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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
24,095Searchable applications
313Recorded as pending
86%Approval rate · 19,719 approved or refused records
2,743Refused applications

16,976 approved · 2,743 refused · 1,257 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/0585/FULL

    Erection of a new 6m high Social Club building (975sq.m) with associated landscaping and works between the Law Court Building and Weston Auditorium

    University of Hertfordshire De Havilland Campus Hatfield AL10 9UF

    Received 22 Mar 2017
  2. Decided6/2026/0763/TC

    T1 x Juniper to fell.

    32 Valley Road Welwyn Garden City AL8 7DN

    Received 30 Apr 2026
  3. Under Consultation6/2026/1542/HOUSE

    Erection of freestanding aluminium garden pergola

    3 Scholars Mews Welwyn Garden City AL8 7JQ

    Received 4 Sept 2026
  4. Decided - Refused6/2016/1848/FULL

    Change of use to Sui Generis (installation and operation of three gas engines and ancillary development)

    40 Burrowfield, Welwyn Garden City, AL7 4SR

    Received 9 Sept 2016
  5. Decided - Granted6/2021/2341/EM

    Erection of a garden studio

    11 Nut Grove Welwyn Garden City AL8 7SQ

    Received 6 Aug 2021
  6. Decided - Granted6/2025/2218/EMT

    1 x Cherry to reduce by 1.5m height and width.

    2 The Lawns Welwyn Garden City AL8 7HU

    Received 20 Oct 2025
  7. Decided - Granted6/2023/0317/HOUSE

    Erection of two front dormers, porch, new windows and internal remodelling

    112 Harmer Green Lane Digswell Welwyn AL6 0ET

    Received 9 Feb 2023
  8. Decided - Granted6/2025/0704/TPO

    Large beech tree – to remove four lowest limbs growing towards the garden, the hut and over the green house and remove small hanging down branches on the other side of the tree, field side (TPO 1156 G6)

    43 Warren Way Digswell Welwyn AL6 0DQ

    Received 14 Apr 2025
  9. Decided - Granted6/2017/2485/TPO

    Reduce crown of Apple tree by 1.5m in height and 1.5m in laterals, reduce crown of Purple Plum tree by 2m and Fell 1 Hawthorn tree - Conservation Area

    21 Knightsfield Welwyn Garden City AL8 7JE

    Received 25 Oct 2017
  10. Decided - Granted6/2019/1407/HOUSE

    Erection of single storey side extension and a front porch

    10 Bramble Road, Hatfield, AL10 9SA

    Received 10 Jun 2019
  11. Decided - Refused6/2017/0073/FULL

    Erection of front extension

    6 Great North Road Welwyn AL6 0PL

    Received 16 Jan 2017
  12. Decided - Granted6/2018/3219/TPO

    Reduce 1.5m 1x Acacia Tree, 1x Oak Tree by 1m Covered by TPO 673(2017)

    27 Oaklands Rise Welwyn AL6 0RN

    Received 18 Dec 2018
  13. Decided - Granted6/2021/1967/PN8

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 3m to the eaves.

    20 Astwick Avenue Hatfield AL10 9LA

    Received 29 Jun 2021
  14. Decided - Granted6/2017/1565/EM

    Retention of garage conversion to form a studio flat

    30 Archers Ride Welwyn Garden City AL7 4PS

    Received 17 Jul 2017
  15. Decided - Granted6/2026/0865/ADV

    Installation of 1 no. new communications Kiosk with integrated defibrillator and advertising display

    Land Outside 92 Town Centre Hatfield AL10 0JW

    Received 15 May 2026
  16. Decided - Granted6/2018/2344/HOUSE

    Single storey rear extension and patio

    251 Knightsfield Welwyn Garden City AL8 7RA

    Received 12 Sept 2018
  17. Decided - Refused6/2023/1490/EM

    Loft conversion with 2 dormers to rear and insertion of rooflight

    16 Brockswood Lane Welwyn Garden City AL8 7BG

    Received 17 Jul 2023
  18. Decided - Granted6/2024/2388/FULL

    Erection of a side extension to existing business units

    The Point Unit 1 Swallowfields Welwyn Garden City AL7 1WL

    Received 13 Dec 2024
  19. Decided - Granted6/2018/0571/COND

    Submission of details pursuant to condition 1 (materials samples) and 3 (hard and soft landscaping) on planning permission 6/2016/2452/FULL, dated 08/05/2017

    2 Rollswood Road Welwyn AL6 9TX

    Received 27 Feb 2018
  20. Decided - Granted6/2016/1113/HOUSE

    Erection of side and rear ground and first floor extension plus loft conversion

    6 Pine Grove, Brookmans Park, Hatfield, AL9 7BS

    Received 6 Jun 2016
  21. Decided - Granted6/2021/1457/LAWP

    Certificate of lawfulness for the erection of a front porch and outbuilding

    50 Wilshere Road Welwyn AL6 9PX

    Received 10 May 2021
  22. Decided - Granted6/2018/1190/EM

    Fell 1 x Elder tree and 1 x Hornbeam tree and reduce 1 x Hornbeam tree by approx. 3m

    1 Perrywood Walden Road Welwyn Garden City AL8 7PZ

    Received 7 May 2018
  23. Decided - Granted6/2018/1643/EM

    Reduce 1 x Yew tree (T1) by 2m from branch tips, 1 x Yew tree (T3) by 3m from branch tips and 5 x Lawsons Cypress (G2) by 3m in height and 1m from lateral branch tips and fell 3 x Holly trees (T2, T4 and G1)

    17A Beehive Green Welwyn Garden City AL7 4BE

    Received 22 Jun 2018
  24. Decided - Granted6/2019/0347/LAWP

    Certificate of lawfulness for erection of single storey rear extension

    61 Bluebridge Road Brookmans Park Hatfield AL9 7UW

    Received 14 Feb 2019

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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