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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
23,247Searchable applications
313Recorded as pending
86%Approval rate · 18,964 approved or refused records
2,656Refused applications

16,308 approved · 2,656 refused · 1,200 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2018/0362/EM

    Fell 1 x Conifer tree and replace by hard standing and vehicle crossover

    7 Attimore Road Welwyn Garden City AL8 6LH

    Received 5 Feb 2018
  2. Decided - Granted6/2021/1055/TPO

    Reduce crown of 1 x Oak tree (T1) by 2m

    2 Upland Drive Hatfield AL9 6PS

    Received 30 Mar 2021
  3. Decided - Granted6/2025/1567/EMT

    TPO 1021 (2020) Oak to fell and not replant (subsidence)

    33 Barnfield Road Welwyn Garden City AL7 3TQ

    Received 21 Jul 2025
  4. Appeal Decided - Dismissed6/2018/0650/FULL

    Permission for the erection of 4 detached dwellings, retention of existing dwelling (no.22) with associated parking and provision of internal access road and turning area

    22 The Avenue Welwyn AL6 0PP

    Received 1 Mar 2018
  5. Decided - Granted6/2022/2533/VAR

    Variation of condition 21 (approved plans) on planning permission 6/2021/2207/MAJ for changes to the lighting arrangement

    Campus West The Campus Welwyn Garden City Hertfordshire AL8 6BX

    Received 4 Nov 2022
  6. Decided - Granted6/2024/0160/FULL

    Erection of a two storey 6-bed rear extension, single storey 4-bed side extension and part two storey and single storey extensions incorporating fire evacuation lift and stair well to the existing care home.

    St Andrews Care Home Great North Road Welwyn Garden City AL8 7SR

    Received 29 Jan 2024
  7. Decided - Granted6/2024/1930/EMT

    Reduce 1 x oak by 2m to historic pruning points.

    1 Willow Grove, Welwyn Garden City, AL8 7NA

    Received 9 Oct 2024
  8. Decided - Refused6/2020/1904/LAWE

    Certificate of lawfulness for the existing use of HMO.

    62 Eagle Way Hatfield AL10 8RE

    Received 3 Aug 2020
  9. Decided - Granted6/2019/2079/EM

    Erection of a rear conservatory

    24 Birds Close Welwyn Garden City AL7 4AR

    Received 20 Aug 2019
  10. Decided - Granted6/2021/2357/EMT

    Multi-stemmed Hornbeam - reduce by 30% Hornbeam - reduce by 30%

    19 Pentley Park Welwyn Garden City AL8 7RT

    Received 9 Aug 2021
  11. Decided - Granted6/2019/1295/LB

    Alterations and erection of extension to the utility room forming a draught lobby and replacement existing front door.

    22 Church Street Welwyn AL6 9LX

    Received 31 May 2019
  12. Decided - Granted6/2023/1740/EM

    Retrospective application for retention of driveway, windows and front door.

    314 Howlands Welwyn Garden City AL7 4HD

    Received 17 Aug 2023
  13. Decided - Refused6/2021/1426/LAWP

    Certificate of lawfulness for the erection of an outbuiding to replace existing garage and workshops

    Hill House Waterend Lane Ayot St Peter Welwyn AL6 9BB

    Received 5 May 2021
  14. Decided - Granted6/2023/1928/HOUSE

    Erection of a single storey rear extension and single storey side extension to form a connection between the house and existing garage to facilitate garage conversion, with landscaping and installation of hardstanding

    2 Woodgate Avenue Northaw Potters Bar EN6 4EW

    Received 18 Sept 2023
  15. Decided - Granted6/2023/2401/LAWP

    Certificate of lawfulness for the proposed erection of a single storey side extension

    8 Holme Close Hatfield AL10 9LQ

    Received 29 Nov 2023
  16. Decided - Granted6/2016/1840/HOUSE

    Erection of part single storey and double storey rear extension following demolition of existing part single storey rear extension

    15 Georges Wood Road, Brookmans Park, Hatfield, AL9 7BY

    Received 7 Sept 2016
  17. Decided - Granted6/2019/0204/LAWLB

    Certificate of lawfulness for proposed work to listed building to include re-roofing of all upper levels of the roof, tiles, battens etc, with similar clay tiles

    Nast Hyde Farm Wilkins Green Lane Hatfield AL10 9RF

    Received 30 Jan 2019
  18. Decided - Granted6/2017/1076/ADV

    Installation of 1x internally illuminated fascia sign

    Building 4000 Mosquito Way Hatfield AL10 9US

    Received 18 May 2017
  19. Decided - Granted6/2025/2327/EM

    Changes to driveway and front garden. Addition of electric charging point. Addition of summerhouse in back garden

    12 Guessens Road Welwyn Garden City AL8 6QR

    Received 4 Nov 2025
  20. Decided - Granted6/2018/2442/PN11

    Prior approval for the change of use from offices (B1 (a)) to dwellinghouses (C3) at first and second floor to include the creation of 16 x 1 bedroom flats

    Blackhorse House, 36 Salisbury Square, Hatfield, AL9 5DD

    Received 20 Sept 2018
  21. Decided - Split6/2017/0675/COND

    Submission of details pursuant to condition 1 (materials samples), 2 (hard & soft landscaping), 4 (milestone protection scheme), 5 (vehicle access plans), 7 (wheel cleaning facilities), 8 (cycle parking), 9 (noise reduction scheme), 10 (refuse and recycling) and 11 (remediation scheme) attached to planning permission 6/2016/1950/FULL, dated 10/01/2017.

    Land adjacent to 82 Great North Road Welwyn AL6 0TA

    Received 31 Mar 2017
  22. Decided6/2025/0087/TC

    1 x Apple to reduce by approximately 2m in height and width

    14 Attimore Road Welwyn Garden City AL8 6LW

    Received 20 Jan 2025
  23. Decided - Granted6/2018/1657/TPO

    Reduce 1 x Oak tree by 40%

    16 Mardley Hill Welwyn AL6 0TN

    Received 22 Jun 2018
  24. Decided - Granted6/2022/2517/TPO

    Changed to; T1 – Fell Elm due to disease. T2 – Hornbeam crown reduction by 30% (1m back from original pollard points) T3 – Pollard/monolith Ash to 10m G1 –Fell dead Elm marked with pink spray. T4 – Fell Ash due to disease. T5 – Horse Chestnut – reduce crown by 3 metres due to dead limbs and signs of bleeding canker. T6 – Oak – Reduce East and South side of tree by 1.5m All trees covered by TPO 626 (2017)

    63 Calder Avenue Hatfield AL9 7AJ

    Received 3 Nov 2022

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

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    Planning application documents: what to read first

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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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