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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
32,996Searchable applications
313Recorded as pending
87%Approval rate · 27,617 approved or refused records
3,600Refused applications

24,017 approved · 3,600 refused · 1,731 withdrawn. Received dates in our records: 29 Apr 1948 to 14 Oct 2026. Most recent record check: 21 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/0755/FULL

    Erection of single storey glasshouse and associated single storey plant growth room

    University Of Hertfordshire, College Lane Campus College Lane Hatfield Hertfordshire AL10 9AB

    Received 29 Mar 2022
  2. Decided - Granted6/2025/2149/COND

    Submission of details pursuant to Condition 28 (verification report) on planning permission 6/2022/1375/MAJ

    Land at Hollybush Lane to the east of A1000 and north of Ascots Lane Welwyn Garden City AL7 4EG

    Received 8 Oct 2025
  3. Decided - Refused6/2017/1086/HOUSE

    Erection of a two storey rear extension

    44 Longcroft Lane Welwyn Garden City AL8 6EF

    Received 19 May 2017
  4. Decided - Granted6/2022/0873/HOUSE

    Erection of a single storey side and rear extension, and insertion of window within front elevation to facilitate conversion of garage into habitable space

    28 Bluebell Way Hatfield Hertfordshire AL10 9FJ

    Received 12 Apr 2022
  5. Decided - GrantedS6/2014/1268/FP

    Erection of first floor rear extension, installation of rear dormer and hip-to-gable roof alteration

    34 Green Lanes Hatfield AL10 9JU

    Received 5 Jun 2014
  6. Decided - GrantedN6/2014/1861/FP

    Erection of first floor rear extension with rooflight and installation of part lean to roof on existing ground floor extension with roof light

    97 Hillyfields, Welwyn Garden City, AL7 2EA

    Received 19 Aug 2014
  7. Decided - Granted6/2020/2960/EMT

    Reduce 1 x Hornbeam [T1] back to previous reduction points

    6 Holly Walk Welwyn Garden City AL8 7EJ

    Received 11 Nov 2020
  8. Decided - Granted6/2026/1228/HOUSE

    Erection of single storey front extension

    109 Mount Way Welwyn Garden City AL7 4LA

    Received 13 Jul 2026
  9. Decided - Granted6/2018/3282/LAWP

    Certificate of lawfulness for loft conversion

    3 Sovereign Place Hatfield AL9 6ET

    Received 27 Dec 2018
  10. Decided - Refused6/2020/3026/PN30

    Prior approval for the upward extension of a terraced building to create an additional dwelling

    6 Hillside Hatfield AL10 8HQ

    Received 16 Nov 2020
  11. Decided - Granted6/2016/1506/PN8

    Prior approval for the erection of single storey flat roof rear extension measuring 6m. in depth, 2.9m. in length and 2.5m. to the eaves

    453 Howlands, Welwyn Garden City, AL7 4HP

    Received 22 Jul 2016
  12. Decided - Granted6/2016/0054/PN8

    Prior approval for erection of single storey rear extension measuring 4m deep by 2.796m high

    7 Poundwell, Welwyn Garden City, AL7 3NP

    Received 14 Jan 2016
  13. Decided - Granted6/2020/2515/TPO

    Reduce 1 x Ash Tree(T1) by 8ft

    83 Moffats Lane Hatfield AL9 7RT

    Received 30 Sept 2020
  14. Appeal Decided - Dismissed6/2018/1096/EM

    Installation of solar panels on the roof - retrospective

    37 Linkfield Welwyn Garden City AL7 4DN

    Received 26 Apr 2018
  15. Decided - Granted6/2022/0439/EMT

    Fell 5 x Leyland Cypress

    17 The Valley Green Welwyn Garden City AL8 7DQ

    Received 24 Feb 2022
  16. Decided - Refused6/2024/2391/LB

    Erecting a single storey rear extension incorporating a flat roof roof-light and a pitch roof dormer to the existing double storey rear extension with alterations to existing gable roof and rear windows

    10 Ayot Green Ayot St Peter Welwyn AL6 9AB

    Received 17 Dec 2024
  17. Decided - GrantedN6/2014/2205/FP

    Erection of a single storey side extension following demolition of existing conservatory

    81 Caponfield, Welwyn Garden City, AL7 4AW

    Received 6 Oct 2014
  18. Decided - GrantedS6/2012/2553/NM

    Non material amendment following approval of planning permission S6/2012/1213/FP - Variation of finishes

    12 Cranmer Close, Little Heath, POTTERS BAR, EN6 1LB

    Received 6 Dec 2012
  19. Decided - Granted6/2019/0431/EM

    Erection of boundary fence measuring 6ft following removal of hedge

    15 Barn Close Welwyn Garden City AL8 6ST

    Received 26 Feb 2019
  20. Decided - Granted6/2026/0961/EMT

    T1 Goat Willow to fell to stump level as it is dying/dead. T2 Conifer hedge to fell.

    10 Howicks Green, Welwyn Garden City, AL7 4RH

    Received 1 Jun 2026
  21. Decided - Granted6/2019/1799/LAWP

    Certificate of lawfulness for the erection of 2x outbuildings for the use of gym and swimming pool

    29 The Ridgeway, Cuffley, Potters Bar, EN6 4BB

    Received 22 Jul 2019
  22. Decided - Granted6/2026/1376/HOUSE

    Erection of a single storey ground floor extension & part two storey rear, raising the roof and alterations to facilitate loft conversion to include new crown roof with front & rear dormers

    18 Briary Wood Lane Welwyn AL6 0TF

    Received 4 Aug 2026
  23. Decided - Granted6/2023/0740/EM

    Installation of solar panels to roof

    12 Corn Mead Welwyn Garden City AL8 7QR

    Received 3 Apr 2023
  24. Decided - Refused6/2018/2549/LAWP

    Certificate of lawfulness for the erection of rear single storey extension

    35A Plough Hill Cuffley Potters Bar EN6 4DW

    Received 3 Oct 2018

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

    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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