PlanningTrack
Get started

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
31,725Searchable applications
303Recorded as pending
87%Approval rate · 26,494 approved or refused records
3,473Refused applications

23,021 approved · 3,473 refused · 1,675 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/2019/FULL

    Replacement of existing steel windows on first and second floor with new aluminium windows. Replacement of existing ground floor entrance door on Parkway elevation.

    Fountain House 1-7 Howardsgate Welwyn Garden City

    Received 11 Sept 2017
  2. Decided6/2022/2483/TC

    Oak T1 - reduce tree by up to 3 metres to take it back to previous pruning points.

    11 Woodland Rise Welwyn Garden City AL8 7LJ

    Received 31 Oct 2022
  3. Decided - GrantedN6/2014/2502/DS

    Approval of details reserved by condition 4 (materials), 5 (working access) and 6 (protection of trees) of N6/2014/1936/FP

    1 The Jinnings, Welwyn Garden City, AL7 4QB

    Received 14 Nov 2014
  4. Decided - GrantedN6/2013/2095/TC

    Removal of overhanging branch on Silver birch tree

    10 Coneydale, Welwyn Garden City, AL8 7RZ

    Received 19 Sept 2013
  5. Decided - Withdrawn6/2016/2331/HOUSE

    Conversion of loft to habitable space

    106A College Lane Hatfield AL10 9PA

    Received 7 Nov 2016
  6. Decided - GrantedN6/2013/2672/LUE

    Certificate of lawful use for the retention of a detached single storey outbuilding in the grounds of 2 Whitehill for the continued use for the storage of unused household furniture, domestic goods and paraphernalia and gardening tools, equipment and seeds in connection with the occupation and enjoyment of No 2 Whitehill

    2 Whitehill, Ayot St Peter, Welwyn, AL6 9AF

    Received 6 Dec 2013
  7. Decided - Granted6/2022/0314/PN27

    Enlargement of a dwelling house by construction of additional storey

    2 Whitehill Ayot St Peter Welwyn AL6 9AF

    Received 10 Feb 2022
  8. Decided - Granted6/2022/0721/EM

    Erection of new summerhouse/shed to replace old shed

    36 Howicks Green, Welwyn Garden City, AL7 4RH

    Received 28 Mar 2022
  9. Decided6/2020/0231/TC

    Fell 1 x Norway Spruce Pine Tree

    1 Marsden Road Welwyn Garden City AL8 6YQ

    Received 28 Jan 2020
  10. Decided - Granted6/2017/2285/EM

    Installation of rear dormer window to facilitate loft conversion and installation of window to side elevation

    11 Linces Way Welwyn Garden City AL7 3JN

    Received 5 Oct 2017
  11. Appealed6/2026/0572/HOUSE

    Erection of a part double storey front extension - part double storey rear extension with inset balconies - 0.8m increase in ridge height and installation of solar panels. Conversion of existing garage with pitched roof over. Erection of outbuilding to accommodate indoor pool and sauna. Alterations to materials and fenestration and associated internal alterations

    23 The Ridgeway Cuffley Potters Bar EN6 4BB

    Received 30 Mar 2026
  12. Decided - GrantedN6/2014/0010/FP

    Erection of two storey side extension

    58 Crossway, Welwyn Garden City, AL8 7EE

    Received 6 Jan 2014
  13. Decided - Refused6/2019/1272/PN8

    Prior approval for the erection of a single storey rear extension measuring 5.5m in depth, 3.0m in height and 2.8m to the eaves

    39 High Dells Hatfield AL10 9JD

    Received 24 May 2019
  14. Decided - GrantedW6/2013/1696/TE

    Fell Ash, Cherry and Sycamore tree plus cut back small tree from parking area

    Knightsfield Dental Practice, 171 Knightsfield, Welwyn Garden City, AL8 7QG

    Received 16 Aug 2013
  15. Decided - Granted6/2023/1148/HOUSE

    Erection of rear outbuilding with basement following the demolition of existing outbuilding

    3 Tolmers Avenue Cuffley Potters Bar EN6 4QE

    Received 31 May 2023
  16. Decided - GrantedW6/2014/1161/TE

    Removal of Sycamore tree

    4 Handside Close, Welwyn Garden City, AL8 6SR

    Received 27 May 2014
  17. Decided - Granted6/2019/2113/TPO

    T1 - Reduce 1 x Ash by 1m over carpark covered by TPO327 T1 T2 - Reduce 1 x Ash by 1m over carpark TPO327 T2

    1 Gloucester Court Hatfield AL10 0UT

    Received 27 Aug 2019
  18. Decided6/2026/1187/TC

    Ground works and associated root pruning/ severance of T1 oak to facilitate installation of a root barrier 15m in length and 3.5m in depth.

    85 Pentley Park Welwyn Garden City AL8 7SL

    Received 8 Jul 2026
  19. Decided - Granted6/2021/1350/LAWP

    Certificate of lawfulness for the erection of two storey rear extension

    Spindlebury Cottage Ottway Walk Welwyn AL6 9AS

    Received 27 Apr 2021
  20. Decided - Granted6/2021/3161/EMH

    Erection of single storey rear extension following the demolition of existing rear conservatory and partial demolition of existing rear extension

    15 Thumbswood Welwyn Garden City AL7 4QE

    Received 4 Nov 2021
  21. Decided - Granted6/2016/1920/EM

    Thin Mulberry tree and Medlar tree crowns by 15% and reduce height and spread by 1.5m plus thin Whitebeam tree crown by 10% and reduce height and spread by upto 2-4m

    21 High Oaks Road, Welwyn Garden City, AL8 7BJ

    Received 9 Sept 2016
  22. Decided - Granted6/2020/2900/HOUSE

    Part conversion and proposed single storey rear extension of existing garage with insertion of roof lights

    3 Wilkins Green Lane Hatfield AL10 9RT

    Received 6 Nov 2020
  23. Decided - Granted6/2016/0536/COND

    Approval of details reserved by condition 3 (windows and doors) on planning permission 6/2015/2199/HOUSE

    The Old Cottage, Green Lanes, Hatfield, AL10 9BH

    Received 31 Mar 2016
  24. Decided - Granted6/2023/1455/PN8

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3.35m in height and 2.5m to the eaves

    3 Park Road Northaw Potters Bar EN6 4NU

    Received 13 Jul 2023

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.

    UK research
    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.

    UK research
    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.

Check collection coverage

More planning authorities in England

Browse all authorities