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England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
32,907Searchable applications
303Recorded as pending
87%Approval rate · 27,550 approved or refused records
3,592Refused applications

23,958 approved · 3,592 refused · 1,723 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 20 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2019/1051/PN11

    Prior approval for the change of use from offices (B1(a)) to dwelling houses (C3) to create 2 residential units

    2 New Road Stanborough Welwyn Garden City AL8 7TX

    Received 30 Apr 2019
  2. Decided - Granted6/2022/2561/EMT

    To fell an elm tree due to Dutch elm disease.

    88 The Vineyard Welwyn Garden City AL8 7PU

    Received 9 Nov 2022
  3. Decided - Granted6/2021/0944/TPO

    T1 - Beech 5-6m crown reduction T2 - Beech 5-6m crown reduction

    16 Mardley Hill Welwyn AL6 0TN

    Received 23 Mar 2021
  4. Decided6/2020/1300/TC

    Reduce 1 x Chestnut Tree [T1] reduce by 1.5m Reduce 1 x Ash tree [T2] reduce by 3m in height and 1m width

    32 Fordwich Road Welwyn Garden City AL8 6EY

    Received 9 Jun 2020
  5. Decided - GrantedN6/2013/0508/FP

    Erection of two storey side extension

    48A Harmer Green Lane Digswell Welwyn AL6 0AT

    Received 4 Mar 2013
  6. Decided - Granted6/2024/0778/HOUSE

    Retrospective permission for a garden outbuilding with the addition of an attached pergola

    125 Sweet Briar Welwyn Garden City AL7 3EB

    Received 25 Apr 2024
  7. Decided - Granted6/2019/0196/EM

    Reduce 1x Cherry tree Crown by 2m

    51 Valley Road Welwyn Garden City AL8 7DH

    Received 30 Jan 2019
  8. Decided - Granted6/2020/3347/PN27

    Prior approval for an additional storey on the existing property

    Manor Cottage Vineyards Road Northaw Potters Bar EN6 4PQ

    Received 11 Dec 2020
  9. Decided - GrantedN6/2014/2498/FP

    Erection of single storey side and rear extension

    52 Lemsford Lane, Welwyn Garden City, AL8 6YJ

    Received 13 Nov 2014
  10. Decided - Withdrawn6/2015/2313/FULL

    Change of use from vacant station masters house to hot food take-away (class A5) (operating Mon - Sun 16.30 - 22.30 hours). Erection of a 1.2m dwarf wall, lowering of ground floor roof, installation of an extract duct behind parapet wall together with elevation alterations including provision of an access ramp

    Station Master's House 15 Harmer Green Lane Digswell Welwyn AL6 0AS

    Received 13 Nov 2015
  11. Decided - Granted6/2023/2203/HOUSE

    Erection of a single storey rear and side extension with installation of one rear rooflight

    20 Gorseway Hatfield AL10 9GS

    Received 30 Oct 2023
  12. Decided - Granted6/2015/2460/HOUSE

    Erection of single storey rear extension

    9 Buttercup Close Hatfield AL10 9FH

    Received 14 Dec 2015
  13. Decided - Granted6/2023/0538/HOUSE

    Erection of a first floor rear extension and rebuild of existing ground floor extension

    23 Codicote Road Welwyn AL6 9TT

    Received 9 Mar 2023
  14. Decided - Refused6/2024/1776/LAWP

    Certificate of lawfulness for a proposed loft conversion including a rear dormer, front rooflights, new window within the 2nd floor floor side elevation and replace existing rear elevation windows and doors with new doors at ground floor level

    37 Welwyn Hall Gardens Welwyn AL6 9LF

    Received 13 Sept 2024
  15. Decided - Refused6/2019/0627/LAWP

    Certificate of lawfulness for the erection of single storey side extension

    Elm Cottage Great North Road Welwyn Garden City AL8 7TF

    Received 15 Mar 2019
  16. Decided - Granted6/2021/2756/LAWP

    Certificate of lawfulness for rear outbuilding

    16 Cranborne Road Hatfield AL10 8AP

    Received 22 Sept 2021
  17. Decided - Refused6/2026/1047/COND

    Confirmation that planning condition 9 on planning permission S6/1999/1064/OP has been discharged

    Unit off Gypsy Moth Avenue, Hatfield

    Received 16 Jun 2026
  18. Decided6/2018/2117/TPO

    T1-maple-crown reduce by 50% to maintain size -Conservation area

    6 Pentley Park Welwyn Garden City AL8 7RU

    Received 10 Aug 2018
  19. Decided - Withdrawn6/2021/1341/EM

    Erection of a two-storey detached house, associated parking and access on the land to the rear of 52 Bridge Road.

    52 Bridge Road Welwyn Garden City AL8 6UR

    Received 26 Apr 2021
  20. Decided - Refused6/2025/2288/HOUSE

    Erection of a single storey rear extension with roof-lights, re-laying of gable roofs, replacement casement windows to the rear and insertion of new roof light to existing rear extension

    10 Ayot Green Ayot St Peter Welwyn AL6 9AB

    Received 28 Oct 2025
  21. Decided - Granted6/2022/0505/HOUSE

    Conversion of roof space with flat roof dormer to rear and three roof lights to front elevation, creating one additional bedroom

    54 St Etheldredas Drive Hatfield Hertfordshire AL10 8BZ

    Received 3 Mar 2022
  22. Decided - RefusedS6/2014/2416/FP

    Erection of open air swimming pool with associated pool plant housing

    26 Carbone Hill, Northaw, Potters Bar, EN6 4PN

    Received 31 Oct 2014
  23. Decided - Granted6/2025/0215/FULL

    Demolition of three buildings on site and installation of site hoarding along street facing boundary

    Howlands House Howlands Welwyn Garden City AL7 4SD

    Received 10 Feb 2025
  24. Decided - WithdrawnS6/2013/0954/FP

    Extension of two storey rear extension and rear lower ground floor extension, and new first and second floor accommodation including rear flat roofed dormer and rooflights following the removal of the existing roof and addition of new pitched and flat roofs

    73 Brookmans Avenue, Brookmans Park, HATFIELD, AL9 7QG

    Received 9 May 2013

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

View all applications

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.

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  • 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.

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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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    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.

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