUSE

    Erection of single storey side extension by converting garage area into habitable space

    Just House Coopers Lane Northaw Potters Bar EN6 4NJ

    Received 20 Feb 2018
  15. Decided - Granted6/2018/2639/PN8

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 4m in height and 3m to the eaves

    105 The Commons Welwyn Garden City AL7 4RZ

    Received 15 Oct 2018
  16. Decided - Granted6/2020/3454/COND

    Submission of details pursuant to conditions 1 (materials) 2 (crown roof), 3 (hard and soft landscape), 4 (landscaping seasons) and 5 (glazing) on planning permission 6/2020/1767/FULL

    154 Tolmers Road Cuffley Potters Bar EN6 4JR

    Received 24 Dec 2020
  17. Decided - Refused6/2022/1354/PN15

    Prior approval for the installation of a 15m height slim line phase 9 monopole with 3no. additional ancillary equipment cabinets and associated ancillary works

    Newfields Handside Lane Welwyn Hertfordshire AL8 6TD (area of existing grass located off Handside Lane, close to the junction with Newfields)

    Received 10 Jun 2022
  18. Decided - Granted6/2023/1838/EMT

    Hornbeam hedge to re-pollard to previous points by 25-35%.

    2 Elmwood Welwyn Garden City AL8 6LE

    Received 4 Sept 2023
  19. Decided6/2022/0350/TC

    1 x Cherry to reduce by approximately 2.5m height & 1.5m width. Lift to 4m above ground level. Client wishes to reduce the tree back to its previous size 3-4 years back.

    25 Rooks Hill Welwyn Garden City AL8 6EU

    Received 14 Feb 2022
  20. Decided - Granted6/2021/2721/COND

    Submission of details pursuant to condition 1 (materials) on planning permission 6/2021/0461/HOUSE

    53 Mardley Hill Welwyn AL6 0TT

    Received 20 Sept 2021
  21. Decided - Granted6/2021/2561/HOUSE

    Erection of a single storey side extension, and insertion of 2 x dormers and 4 x rooflights to loft space.

    19 Northaw Road East Cuffley Potters Bar EN6 4LU

    Received 2 Sept 2021
  22. Decided - Granted6/2026/0781/HOUSE

    Garage conversion and erection of front porch

    9 Kerdistone Close Little Heath Potters Bar EN6 1LG

    Received 5 May 2026
  23. Decided6/2025/1708/TC

    Removal of dead Cypress tree and replacement with hedgerow to match existing

    27 Russellcroft Road Welwyn Garden City AL8 6QX

    Received 8 Aug 2025
  24. Decided6/2022/1013/TC

    Plum tree x2 and Elm tree x1 - Reduce down to 8ft approximately to prevent/deter birds from dropping their waste into the garden where the clients young child plays

    10 Birdcroft Road Welwyn Garden City AL8 6EQ

    Received 29 Apr 2022

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

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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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