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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - WithdrawnN6/2007/1208/FP

    Erection of a two storey side extension, single storey front and rear extension following demolition of existing outbuilding and garage

    14 Hyde Valley, WELWYN GARDEN CITY, Hertfordshire, AL7 4NA

    Received 8 Aug 2007
  2. Decided - Granted6/2022/1699/EMT

    T1 - 1 x Larch (corner of house) to dismantle in sections to ground level - Tree is in close proximity to corner of house. Large lateral roots on surface causing trip hazards T2 - 1 x Cherry to fell to ground level - Tree is showing poor form with canker present T3 - 1 x Ash to fell to ground level - Small Ash stem to remove amongst group of large Ash. Will improve light G1 - Group of Ash to reduce lateral branches over lawn area by 2.5m - Long overextended limbs are causing lots of shading. T4 - 1 x Pine to dismantle in sections to ground level - Tree is totally suppressed on one side leading to poor form. T5 - 1 x Leyland Cypress to fell to ground level - Young tree starting to develop but needs to be removed before it becomes nuisance.

    37 High Oaks Road Welwyn Garden City AL8 7BT

    Received 18 Jul 2022
  3. Decided - GrantedW6/2005/1516/EM

    FORMATION OF VEHICLE HARDSTANDING (RETROSPECTIVE)

    1 West Mead, Welwyn Garden City, AL7 4SA

    Received 8 Dec 2005
  4. Decided - GrantedN6/2008/1392/TP

    REMOVAL OF OVERHANGING BRANCH OF T22 OAK, REMOVE DEAD BRANCH AND DEAD WOOD FROM T21 SWEET CHESTNUT, T38 AND T39 CEDAR COVERED BY TPO 203

    2 Oaklands Rise Welwyn AL6 0RQ

    Received 8 Aug 2008
  5. Decided - Granted6/2024/1186/COND

    Submission of details pursuant of condition 1 (sections and elevations) on planning permission 6/2024/0523/HOUSE

    4 Tolmers Mews Newgate Street Hertford SG13 8RG

    Received 25 Jun 2024
  6. Decided - Granted6/2020/3001/EM

    Re-tiling of existing roof and insertion of 3 x roof lights

    20 Beehive Green Welwyn Garden City AL7 4BG

    Received 13 Nov 2020
  7. Decided - RefusedN6/2007/1693/FP

    ERECTION OF SINGLE STOREY REAR EXTENSION & CONVERSION OF LOFT, INCORPORATING TWO DORMER WINDOWS

    12 RUSSELLCROFT ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6QT

    Received 9 Nov 2007
  8. Decided - Refused6/2024/1444/HOUSE

    First floor side extension, single storey side and rear extension with insertion of rooflights, part garage conversion with raising of roof and alterations to openings

    97 Pentley Park Welwyn Garden City AL8 7SL

    Received 31 Jul 2024
  9. Decided - Granted6/2022/0172/COND

    Submission of details pursuant of condition 3 (acoustic control) and condition 4 (cycle parking) on planning permission from description of proposal 6/2020/0826/FULL

    Oakview Lodge Princes Avenue Welwyn Garden City AL7 4DT

    Received 24 Jan 2022
  10. Decided - Withdrawn6/2026/1296/EM

    Erection of single story side extension, part single and part two storey rear extension, with alteraions to openings on side elevations and new patio area

    9 Youngs Rise Welwyn Garden City AL8 6RT

    Received 23 Jul 2026
  11. Decided - GrantedN6/2008/0359/FP

    ERECTION OF SINGLE STOREY REAR EXTENSION

    55 MARSDEN GREEN, WELWYN GARDEN CITY, HERTS, AL8 6YD

    Received 21 Feb 2008
  12. Decided - Granted6/2017/1216/LAWP

    Certificate of lawfulness for the erection of a detached garage with machinery store and formation of gravel driveway

    Gayton Ayot Little Green Lane Ayot St Peter Welwyn AL6 9BD

    Received 2 Jun 2017
  13. Decided - Granted6/2025/1545/HOUSE

    Erection of a single storey rear extension and front extension to the entrance porch, including alterations to fenestration

    153 The Ryde Hatfield AL9 5DP

    Received 17 Jul 2025
  14. Decided - GrantedN6/2007/1799/FP

    ERECTION OF A SINGLE STOREY FRONT EXTENSION

    44 Hertford Road Digswell Welwyn AL6 0DB

    Received 26 Nov 2007
  15. Decided - GrantedW6/2015/0888/EM

    Formation of vehicle hardstanding

    3 Bushey Ley Welwyn Garden City AL7 3EY

    Received 27 Apr 2015
  16. Decided - Refused6/2020/0419/FULL

    Erection of 1x dwelling

    9 Rollswood Road Welwyn AL6 9TX

    Received 14 Feb 2020
  17. Decided - GrantedN6/2007/0685/FP

    FORMATION OF MENAGE / SCHOOLING AREA.

    PART OF BROCKSFIELD, HOMERSWOOD LANE, AYOT ST PETER, WELWYN, HERTFORDSHIRE, AL6

    Received 2 May 2007
  18. Decided - GrantedS6/2013/1888/FP

    Erection of garden room

    36 The Meadway, Cuffley, Potters Bar, EN6 4ES

    Received 29 Aug 2013
  19. DecidedN6/2009/0067/TC

    CROWN LIFT HORNBEAMS TO 2.5 METRES

    1 Springfields Welwyn Garden City AL8 6XS

    Received 8 Jan 2009
  20. Decided - GrantedS6/2014/2108/EI

    EIA Screening for proposed development of a primary district heat network

    Lands South East of, Northaw Road East, (Cattlegate Farm), Cuffley, Potters Bar, EN6 4RD

    Received 23 Sept 2014
  21. Decided - Granted6/2023/0516/HOUSE

    Erection of single storey rear extension, clerestory rooflights to side roof pitch, alterations to ground floor and openings in garden elevation

    6 Mornington Digswell Welwyn AL6 0AJ

    Received 7 Mar 2023
  22. Decided - RefusedN6/2013/0845/FP

    Erection of single storey side extension following removal of existing outbuilding

    24 High Oaks Road, WELWYN GARDEN CITY, AL8 7BH

    Received 24 Apr 2013
  23. Decided - Granted6/2018/2450/LAWP

    Certificate of lawfulness for a hip to gable roof alteration, installation of rear dormer and 3x front rooflights

    12 The Gardens Brookmans Park Hatfield AL9 7UL

    Received 25 Sept 2018
  24. Decided - GrantedN6/2014/2210/FP

    Erection of first floor rear extension

    11 Dellcott Close, Welwyn Garden City, AL8 7BB

    Received 6 Oct 2014

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