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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
31,813Searchable applications
303Recorded as pending
87%Approval rate · 26,576 approved or refused records
3,482Refused applications

23,094 approved · 3,482 refused · 1,677 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2024/2031/EM

    Proposed new front door (white) as the lock is not working. The new door (black) is half glass meaning the hall will be warmer

    18 Rooks Hill Welwyn Garden City AL8 6ET

    Received 21 Oct 2024
  2. Decided6/2024/1353/TC

    Crown reduce 1 x Apple tree back to previous growth points. Crown thin 15%. Remove any major deadwood throughout crown. Regrowth being removed: 2-3m approx

    191 Handside Lane Welwyn Garden City AL8 6TE

    Received 15 Jul 2024
  3. Decided - Granted6/2019/1583/HOUSE

    Erection of a single storey rear extension, following demolition of existing conservatory, extension of raised patio area and alterations to fenestration to include rear facing Juliette balcony.

    20 Bluebells Welwyn AL6 0XD

    Received 28 Jun 2019
  4. Decided - Granted6/2017/1342/HOUSE

    Erection of single storey rear extension following demolition of existing brick outbuilding and formation of hardstanding

    52 Springfields Welwyn Garden City AL8 6XN

    Received 21 Jun 2017
  5. Appeal Decided - Allowed6/2017/1902/FULL

    Change of use of ground floor from sui-generis to residential (C3) to include the creation of 2 x 1-bedroom and 3 x 2-bedroom flats with external alterations including new fenestration, associated cycle & bin stores, car parking and landscaping

    36 Salisbury Square Hatfield AL9 5AF

    Received 24 Aug 2017
  6. Decided - Granted6/2024/0353/HOUSE

    Erection of a single storey side extension following the demolition of the existing attached greenhouse. Installation of front and rear roof lights

    13 Hangmans Lane Welwyn AL6 0TJ

    Received 23 Feb 2024
  7. Decided - Refused6/2017/0622/MAJ

    Erection of glazed linking extension, raising of existing brick wall, part demolition of existing flat roof structure and internal alterations

    The Manor House Hill Farm Lane Welwyn AL6 9BP

    Received 27 Mar 2017
  8. Decided - Refused6/2021/2493/HOUSE

    Erection of a single storey side extension following demolition of the existing single storey side extension, alterations to fenestrations, erection of an additional vehicular access, and extension of the existing front wall

    The Laurels Mill Green Bush Hall Lane Hatfield AL9 5NZ

    Received 25 Aug 2021
  9. Decided - Granted6/2020/1087/HOUSE

    Increase in height of part of dwelling, alterations to openings and installation of a rear dormer

    2 Marshmoor Cottages, Great North Road, Hatfield, AL9 5SD

    Received 14 May 2020
  10. Decided - Granted6/2015/1777/LAWP

    Certificate of Lawfulness for single storey side & rear extension

    4 Adele Avenue Digswell Welwyn AL6 0AU

    Received 20 Aug 2015
  11. Decided - Granted6/2025/2308/EM

    Erection of a single-storey timber garden outbuilding to be used as a small garden office and storage space for personal use

    158 Parkway Welwyn Garden City AL8 6HZ

    Received 30 Oct 2025
  12. Decided - Granted6/2018/2105/EM

    Retention of summer house / shed

    13 The Croft Welwyn Garden City AL7 4JY

    Received 13 Aug 2018
  13. Decided - Granted6/2020/1594/EM

    Erection of garden shed to rear

    29 Autumn Grove Welwyn Garden City AL7 4DB

    Received 3 Jul 2020
  14. Decided - Granted6/2017/2607/LAWP

    Certificate of Lawfulness for the erection of porch and rear extension

    14 Bramble Road Hatfield AL10 9SA

    Received 9 Nov 2017
  15. Decided - Granted6/2019/0226/EM

    Erection of a single storey rear extension and front porch

    39 Marsden Green Welwyn Garden City AL8 6YD

    Received 4 Feb 2019
  16. Decided - Granted6/2017/2141/VAR

    Variation of condition 1 (approved plans) on planning permission 6/2016/1058/FULL, dated 15/09/2017

    Bessemer Road Welwyn Garden City AL7 1HH

    Received 22 Sept 2017
  17. Decided - Granted6/2026/1177/HOUSE

    Erection of two single-storey side extensions, detached garage with barn-hipped roof and photovoltaic panels, relocated garden room and associated works to hardstanding and site layout.

    Red Lodge High Road Essendon Hatfield AL9 6HU

    Received 7 Jul 2026
  18. Decided - GrantedN6/2014/0118/HH

    Erection of single storey rear conservatory with ramped access

    6 New Road Woolmer Green Knebworth SG3 6JX

    Received 23 Jan 2014
  19. Decided - Granted6/2018/1465/COND

    Submission of details pursuant to condition 1 (material samples for external surfaces) on planning permission 6/2018/0096/HOUSE

    29 Upland Drive Brookmans Park Hatfield AL9 6PT

    Received 1 Jun 2018
  20. Decided - Granted6/2025/1888/EMT

    1 x Ash to remove in section to around 1.8m above ground level. Large tree between properties, historically heavily reduced, leading to high crown and unnatural from. Tree causes damp along side of the houses as no natural light enters the area. With large amounts of debris and bird poo also falling onto the roofs and paths.

    3 Old Forge Close Welwyn AL6 0SR

    Received 3 Sept 2025
  21. Decided - Granted6/2025/2178/HOUSE

    Erection of single storey rear extension following demolition of conservatory

    30 Osborne Road Little Heath Potters Bar EN6 1SF

    Received 14 Oct 2025
  22. Decided - Granted6/2022/0248/HOUSE

    Installation of new front wall and new entrance gate following the demolition of existing front wall and entrance gate

    70 Mymms Drive Brookmans Park Hertfordshire AL9 7AD

    Received 4 Feb 2022
  23. Decided - Granted6/2015/1846/FULL

    Conversion of a 2 bedroom maisonette into two 1 bedroom flats

    81 Bradmore Green, Brookmans Park, Hatfield, AL9 7QT

    Received 2 Sept 2015
  24. Decided - Granted6/2017/0068/TPO

    T1 Horse Chesnut reduce crown by 30% T1 Lime (multistemmed) reduce crown by 30% T3 Lime (multistemmed) reduce crown by 30% covered by TPO 278 (2003)

    71 New Road Digswell Welwyn AL6 0AL

    Received 13 Jan 2017

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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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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