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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
23,023Searchable applications
313Recorded as pending
86%Approval rate · 18,761 approved or refused records
2,638Refused applications

16,123 approved · 2,638 refused · 1,188 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/1704/EM

    Installation of new and replacement doors and windows, blocking existing doors and windows, internal alterations, relaying driveway, terrace and steps.

    26 Pentley Park Welwyn Garden City AL8 7SB

    Received 26 May 2021
  2. Decided - Granted6/2021/2656/TPO

    Crown thin by 20% 1 x Oak (T1) Crown thin by 25% 2 x Sweet Chestnut (T2) covered by TPO 655 (2017)

    5 Pine Crest Welwyn AL6 0EQ

    Received 13 Sept 2021
  3. Decided - Granted6/2018/0542/HOUSE

    Erection of a single storey rear extension with flat roof following demolition of shed.

    26 Hare Lane Hatfield AL10 8PP

    Received 23 Feb 2018
  4. Decided - Granted6/2025/0634/HOUSE

    Part conversion of garage

    7 Drakes Way HatfieldAL10 8XR

    Received 2 Apr 2025
  5. Decided - Granted6/2023/0519/TPO

    T1 - Horse Chestnut - 2.5m full crown reduction and deadwood removal to keep the natural shape of the tree whilst taking the weight out of the branches, lowing the risk of branches breaking in high winds TPO 4 G1

    88 Moffats Lane Hatfield AL9 7RW

    Received 7 Mar 2023
  6. Decided - Refused6/2017/2262/FULL

    Erection of a two storey rear extension to both properties and alterations to openings to facilitate conversion of existing houses to form 4 x 2 bedroom (No. 14) and 4 x 1-bedroom (No.16) flats with associated car parking and cycle stores, following the partial demolition of existing dwellings

    14 & 16 Bishops Rise Hatfield AL10 9HB

    Received 4 Oct 2017
  7. Decided6/2024/0584/TC

    Laburnum tree to fell.

    105 Attimore Road Welwyn Garden City AL8 6LG

    Received 25 Mar 2024
  8. Decided - Granted6/2021/0632/HOUSE

    Erection of rear single storey extension and garage conversion with insertion of new doors and increase in height of roof to create parapet detailing with insertion of rooflights.

    24 Attimore Road Welwyn Garden City AL8 6LW

    Received 26 Feb 2021
  9. Decided - Granted6/2022/2028/HOUSE

    Erection of a single storey rear extension and a front porch following the demolition of the existing conservatory and front canopy, base support to bay window

    19 Somersham Welwyn Garden City AL7 2PZ

    Received 1 Sept 2022
  10. Decided - Granted6/2024/0558/LAWE

    Certificate of lawfulness for existing alterations to the roof, including hipped to gable roof, rear dormer and front rooflights

    3 Ellenbrook Lane Hatfield AL10 9RW

    Received 21 Mar 2024
  11. Decided - Refused6/2020/0346/HOUSE

    Erection of single and two storey side extensions, part single/part two storey rear extension, first floor terrace and alterations to openings

    50 Wildhill Road, Hatfield, AL9 6EA

    Received 7 Feb 2020
  12. Decided - Granted6/2017/0300/FULL

    Conversion of existing dwelling involving internal alterations to form two flats with parking and amenity areas.

    7 High Dells Hatfield AL10 9JD

    Received 15 Feb 2017
  13. Decided - Granted6/2022/2773/HOUSE

    Erection of two storey rear extension

    16 Nimrod Drive Hatfield AL10 9LS

    Received 6 Dec 2022
  14. Decided - Granted6/2021/2984/HOUSE

    Erection of a two storey side extension, hip to gable roof conversion, single storey rear extension, part first floor rear extension, conversion of loft to habitable use to include erection of rear dormer window and installation of 4 front facing roof lights, and erection of front porch

    61 Peplins Way Brookmans Park Hatfield AL9 7UR

    Received 18 Oct 2021
  15. Decided - Granted6/2017/2016/HOUSE

    Erection of porch and formation of parking area and garden paths

    Orchard House Hatfield Park Great North Road Hatfield AL9 5NH

    Received 8 Sept 2017
  16. Decided - Granted6/2017/1214/COND

    Submission of details pursuant to condition 3 (geotechnical site investigation and site-specific survey), on planning permission 6/2016/1307/HOUSE

    14 Meadow Croft Hatfield AL10 0SG

    Received 2 Jun 2017
  17. Decided - Granted6/2019/0399/EM

    Various Tree Works: Reduce 1x Cherry tree 30%, Reduce 1x Maple tree by 30%, fell 1x Small Hawthorn and reduce 1x Conifer Tree by 30%

    85 Attimore Road Welwyn Garden City AL8 6LG

    Received 21 Feb 2019
  18. Decided - Granted6/2025/0363/EMT

    Reduce 1 x Cherry Plum to by 1.2m height & width

    17 Crossway Welwyn Garden City AL8 7ED

    Received 25 Feb 2025
  19. Decided - Refused6/2018/1448/HOUSE

    Installation of first floor front and rear dormer windows

    85 Warren Way Digswell Welwyn AL6 0DL

    Received 30 May 2018
  20. Decided - Granted6/2019/2469/COND

    Submission of details pursuant to condition 1 (Archaeology) on planning permission 6/2018/2497/FULL

    1-5 Park Street Hatfield AL9 5AT

    Received 3 Oct 2019
  21. Decided - Granted6/2021/2648/COND

    Submission of details pursuant to condition 2 (tree protection measures) on planning application 6/2020/2048/HOUSE

    53 Mardley Hill Welwyn AL6 0TT

    Received 12 Sept 2021
  22. Decided - Granted6/2018/1483/LAWP

    Certificate of lawfulness for reconfiguration of floorspace to accommodate installation of ancillary travel agency concession (Class A1) within existing retail unit (Class A1)

    Next plc. Unit 1A Oldings Corner Retail Park Comet Way Hatfield AL9 5JU

    Received 4 Jun 2018
  23. Decided - Granted6/2019/1424/EM

    Erection of a single storey rear extension

    32 Barnfield Road Welwyn Garden City AL7 3TQ

    Received 12 Jun 2019
  24. Decided - Granted6/2023/0203/HOUSE

    Erection of ground floor infill extension and modifications to existing rear extension

    26 New Road Knebworth SG3 6JX

    Received 27 Jan 2023

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

    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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