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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
22,476Searchable applications
293Recorded as pending
86%Approval rate · 18,276 approved or refused records
2,585Refused applications

15,691 approved · 2,585 refused · 1,162 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/2701/HOUSE

    Erection of a single storey front extension

    2 Bishops Close Hatfield AL10 9PW

    Received 21 Nov 2017
  2. Decided - Granted6/2020/2057/LAWE

    Certificate of lawfulness for the existing use as HMO for 4 tenants.

    10 Broom Close Hatfield AL10 9DL

    Received 14 Aug 2020
  3. Decided - Granted6/2024/1908/LAWP

    Certificate of lawfulness for a proposed loft conversion with rear dormer and insertion of two rooflights to the front roofslope, following the removal of chimney

    1 Cedar Road Hatfield AL10 8NZ

    Received 4 Oct 2024
  4. Decided - Granted6/2021/0412/EM

    Replacement of front door and change of driveway surface material

    1 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 9 Feb 2021
  5. Decided6/2020/0383/TC

    Fell 1x Elder tree

    24 Walden Road Welwyn Garden City AL8 7PF

    Received 10 Feb 2020
  6. Decided - Granted6/2019/0894/HOUSE

    Erection of a two storey side, single storey rear extension.

    2 Cedar Road Hatfield AL10 8PA

    Received 12 Apr 2019
  7. Decided - Granted6/2017/0236/COND

    Approval of details reserved by condition 15 (landscaping) on planning permission N6/2011/0359/OP

    Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ

    Received 9 Feb 2017
  8. Decided - Refused6/2017/2511/EM

    Erection of a single storey side and rear, first floor side and two storey rear extensions. Installation of first floor side window and ground floor rear doors.

    41 Valley Road Welwyn Garden City AL8 7DH

    Received 27 Oct 2017
  9. Decided - Refused6/2018/1992/LAWP

    Certificate of lawfulness for the internal connection between no 87 and 89 at ground floor and 1st floor level via doorways

    87-89 Harmer Green Lane Digswell Welwyn AL6 0ER

    Received 30 Jul 2018
  10. Decided - Granted6/2019/0983/EM

    Erection of Single Storey Rear Extension

    45 Summer Dale Welwyn Garden City AL8 7QH

    Received 16 Apr 2019
  11. Decided - Granted6/2018/1489/COND

    Submission of details pursuant to condition 1 (material samples), 2a (hard and soft landscape plans showing levels), 2b (enclosure and boundary treatments), 2c (car parking), 2d (access), 2e (hard surfacing), 2g (planting plans), 2i (siting and timing details) and 2j (management details) on planning permission 6/2016/2706/MAJ

    Ponsbourne Grange Ponsbourne Park Newgate Street Hertford SG13 8QS

    Received 4 Jun 2018
  12. Decided - Granted6/2017/0931/MAJ

    Erection of retail pod

    Morrison Supermarket 40 Black Fan Road Welwyn Garden City AL7 1RY

    Received 4 May 2017
  13. Decided - Granted6/2017/2032/HOUSE

    Erection of first floor side extension and single storey, part two storey rear extension

    12 Cranborne Road Hatfield AL10 8AP

    Received 12 Sept 2017
  14. Decided - Granted6/2025/1607/EMT

    T1 x Hawthorn to reduce to around hedge height, leaving only the trunk in place. Reduce canopy to standing trunk to allow new canopy development

    11 Mannicotts Welwyn Garden City AL8 7BW

    Received 25 Jul 2025
  15. Decided - Withdrawn6/2023/0640/HOUSE

    Installation of bay window

    20 East Mead Welwyn Garden City AL7 4RR

    Received 22 Mar 2023
  16. Decided - Withdrawn6/2026/0401/FULL

    Change of use to incorporate use classes E, F1 and F2

    Unit 1 Swallow Court Swallowfields Welwyn Garden City AL7 1SB

    Received 4 Mar 2026
  17. Decided - Granted6/2022/2919/HOUSE

    Conversion of existing garage/fitness room building to form a first floor annexe, including raising height of eaves, external access stairs and dormer windows

    Sawmill Cottage Waterend Lane Ayot St Peter Welwyn AL6 9BB

    Received 29 Dec 2022
  18. Decided - Granted6/2025/0820/EM

    Minor amendement to approved application 6/2024/0470/EM - Raising of parapet walls and garage roof

    44 Longcroft Lane Welwyn Garden City AL8 6EF

    Received 29 Apr 2025
  19. Under Consideration6/2026/1475/EM

    Replacement of wooden 'garage' (only been used for storage) with a similar size wooden shed in the same location. The wooden garage is 6.3m x 2.75m. The proposed shed will be 6m x 3m.

    9 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 20 Aug 2026
  20. Decided - Granted6/2019/0748/LAWE

    Certificate of lawfulness for the existing use of buildings as stables, for the keeping of recreational horses and kennels for the keeping of dogs, solely used by occupiers of Tylersley Farm

    Tylersley Farm Tylers Causeway Newgate Street Hertford SG13 8QN

    Received 29 Mar 2019
  21. Decided - Refused6/2023/2104/COND

    Submission of details pursuant to Condition 1 (details of proposed crown roof) on planning permission 6/2022/2687/HOUSE

    27 Westland Drive Hatfield AL9 7UG

    Received 17 Oct 2023
  22. Decided - Granted6/2026/1218/LAWP

    Certificate of lawfulness for rear dormer roof extension to form a loft conversion

    43 Great Ley Welwyn Garden City AL7 4TJ

    Received 13 Jul 2026
  23. Decided - Granted6/2024/2260/COND

    Submission of details pursuant of condition 2 (swift nesting bricks, bird boxes and bat boxes), condition 3 (samples of the materials), condition 4 (solar panels), condition 5 (refuse and recycling storage), condition 6 (cycle parking storage) and condition 8 (balustrade/privacy screen) on planning permission 6/2023/2539/FULL

    Sylvia Adams House 24 The Common Hatfield AL10 0ND

    Received 25 Nov 2024
  24. Decided - Granted6/2017/1415/HOUSE

    Erection of single storey rear extension

    8 Attimore Road Welwyn Garden City AL8 6LW

    Received 28 Jun 2017

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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    Published Updated

  • 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.

    UK research
    Published Updated

  • 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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    Published Updated

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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