PlanningTrack
Get started

England · Local authority

Welwyn Hatfield planning applications

PlanningTrack collects planning applications and decisions from the public planning register of Welwyn Hatfield Borough Council. Search an address, application reference or proposal. Official Welwyn Hatfield website

Collected application statistics

Collected records · All available dates
40,297Searchable applications
283Recorded as pending
86%Approval rate · 33,821 approved or refused records
4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 8 Nov 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedW6/2009/1170/EM

    ERECTION OF SUMMERHOUSE IN REAR GARDEN

    9 BARLEYCROFT GREEN, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6JY

    Received 2 Jun 2009
  2. Decided - GrantedS6/2004/0316/FP

    ERECTION OF SINGLE STOREY SIDE EXTENSION

    75 Hawkshead Lane North Mymms Hatfield AL9 7SZ

    Received 1 Mar 2004
  3. Decided - Split6/2023/1437/COND

    Submission of details pursuant of condition 3 (privacy screens), condition 4 (archaeological written scheme of investigation), condition 9 (details of a scheme for the installation of swift nesting bricks, bird boxes and bat boxes) on planning permission 6/2021/3367/MAJ

    Ludwick Green Ludwick Way Welwyn Garden City AL7 3QN

    Received 11 Jul 2023
  4. Decided - Granted6/2021/1471/EMT

    Reduce beech tree by 30% and trim lime tree back to previous cuts

    30 Youngs Rise Welwyn Garden City AL8 6RU

    Received 10 May 2021
  5. Decided - GrantedN6/2009/1152/TE

    REDUCTION OF TREES LOCATED ALONG DRIVEWAY AND REDUCTION OF TREES LOCATED IN REAR GARDEN

    54 SHERRARDSPARK ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7LB

    Received 18 May 2009
  6. Decided - Granted6/2024/0652/EM

    Installation of a Solar PV system, on both the North and South facing roofs, utilising an in-roof system

    7 Archers Ride Welwyn Garden City AL7 4PR

    Received 5 Apr 2024
  7. Decided - Granted6/2018/3168/COND

    Submission of details pursuant to condition 2 (External materials of proposed Balconies and Roof) on approved planning ref 6/2017/1573/FULL

    1- 45 Corners Welwyn Garden City AL7 1RL

    Received 12 Dec 2018
  8. Decided - GrantedN6/2013/0307/TE

    Removal of Ash tree and reduce Hornbeam tree by 35%

    5 Redwoods, WELWYN GARDEN CITY, AL8 7NR

    Received 12 Feb 2013
  9. Decided - Granted6/2015/1617/FULL

    Erection of dwelling following demolition of existing dwelling

    3 Minster Close Hatfield AL10 9JN

    Received 30 Jul 2015
  10. Decided - Withdrawn6/2017/1954/EM

    Erection of a single storey rear extension

    37 Lodgefield Welwyn Garden City AL7 1SD

    Received 31 Aug 2017
  11. Decided - GrantedS6/2015/0305/HH

    Prior approval for the erection of a single storey rear extension

    113 Heathcote Avenue Hatfield AL10 0RL

    Received 13 Feb 2015
  12. Decided - Granted6/2024/1499/EM

    Removal of grass and hedge and installation of driveway with new hedge replaced down the side of drive

    34 Middlefield Welwyn Garden City AL7 4DJ

    Received 7 Aug 2024
  13. Decided - GrantedS6/2004/0708/FP

    INSTALLATION OF AUTOMATIC TELLER MACHINE TO FRONT ELEVATION.

    Co-operative Retail Services Ltd 19 - 23 Station Road Cuffley Potters Bar EN6 4HX

    Received 10 May 2004
  14. Decided - GrantedN6/2014/0301/FP

    Erection of first floor rear extension and installation of side dormer window

    28 Mardley Hill Welwyn AL6 0TS

    Received 11 Feb 2014
  15. Decided - Granted6/2022/2092/EMT

    1 x Silver birch to reduce width by approximately 2m 1 x Holly to fell to ground level 1 x Hazel to reduce height by approximately 2.5m. Lift to 2m 1 x Cherry plum to reduce by 2m in height, reduce overlong lateral limb by approximately 2.5m to create a balanced crown.

    7 High Oaks Road Welwyn Garden City AL8 7BJ

    Received 7 Sept 2022
  16. Decided - Granted6/2015/1821/TC

    Removal of Conifer tree and two Leylandii trees

    7 The Pastures, Welwyn Garden City, AL7 4PX

    Received 26 Aug 2015
  17. Decided6/2021/2774/TC

    Fell 1 x Silver Birch and 1 x Cider Gum tree covered by conservation area

    25 Sheepcote Welwyn Garden City AL7 4QA

    Received 27 Sept 2021
  18. Decided - Split6/2025/2079/COND

    Submission of details pursuant to condition number 1 (Demolition and Construction Management Plan), 2 (Archaeological Written Scheme of Investigation), 6 (Habitat Management and Monitoring Plan), 7 (Material Samples), 8 (Details of the proposed swift / house martin nesting bricks and bat access tiles and bird boxes), 9 (Hard and Soft Landscaping), 15 (Cycle Storage), 20 (Surface Water Drainage Scheme) and 21 (Construction Phase Surface Water Management Plan) on planning permission 6/2024/2088/FULL

    9 Wendover Lodge Church Street Welwyn AL6 9LR

    Received 30 Sept 2025
  19. Decided - Granted6/2019/1056/HOUSE

    Erection of a two storey side extension, single storey side and rear extensions, roof extension and front porch.

    53 Mardley Hill Welwyn AL6 0TT

    Received 1 May 2019
  20. DecidedN6/2015/0219/NM

    Non material amendment following approval of planning permission N6/2013/2581/FP - Change roof over the Two new windows of the first floor extension, situated on the North West elevation from a flat roof to two individual tiled dormer windows.

    5 Holly Road Woolmer Green Knebworth SG3 6LL

    Received 3 Feb 2015
  21. Decided - GrantedN6/2014/0077/DS

    Discharge of condition 3 (Materials) & 4 (Hard & Soft Landscaping) of planning permission N6/2013/1508/FP

    BP Oil UK Ltd, Welwyn By Pass, London Road, Welwyn, AL6 9HX

    Received 7 Jan 2014
  22. Decided - Granted6/2017/0523/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.5m in depth, 3.3m in height and 3m to the eaves.

    36 Frampton Road Little Heath Potters Bar EN6 1JE

    Received 13 Mar 2017
  23. Decided - Granted6/2025/2438/LAWP

    Certificate of lawfulness for loft conversion with rear dormer, rooflights, removal of chimney stacks and changes to fenestration

    4 Plough Hill Cuffley Potters Bar EN6 4DR

    Received 21 Nov 2025
  24. Decided - Granted6/2015/2462/LAWP

    Certificate of lawfulness for a loft conversion with rear dormer, hipped roof to gable, front roof lights and SVP extension

    393 St Albans Road West, Hatfield, AL10 9RU

    Received 14 Dec 2015

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Applications by postcode area

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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