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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
31,241Searchable applications
303Recorded as pending
87%Approval rate · 26,056 approved or refused records
3,424Refused applications

22,632 approved · 3,424 refused · 1,654 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 19 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 Counts reflect the last collected status; some records may be out of date.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 - RefusedS6/2014/0745/FP

    Erection of two storey and single storey side extensions following demolition of existing garage/store and construction of porch

    8 Poplar Avenue, Hatfield, AL10 9SF

    Received 2 Apr 2014
  2. Decided - Granted6/2019/1102/FULL

    Installation of ATM to existing retail unit

    14 High Street Welwyn AL6 9EQ

    Received 8 May 2019
  3. Decided - Refused6/2019/1875/LAWP

    Certificate of lawfulness for the erection of single storey outbuilding

    18A London Road Woolmer Green Knebworth SG3 6JP

    Received 31 Jul 2019
  4. Decided - Granted6/2019/0290/LAWE

    Certificate of lawfulness to confirm implementation of planning permission: N6/2012/1654/OP

    Land to the rear of Unit D Watchmead City Park Welwyn Garden City AL7 1LT

    Received 8 Feb 2019
  5. Decided - Granted6/2018/1376/EM

    Reduce crown of Oak tree by 25%

    11 Woodland Rise Welwyn Garden City AL8 7LJ

    Received 18 May 2018
  6. Appeal Decided - DismissedN6/2015/0817/FP

    Erection of 4no detached dwellings with associated car parking and landscaping following demolition of existing 2no dwellings

    10 Oaklands Rise Welwyn AL6 0RN

    Received 14 Apr 2015
  7. DecidedN6/2014/1291/TC

    Removal of Conifer tree

    14 & 16 Green Acres, Welwyn Garden City, AL7 4LJ

    Received 11 Jun 2014
  8. Under Consideration6/2026/1019/COND

    Submission of details pursuant to condition number 1 (Arboricultural Impact Statement, Arboricultural Method Statement and Tree Protection Plan) and 4 (electric vehicle charger) on planning permission 6/2026/0105/HOUSE

    60 Brookmans Avenue Brookmans Park AL9 7QQ

    Received 10 Jun 2026
  9. DecidedN6/2015/0359/TC

    Reduce Walnut tree and Conifer tree crown by 30%

    38 Barleycroft Road, Welwyn Garden City, AL8 6JU

    Received 23 Feb 2015
  10. Decided - Granted6/2020/1412/EM

    Extension and replacement of hardstanding

    3 High Grove Welwyn Garden City AL8 7DW

    Received 18 Jun 2020
  11. Decided - Granted6/2022/1344/HOUSE

    Erection of single storey rear and side extensions

    21A Canonsfield Welwyn AL6 0QB

    Received 10 Jun 2022
  12. Decided - Refused6/2016/1067/FULL

    Erection of storage building following demolition of existing structures

    Oshwal Centre, Coopers Lane Road, Northaw, Potters Bar, EN6 4DG

    Received 31 May 2016
  13. Decided - GrantedN6/2015/0709/FP

    Proposed Silos

    SIKA Ltd, Watchmead, Welwyn Garden City, AL7 1BQ

    Received 31 Mar 2015
  14. Decided - Refused6/2015/1993/HOUSE

    Extension of block paving to front of property

    5 Sylvandale, Welwyn Garden City, AL7 2HP

    Received 28 Sept 2015
  15. Decided - Granted6/2017/1947/LAWP

    Certificate of Lawfulness for installation of a dormer window, 2x rooflights and a hip to gable extension to facilitate loft conversion to habitable space

    33 Bramble Road Hatfield AL10 9RZ

    Received 31 Aug 2017
  16. Decided - Granted6/2024/0426/EM

    Replacement - like for like of all existing windows and rear French doors of main house. Visually the same ie. Art Deco Heritage Style in white

    2 Woodland Rise Welwyn Garden City AL8 7LF

    Received 4 Mar 2024
  17. Decided - Granted6/2019/0535/HOUSE

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

    50 Marley Road Welwyn Garden City AL7 4BS

    Received 8 Mar 2019
  18. Decided - Withdrawn6/2019/2657/TC

    Reduce 1 x Ash tree crown by 2m

    69 Sweet Briar Welwyn Garden City AL7 3EB

    Received 22 Oct 2019
  19. Decided - Granted6/2019/1915/EM

    Reduce 2x Lime tree by 33%

    6 Dognell Green Welwyn Garden City AL8 7BL

    Received 5 Aug 2019
  20. Decided - Granted6/2016/1646/FULL

    Minor alterations and repairs to existing barn and a new adjoining kitchen. Use of barns as occasional habitable space ancillary to residential occupation of Great Nast Hyde House.

    Great Nast Hyde House, Wilkins Green Lane, Hatfield, AL10 9RB

    Received 11 Aug 2016
  21. Decided - Granted6/2022/0807/HOUSE

    Erection of new portico to front elevation, removal of canopy and replacement of door with window on side elevation

    39 Pine Grove Brookmans Park Hertfordshire AL9 7BL

    Received 1 Apr 2022
  22. Decided6/2024/0777/TC

    Fell a birch tree

    5 Palmerston Close Welwyn Garden City AL8 7DL

    Received 25 Apr 2024
  23. Decided - Granted6/2017/1044/HOUSE

    Erection of single storey side extension at ground level following the demolition of existing store

    85 King James Avenue Cuffley Potters Bar EN6 4LW

    Received 17 Jul 2017
  24. Decided - Granted6/2017/1509/ADV

    Installation of 2 x internally illuminated fascia signs and 1 x non-illuminated projecting sign

    HSBC Howardsgate Welwyn Garden City AL8 6BH

    Received 11 Jul 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

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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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