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
39,862Searchable applications
298Recorded as pending
86%Approval rate · 33,422 approved or refused records
4,778Refused applications

28,644 approved · 4,778 refused · 2,186 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 28 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2020/2510/LAWE

    Certificate of lawfulness for the existing use of former agricultural barn as a B8: Storage and Distribution warehouse for a period of more than 10-years.

    Land parcel east of Newgate Street

    Received 30 Sept 2020
  2. Decided - GrantedN6/2013/2237/FP

    Erection of single storey rear extension and associated alterations, new boundary fencing and new garden shed

    2 Barleycroft Green, Welwyn Garden City, AL8 6JY

    Received 23 Oct 2013
  3. Decided - Refused6/2020/3389/HOUSE

    Erection of a first floor side extension

    18 Mardley Hill Welwyn AL6 0TN

    Received 18 Dec 2020
  4. Decided - Granted6/2024/1634/EM

    Replacement of existing privet hedge at the property front boundary. The hedge is approximately 18m long (in 2 sections) and 1.5m high. The privet is dying (honey fungus) - already around 80% of the privet plants are dead. The hedge now consists of diseased/dead privet, holly and diverse weeds. We propose to remove the existing hedge and replace it with beech (bare roots, planting in autumn-winter) to avoid the spread of honey fungus

    19 Valley Road Welwyn Garden City AL8 7DH

    Received 27 Aug 2024
  5. Decided - Granted6/2017/0741/EM

    Removal of x 1 Acer tree

    Land adjacent to 1 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 12 Apr 2017
  6. Decided - RefusedW6/2009/2543/EM

    ERECTION OF SINGLE STOREY SIDE/REAR, TWO STOREY REAR EXTENSION AND INSERTION OF ROOF LIGHTS

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

    Received 16 Nov 2009
  7. Decided - Granted6/2021/1713/LAWP

    Certificate of lawfulness for a conversion of garage into a habitable room and alteration to porch steps.

    14 Peplins Way Hatfield AL9 7UU

    Received 28 May 2021
  8. Decided - RefusedS6/2009/2372/FP

    ERECTION OF BOUNDARY WALL AND GATES TO THE FRONT OF THE PROPERTY AND ERECTION OF FIRST FLOOR REAR EXTENSION

    35 ST ALBANS ROAD EAST, HATFIELD, HERTFORDSHIRE, AL10 0EJ

    Received 19 Oct 2009
  9. Decided - Granted6/2021/0650/LAWP

    Certficate of lawfulness for the erection of an outbuilding

    Mill Green, The Laurels Bush Hall Lane Hatfield AL9 5NZ

    Received 1 Mar 2021
  10. Decided - Refused6/2018/0024/HOUSE

    Demolition of existing carport and erection of single storey side extension, first floor side extension and loft conversion with rear facing roof lights.

    81 Hertford Road Digswell Welwyn AL6 0BU

    Received 4 Jan 2018
  11. Decided - GrantedN6/2009/1708/FP

    ERECTION OF PITCHED ROOF TO GARAGE

    4 Blakes Way Welwyn AL6 9RE

    Received 6 Aug 2009
  12. Decided - Refused6/2025/0004/HOUSE

    Erection of single storey side and rear extension

    42 Heron Way Hatfield AL10 8QX

    Received 2 Jan 2025
  13. Decided - Refused6/2017/1207/LAWP

    Certificate of lawfulness for a single storey rear extension following Prior Notification Approval

    288 Bishops Rise Hatfield AL10 9QT

    Received 1 Jun 2017
  14. Decided - Granted6/2021/1613/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.5m in depth, 2.9m in height and 2.9m to the eaves.

    30 Frampton Road Little Heath Potters Bar EN6 1JE

    Received 20 May 2021
  15. Decided - Granted6/2023/0673/HOUSE

    Erection of single storey rear extension

    5 Broadleaf Grove Welwyn Garden City AL8 7AZ

    Received 27 Mar 2023
  16. Decided - GrantedN6/2013/1670/DS

    Discharge of conditions 4 (landscaping), 5 (tree protection methods), 7 (archaeological written scheme), 8 (surface water drainage), 9 (cross sections), 10 (refer to construction method statement), 11 (car parking) and 14 (refuse bins) of planning permission N6/2012/2190/S73A

    land at, 18 London Road, Welwyn, AL6 9HZ

    Received 26 Jul 2013
  17. Decided - WithdrawnN6/2008/1664/FP

    ERECTION OF TWO STOREY SIDE EXTENSION

    Holly Lodge 5B Roundabout Lane Welwyn AL6 0TH

    Received 21 Aug 2008
  18. Decided - Granted6/2023/1326/FULL

    Installation of 4 new condenser units to the rear elevation, rear elevational alterations and shop front alterations

    38-40 Fretherne Road Welwyn Garden City AL8 6NU

    Received 27 Jun 2023
  19. Decided - GrantedW6/2013/0318/TE

    Removal of section of shrubs - Holly and Choisya, located in rear garden

    28 Reddings, WELWYN GARDEN CITY, AL8 7LA

    Received 14 Feb 2013
  20. Decided - Granted6/2024/1268/EMT

    Rear of house- Fell large Conifer by back door to ground level. Front Garden- Reduce hedge to 5 ft along pavement

    182 Knightsfield Welwyn Garden City AL8 7RJ

    Received 5 Jul 2024
  21. Decided - Granted6/2015/1887/HOUSE

    Erection of single storey rear and two storey front and side extension

    387 St Albans Road West, Hatfield, AL10 9RU

    Received 8 Sept 2015
  22. Decided - WithdrawnN6/2004/1493/FP

    INSTALLATION OF 5 METRE LIGHTING COLUMNS TO GARAGE FORECOURTS

    GARAGE BLOCK AT, HEATHER ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6XU

    Received 8 Oct 2004
  23. Decided - GrantedN6/2008/1276/DS

    DISCHARGE OF CONDITIONS 2, 4 & 5 OF PLANNING PERMISSION N6/2007/1847/FP (MATERIALS, LANDSCAPING AND TREE PROTECTION)

    10 Oaklea Welwyn AL6 0PU

    Received 1 Aug 2008
  24. Decided - GrantedS6/2010/0127/FP

    ERECTION OF PART SINGLE, PART TWO STOREY REAR EXTENSION AND TWO REAR DORMER WINDOWS WITH ACCOMMODATION PROVIDED WITHIN THE ROOF

    72 BROOKMANS AVENUE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7QQ

    Received 22 Jan 2010

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