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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
39,849Searchable applications
298Recorded as pending
86%Approval rate · 33,411 approved or refused records
4,778Refused applications

28,633 approved · 4,778 refused · 2,184 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - GrantedS6/2015/1423/HOUSE

    Erection of single storey rear extension

    52 Calder Avenue Brookmans Park Hatfield AL9 7AG

    Received 3 Jul 2015
  2. Decided - GrantedS6/2006/0503/FP

    ALTERATIONS TO EXISTING EXTERNAL ACCESS STAIRCASE TO FLAT NO 18 AND ERECTION OF ADDITIONAL EXTERNAL ACCESS STAIRCASE TO FLAT NO 20

    18-20 Station Road Cuffley Potters Bar EN6 4HT

    Received 19 Apr 2006
  3. Decided6/2017/2225/TPO

    Removal of Weeping Ash Tree branch overhanging gutter - Conservation Area

    11 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 2 Oct 2017
  4. Decided - Granted6/2021/0589/FULL

    Erection of a single-storey portacabin to the rear of Spring House Surgery, for a temporary period of 3 years

    Spring House Medical Centre Ascots Lane Welwyn Garden City AL7 4HL

    Received 24 Feb 2021
  5. Decided - GrantedW6/2004/0608/EM

    ERECTION OF A REAR CONSERVATORY

    51 Broomhills, Welwyn Garden City, AL7 1RE

    Received 26 Apr 2004
  6. Decided6/2026/0662/TC

    T1 Black Poplar to fell.

    13 Stacklands Welwyn Garden City AL8 6XW

    Received 14 Apr 2026
  7. Decided - GrantedW6/2008/1794/EM

    FORMATION OF VEHICLE HARDSURFACING, REMOVAL OF SECTION OF SHRUBBERY ON FRONTAGE AND ERECTION OF GARDEN SHED

    150 HOWLANDS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4RG

    Received 19 Sept 2008
  8. Decided - RefusedS6/2015/0177/FP

    Erection of double storey side extension, garage conversion, replacement of single storey roof to front, new windows and internal alterations

    4 Newgate Street Village Hertford SG13 8RA

    Received 28 Jan 2015
  9. Decided - GrantedN6/2008/0439/CA

    ERECTION OF SINGLE STOREY SIDE EXTENSION, FOLLOWING DEMOLITION OF EXISTING EXTENSION

    99 ATTIMORE ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6LG

    Received 11 Mar 2008
  10. Decided - Granted6/2019/0517/COND

    Submission of details pursuant to condition 1 (Material Samples)on approved planning permission 6/2018/0140/HOUSE

    49 Elmwood Welwyn Garden City AL8 6LD

    Received 7 Mar 2019
  11. Decided - Granted6/2018/1087/HOUSE

    Erection of a conservatory to replace existing

    257 Handside Lane Welwyn Garden City AL8 6TF

    Received 26 Apr 2018
  12. Decided - Granted6/2026/1211/EMT

    1 x Ash to reduce canopy by 2.5m height & width.

    70 Valley Road Welwyn Garden City AL8 7DP

    Received 10 Jul 2026
  13. Decided - GrantedW6/2004/0483/EM

    ERECTION OF PART TWO STOREY AND PART SINGLE STOREY REAR/SIDE EXTENSION

    38 Colgrove, Welwyn Garden City, AL8 6HU

    Received 30 Mar 2004
  14. Decided - Granted6/2025/1218/HOUSE

    Erection of single storey rear extension, with alterations to openings on side elevation, garage conversion with extension to provide annexe accommodation to be used ancillary to the main dwelling, with alterations to openings

    11A Guessens Road Welwyn Garden City AL8 6QW

    Received 17 Jun 2025
  15. Decided - Granted6/2023/1022/EM

    Raise parapet of existing side extension, using matching brickwork and copings, to accommodate 150mm flat board insulation.

    129 Sweet Briar Welwyn Garden City AL7 3EB

    Received 15 May 2023
  16. Decided - GrantedS6/2008/0887/FP

    ERECTION OF REAR CONSERVATORY

    67 Lavender Close Hatfield AL10 9FW

    Received 4 Jun 2008
  17. Decided - Granted6/2015/2207/PN15

    Prior approval for the replacement of 9.7m telecom monopole and installation of pagona cabinet

    Land off Panshanger Drive, Welwyn Garden City, AL7 2LU

    Received 28 Oct 2015
  18. Decided - GrantedN6/2007/1971/FP

    ERECTION OF FIRST FLOOR EXTENSION WITH DORMER WINDOWS

    34 BROCKET ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7TY

    Received 20 Dec 2007
  19. Decided6/2019/2802/TC

    Fell 1x Prunus Fructosa Globosa tree (T1)

    47 Elmwood Welwyn Garden City AL8 6LD

    Received 5 Nov 2019
  20. Decided - Granted6/2016/2434/HOUSE

    Enlargement of existing garage

    27 Coneydale Welwyn Garden City AL8 7RX

    Received 17 Nov 2016
  21. Decided - Granted6/2024/0002/LAWP

    Certificate of lawfulness for erection of outbuilding to rear garden for home office, gym and garden storage uses

    35 Codicote Road Welwyn AL6 9TT

    Received 2 Jan 2024
  22. Decided - RefusedN6/2012/2615/FP

    Alterations to front elevation, erection of first floor front extension and two storey side extension and single storey rear extension

    3 Roundwood Close Welwyn AL6 0XB

    Received 17 Dec 2012
  23. Decided - Granted6/2023/0012/LAWP

    Certificate of lawfulness for the erection of single storey rear extension

    28 Firs Wood Close Northaw Potters Bar EN6 4BY

    Received 4 Jan 2023
  24. Decided - RefusedN6/2013/2546/OP

    Outline permission for demolition of existing bungalow and erection of two new dwellings

    32 Harmer Green Lane Digswell Welwyn AL6 0AT

    Received 29 Nov 2013

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

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

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    Planning permission drawings: how to read plans

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  • 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.

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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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