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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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 10 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedN6/2015/1282/FP

    Erection of single storey rear extension and partial garage conversion

    35 Mardley Wood Welwyn AL6 0UY

    Received 16 Jun 2015
  2. Appeal Decided - DismissedN6/2007/0174/FP

    ERECTION OF TWO STOREY FRONT EXTENSION, RAISING OF ROOF TO PROVIDE FIRST FLOOR ACCOMMODATION AND SINGLE STOREY REAR EXTENSION INCORPORATING GARAGE FOLLOWING DEMOLITION OF EXISTING GARAGE.

    45 Robbery Bottom Lane Welwyn AL6 0UL

    Received 31 Jan 2007
  3. Decided - Granted6/2017/1978/EM

    T1 - Poplar tree to be felled

    71 Sweet Briar Welwyn Garden City AL7 3EB

    Received 4 Sept 2017
  4. Decided - Granted6/2023/1810/EMT

    1 x Hornbeam to reduce to around 1.5m above ground level

    17 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 30 Aug 2023
  5. Decided - Granted6/2017/2411/LAWP

    Certificate of lawfulness for a single storey rear extension

    39 Bishops Rise Hatfield AL10 9HQ

    Received 19 Oct 2017
  6. Appeal Decided - DismissedW6/2013/0492/EM

    Replacement UPVC windows

    49 Summer Dale, WELWYN GARDEN CITY, AL8 7QH

    Received 11 Mar 2013
  7. Decided - Granted6/2021/1144/VAR

    Variation of condition 3 (approved plans) on planning permission 6/2019/2591/HOUSE

    50 Plough Hill Cuffley Potters Bar EN6 4DS

    Received 8 Apr 2021
  8. Decided - Granted6/2017/1153/HOUSE

    Retention of gates and retaining wall

    36 The Avenue Welwyn AL6 0PP

    Received 26 May 2017
  9. Decided - Granted6/2018/2601/HOUSE

    Erection of single storey ground floor front and garage extension, first floor side extension, two storey rear extension and alterations to openings to facilitate loft conversion including front dormers and rear Juliet balcony

    93 Brookmans Avenue Brookmans Park Hatfield AL9 7QG

    Received 10 Oct 2018
  10. Decided - Granted6/2023/0670/TPO

    Fell T1 dead Horse Chestnut within TPO 24 Area 3

    16 Mardley Avenue Welwyn AL6 0UD

    Received 24 Mar 2023
  11. Decided - Refused6/2015/1586/LAWP

    Conversion of existing attached garage into habitable room and extend front of garage in line with existing building front elevation including alteration position of existing front and rear doors and windows

    113 Dixons Hill Road Welham Green Hatfield AL9 7EE

    Received 28 Jul 2015
  12. Decided - Withdrawn6/2016/1758/HOUSE

    Conversion of loft from hip to gable and installation of rear dormer.

    117 Peplins Way, Brookmans Park, Hatfield, AL9 7UT

    Received 30 Aug 2016
  13. Decided - Refused6/2020/0819/HOUSE

    Erection of two storey side and first floor rear extension

    11 Cranborne Road, Hatfield, AL10 8AW

    Received 31 Mar 2020
  14. Decided - Granted6/2018/2628/TPO

    Crown reduce chestnut tree by upto 40% and Reduce cedar tree by 30% - Covered by TPO 542(2016)

    St Mary's Church,Church Street Essendon AL9 6AR

    Received 12 Oct 2018
  15. Decided - Granted6/2017/0295/TPO

    Fell oak tree covered by TPO 194 (2015) Dead & Dangerous

    8 Broadleaf Grove Welwyn Garden City AL8 7AZ

    Received 10 Feb 2017
  16. Decided - Granted6/2018/2683/EM

    Erection of single storey rear infill extension and alterations to openings

    132 Lemsford Lane Welwyn Garden City AL8 6YP

    Received 18 Oct 2018
  17. Decided - Granted6/2016/0753/TPO

    Crown reduce field Maple tree by 30% - Conservation Area

    11 Aldock, Welwyn Garden City, AL7 4QF

    Received 22 Apr 2016
  18. Decided - Refused6/2020/2327/EM

    Erection of a brick built porch 4ft by 7ft with matching brick as house brick and replacing with a composite front door

    128 Mount Way Welwyn Garden City AL7 4JX

    Received 10 Sept 2020
  19. Decided - Granted6/2018/2610/HOUSE

    Erection of part single part two storey rear extension, single storey side extensions, porch with loft conversion including alterations to openings

    2 Fearnley Road Welwyn Garden City AL8 6HW

    Received 11 Oct 2018
  20. Decided - Refused6/2021/1174/HOUSE

    Erection of two storey side and single storey rear extensions

    23 Marley Road Welwyn Garden City AL7 4BT

    Received 12 Apr 2021
  21. Decided - Refused6/2023/2328/HOUSE

    Erection of a part two, part single storey side extension, erection of a single storey rear extension and erection of a detached garage. Landscaping and boundary treatment

    16 Guessens Road Welwyn Garden City AL8 6QR

    Received 17 Nov 2023
  22. Decided - Granted6/2019/3182/FULL

    Change of use of common land (pavement) to external seating area (A3/A4)

    17-19 Howardsgate Welwyn Garden City AL8 6AL

    Received 18 Dec 2019
  23. Decided - RefusedS6/2009/2703/FP

    CONVERSION AND EXTENSION OF AGRICULTURAL BUILDING TO A DWELLING PLUS ERECTION OF GARAGE

    THE ESTATE YARD, NORTH MYMMS PARK, NORTH MYMMS, HATFIELD, HERTFORDSHIRE, AL9 7TR

    Received 24 Dec 2009
  24. Decided - Granted6/2017/0912/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.7m. in depth, 3.3m. in height and 2.57m. to the eaves

    49 Bluebridge Road Brookmans Park Hatfield AL9 7UW

    Received 28 Apr 2017

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

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Researching a proposal in Welwyn Hatfield Borough Council

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How to search planning applications

Guides to planning records

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    Planning approval rates: how to read council statistics

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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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