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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
29,330Searchable applications
307Recorded as pending
87%Approval rate · 24,337 approved or refused records
3,245Refused applications

21,092 approved · 3,245 refused · 1,560 withdrawn. Received dates in our records: 1 Nov 1999 to 13 Oct 2026. Most recent record check: 18 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/0011/VAR

    Variation of condition 1 (works in accordance with approved plans) on planning permission 6/2016/0818/MAJ to remove 1 dormer window in the south elevation of the service yard, installation of 5 roof lights and minor internal layout changes (no change in number and type of residential units).

    Stonehills House, Stonehills, Welwyn Garden City, AL8 6NH

    Received 5 Jan 2017
  2. Decided - Granted6/2026/1171/EM

    Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory

    5A Honeycroft Welwyn Garden City AL8 6HR

    Received 6 Jul 2026
  3. Decided - Granted6/2016/1450/ADV

    Installation of 1no internally illuminated fascia sign and 1no internally illuminated projection sign

    26-32 Town Centre, Hatfield, AL10 0LD

    Received 18 Jul 2016
  4. Decided - Refused6/2024/1581/PN10

    Prior Approval for the change of use of an agricultural building into a single dwellinghouse (Class C3)

    7 Normans Lane Welwyn AL6 9TQ

    Received 20 Aug 2024
  5. Decided - Granted6/2016/0917/VAR

    Variation of condition 1 (drawings) on planning permission 6/2015/2562/HOUSE - Front extension and pitched roof over existing garage to two storey detached dwelling

    48 Bradgate, Cuffley, Potters Bar, EN6 4RN

    Received 11 May 2016
  6. Decided - Granted6/2016/0083/TPO

    Crown reduce Sorbus tree (T1) by 3m, reduce lateral by 1.5m and crown lift to 4m. Crown reduce Sorbus tree (T2) by 3m and reduce lateral by 1.5m. Crown reduce 4 Lime trees (T3-T6) by 3m, reduce lateral by 3m and crown lift to 4m. Crown reduce 2 Lime trees (T7-T8) by 2m, reduce lateral by 1m and crown lift to 4m. Crown reduce 4 Lime trees (T9-T12) by 2m, reduce lateral by 1m and crown lift to 4m - Conservation Area

    8 Stanborough Close, Welwyn Garden City, AL8 6XB

    Received 20 Jan 2016
  7. Decided - Refused6/2018/1671/EM

    Formation of hardstanding and partial removal of front hedge.

    4 Cole Green Lane Welwyn Garden City AL7 3PW

    Received 25 Jun 2018
  8. Decided - Granted6/2017/2378/EM

    Reduce crown of 2 x Apple trees by approx 45%, remove dead wood from crown of 1 x Cherry tree, fell 1 x Poplar tree and lift crown by approx 9-10 ft from ground level on Multi-stemmed Thuja tree - Conservation Area

    6 Sherrardspark Road Welwyn Garden City AL8 7JP

    Received 16 Oct 2017
  9. Decided - GrantedS6/2014/0765/FP

    Erection of single storey front extension

    Dental Surgery 7 Birchwood Avenue Hatfield AL10 0PL

    Received 8 Apr 2014
  10. Decided - Granted6/2017/1721/EM

    Erection of single storey rear extension and alterations

    29 Great Ley Welwyn Garden City AL7 4TJ

    Received 1 Aug 2017
  11. Decided - Granted6/2023/1320/HOUSE

    Loft conversion including the installation of rear dormer window and insertion of three roof lights to front roofslope

    55 St Etheldredas Drive Hatfield AL10 8BZ

    Received 26 Jun 2023
  12. Decided - Granted6/2018/2190/HOUSE

    Erection of an orangery following the demolition of existing conservatory

    The Old Vicarage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN

    Received 22 Aug 2018
  13. Decided - Granted6/2021/1400/FULL

    Internal alterations and new front access door to divide premises into two units

    1 Church Street Welwyn AL6 9LL

    Received 4 May 2021
  14. Decided - Granted6/2022/0396/HOUSE

    Erection of Garden Studio and replacement garage/shed

    Hornbeam House Ayot St Peter Road Ayot St Peter Welwyn AL6 9BG

    Received 21 Feb 2022
  15. Decided - Granted6/2018/0083/HOUSE

    Erection of rear conservatory following demolition of existing patio door (retrospective)

    128 Holwell Road Welwyn Garden City AL7 3RW

    Received 10 Jan 2018
  16. Decided6/2021/0484/TC

    Reduce 1 x Beech tree by 3-4m covered by conservation area

    6 Blakemere Road Welwyn Garden City AL8 7PJ

    Received 15 Feb 2021
  17. Decided - Granted6/2025/0220/FULL

    Erection of new dwelling following demolition of existing dwelling

    36A Reynards Road Welwyn AL6 9TP

    Received 10 Feb 2025
  18. Decided - Granted6/2017/2620/HOUSE

    Erection of front porch and single storey rear extension including installation of 1 x rear rooflights following demolition of existing storage rooms

    25 Honeysuckle Gardens Hatfield AL10 8PL

    Received 9 Nov 2017
  19. Decided - Granted6/2024/1882/EMT

    1 x Sycamore to remove in sections to ground level. 1 x Silver Birch to remove 2 smaller stems to ground level. Reduce remaining tree by approximately 2m height and 1.2m width. 1 x Lawson cypress to remove to ground level.

    26 Attimore Road Welwyn Garden City AL8 6LP

    Received 30 Sept 2024
  20. Decided - Granted6/2016/0069/HOUSE

    Erection of single storey front extension and two storey and single storey rear extension

    18 Birchwood Close Hatfield AL10 0PP

    Received 18 Jan 2016
  21. Decided - Granted6/2020/0318/EM

    Fell 1x Apple tree T1

    72 Pentley Park Welwyn Garden City AL8 7SG

    Received 5 Feb 2020
  22. Decided6/2020/0134/TC

    Reduce 2 x Sycamore trees height by 3-4 metres and width by 2 metres

    103 Attimore Road Welwyn Garden City AL8 6LG

    Received 20 Jan 2020
  23. Decided - Granted6/2020/0622/FULL

    Erection of 1x dwelling with associated parking and private amenity space

    46A Peplins Way Hatfield AL9 7UU

    Received 4 Mar 2020
  24. Decided - Granted6/2016/0217/EM

    Erection of single storey rear extension

    14 Elm Gardens, Welwyn Garden City, AL8 6RY

    Received 9 Feb 2016

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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