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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
19,531Searchable applications
298Recorded as pending
86%Approval rate · 15,785 approved or refused records
2,200Refused applications

13,585 approved · 2,200 refused · 987 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 12 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 Counts reflect the last collected status; some records may be out of date.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. Decided6/2018/0755/TPO

    Fell 1 x Ash - Conservation area

    31 Barleycroft Road Welwyn Garden City AL8 6JX

    Received 21 Mar 2018
  2. Decided - Granted6/2025/1229/EM

    Garage conversion and a like for like replacement front door

    18 Cole Green Lane Welwyn Garden City AL7 3PW

    Received 17 Jun 2025
  3. Decided - Granted6/2021/1776/EMH

    Erection of a single and two storey rear extension garage conversion to habitable accommodation and replacement front canopy.

    17 The Valley Green Welwyn Garden City AL8 7DQ

    Received 7 Jun 2021
  4. Decided - Granted6/2023/0872/EM

    Installation of solar planels to rear of roof

    5 Salisbury Gardens Welwyn Garden City AL7 3RS

    Received 25 Apr 2023
  5. Decided - Granted6/2018/0850/EM

    Window on side of workshop building, brick up existing workshop window facing inwards to the back garden and replace existing exterior doors of workshop.

    29 Marsden Road Welwyn Garden City AL8 6YQ

    Received 3 Apr 2018
  6. Decided - Granted6/2021/0552/FULL

    Permanent Change of use from a B1/B8 (Industrial /Warehouse) to a D1 (non residential institution) for use as a Place of Worship/community centre after expiration of temporary permission which ends on the 15 September 2021(06/2016/0737/FP)

    Unit 2 184 St Albans Road West Hatfield AL10 0TF

    Received 22 Feb 2021
  7. Decided - Granted6/2020/2670/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    Wyndham Cottage Camfield Place Kentish Lane Hatfield AL9 6JE

    Received 14 Oct 2020
  8. Decided - Granted6/2018/1870/HOUSE

    Erection of single storey rear extension and conversion of garage to gym/office including replacement of garage door to windows

    9 Peregrine Way Hatfield AL10 9UP

    Received 17 Jul 2018
  9. Decided - Granted6/2025/0667/COND

    Submission of details pursuant to Condition 1 (Hard & Soft Landscape) on planning permission 6/2024/2396/HOUSE

    35 Station Road Welham Green Hatfield AL9 7PF

    Received 7 Apr 2025
  10. Decided - Granted6/2024/0213/EMT

    Hornbeam - crown lift to 3m and reduce canopy on all sides by 3m. Silver birch - reduce height to 3-4m above ground level as the tree is loosing limbs due to die back

    29 Windhill Welwyn Garden City AL7 1RH

    Received 2 Feb 2024
  11. Decided - Granted6/2019/3079/HOUSE

    Erection of single storey side extensions; replacement ground floor mono-pitch roof serving dining room; alterations to openings and external appearance of dwelling; alterations to existing driveway and formation of new vehicular access

    36 School Lane, Welwyn, AL6 9PH

    Received 5 Dec 2019
  12. Decided - Granted6/2023/1159/HOUSE

    Conversion of garage and single-storey side/rear extension to create an integrated annexe

    39 Digswell Park Road Welwyn Garden City AL8 7NW

    Received 1 Jun 2023
  13. Decided - Granted6/2022/0018/EM

    Garden office room - 3.2m (W) x 2.5m (D) x 2.5m (H)

    26 Colgrove Welwyn Garden City AL8 6HU

    Received 5 Jan 2022
  14. Decided - Refused6/2024/0007/LAWP

    Certificate of lawfulness for the proposed erection of rear and side extensions and formation of hardstanding

    16 Carbone Hill Northaw Potters Bar EN6 4PL

    Received 2 Jan 2024
  15. Decided - Withdrawn6/2020/2789/HOUSE

    Erection of a replacement two-bedroom residential annex, erection of a replacement brick wall and alterations to the existing hardstanding and grass verge following the demolition of existing one-bedroom residential annex, stables building and boundary fence and the removal of shipping containers and builders yard equipment and materials

    Garden Cottage Danesbury Park Road Welwyn AL6 9SE

    Received 26 Oct 2020
  16. Decided - Granted6/2019/3151/LAWP

    Certificate of lawfulness for a loft conversion with a rear dormer and roof lights

    63 Holloways Lane Welham Green Hatfield AL9 7NU

    Received 16 Dec 2019
  17. Decided - Granted6/2023/2237/HOUSE

    Erection of single storey rear extension, garage conversion with replacement of garage door with window and alterations to openings on side elevation, following the demolition of existing conservatory

    18 Wellington Drive Welwyn Garden City AL7 2NB

    Received 3 Nov 2023
  18. Decided - Granted6/2019/1815/COND

    Submission of details pursuant to condition 1 (Materials), 2 (Construction Method Statement), 3 (Bins), 4 (Cycle Parking), 5 (Plans), 6 (Glazing and Ventilation) and 7 (Drainage Scheme) on planning permission 6/2017/1568/MAJ

    Former Xerox Campus Bessemer Road AL7 1HE

    Received 23 Jul 2019
  19. Decided - Granted6/2018/1272/HOUSE

    Erection of a single storey rear extension

    27 Station Road Digswell Welwyn AL6 0DX

    Received 14 May 2018
  20. Decided - Granted6/2018/0948/EM

    Fell 1 x Sycamore tree

    7 West Mead Welwyn Garden City AL7 4SA

    Received 11 Apr 2018
  21. Decided - Granted6/2020/0518/LB

    Installation of front fixed glazing unit and replace rear loft casement window

    Parkside House 58 Mill Lane Welwyn AL6 9ES

    Received 24 Feb 2020
  22. Decided - Granted6/2021/1217/HOUSE

    Erection of part-pitched and part-flat low level roof and single storey rear extension

    19 The Chase Welwyn AL6 0QT

    Received 14 Apr 2021
  23. Decided - Granted6/2026/0846/COND

    Submission of details pursuant to Condition 1 (Soft Landscaping) on planning permission 6/2025/2453/HOUSE

    10 Starling Lane Cuffley Potters Bar EN6 4JX

    Received 13 May 2026
  24. Decided - Granted6/2025/0641/PN8

    Prior approval for the erection of single storey rear extension measuring 3.4m in height, 6m in depth and 3m to the eaves

    10 Theobalds Road Cuffley Potters Bar EN6 4HQ

    Received 2 Apr 2025

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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