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England · Local authority

Welwyn Hatfield planning applications

PlanningTrack collects planning applications and decisions from the public planning register of Welwyn Hatfield Borough Council. Search an address, application reference or proposal. Official Welwyn Hatfield website

Collected application statistics

Collected records · All available dates
36,415Searchable applications
333Recorded as pending
86%Approval rate · 30,332 approved or refused records
4,141Refused applications

26,191 approved · 4,141 refused · 1,945 withdrawn. Received dates in our records: 29 Apr 1948 to 20 Oct 2026. Most recent record check: 24 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2024/1963/FULL

    Subdivision of existing dwelling into two dwellings with additional parking space and extension to the existing driveway

    87 De Havilland Close Hatfield AL10 0DP

    Received 14 Oct 2024
  2. Decided - GrantedW6/2015/1028/EM

    Replacement of garden shed

    4 Sherrardspark Road, Welwyn Garden City, AL8 7JP

    Received 18 May 2015
  3. Decided - Granted6/2016/2311/EM

    Erection of single storey side extension

    85 Howlands Welwyn Garden City AL7 4RA

    Received 3 Nov 2016
  4. Decided - Granted6/2024/1735/HOUSE

    Erection of single storey side extension with alterations to fenestration, following demolition of existing building and conversion of existing garage into gym/ensuite

    2 Twelve Acres Welwyn Garden City AL7 4TG

    Received 10 Sept 2024
  5. Decided - Granted6/2020/0176/EMT

    Fell 1 x Holly tree

    4 High Oaks Road Welwyn Garden City AL8 7BH

    Received 24 Jan 2020
  6. Decided - Refused6/2019/3026/LAWE

    Certificate of lawfulness for the existing use of HMO (sui generis)

    136 Travellers Lane Hatfield AL10 8SS

    Received 29 Nov 2019
  7. Decided - Granted6/2021/2072/LAWP

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

    Windmill House Tylers Causeway Newgate Street Hertford SG13 8QN

    Received 8 Jul 2021
  8. Decided - Granted6/2017/2196/EM

    Erection of single storey and part two storey rear extension

    1 The Valley Green Welwyn Garden City AL8 7DQ

    Received 27 Sept 2017
  9. Decided - Granted6/2022/0267/LAWP

    Certificate of lawfulness for insertion of two roof windows in the existing roof, and change of elevations, window size and location on the front and rear elevation to facilitate internal alterations.

    14 The Wade Welwyn Garden City AL7 4LG

    Received 10 Dec 2021
  10. Decided - RefusedN6/2008/1651/FP

    ERECTION OF DETACHED GARAGE

    GATE END, AYOT LITTLE GREEN LANE, AYOT ST PETER, WELWYN, HERTFORDSHIRE, AL6 9BD

    Received 22 Aug 2008
  11. Decided - Granted6/2021/1852/COND

    Submission of details pursuant to condition number 1 (sample materials) on planning permission 6/2020/1515/LB

    6 Waterside Cottages Mill Green Bush Hall Lane Hatfield AL9 5NY

    Received 15 Jun 2021
  12. Decided - Granted6/2025/2398/LAWP

    Certificate of lawfulness for the erection of a detached outbuilding in the rear garden

    74 Warrengate Road North Mymms Hatfield AL9 7TY

    Received 14 Nov 2025
  13. Decided - WithdrawnS6/2008/1611/FP

    ERECTION OF TWO STOREY FRONT AND SIDE EXTENSION INCORPORATING FRONT DORMER AND SINGLE STOREY REAR EXTENSION FOLLOWING DEMOLITION OF EXISTING CONSERVATORY AND SIDE EXTENSION

    44 High Road, Hatfield, AL9 6HW

    Received 28 Aug 2008
  14. Decided - Granted6/2018/0504/LAWP

    Certificate of lawfulness for installation of rear dormer and front roof lights to facilitate loft conversion

    56 Talbot Road Hatfield AL10 0QY

    Received 20 Feb 2018
  15. Decided - Granted6/2016/1294/HOUSE

    Erection of single storey rear extension and internal alterations

    28 Autumn Grove, Welwyn Garden City, AL7 4DB

    Received 28 Jun 2016
  16. Decided - WithdrawnN6/2014/0512/FP

    Installation of ATM and alterations to shopfront

    52-54 Howardsgate, Welwyn Garden City, AL8 6BP

    Received 7 Mar 2014
  17. Appeal Decided - Dismissed6/2017/1079/FULL

    The erection of 3 x 2 bedroom flats

    Land adjacent to 37-48 Lambs Close, Cuffley, Potters Bar, EN6 4HD

    Received 18 May 2017
  18. Decided - Granted6/2017/1161/TPO

    7 x Lime, to reduce low limbs by 1.5meters (25%) removing major deadwood over 50mm and sever Ivy at 6foot - Conservation Area

    7 Handside Green Welwyn Garden City AL8 6SQ

    Received 26 May 2017
  19. Decided - Granted6/2021/2918/EM

    Erection of a single storey rear extension, partial conversion of garage to habitable use, insertion of 1 x bay window to front elevation, extension of driveway, alterations to fenestrations, and erection of raised decking/patio area to rear of dwelling

    45 Digswell Rise Welwyn Garden City AL8 7PP

    Received 11 Oct 2021
  20. Decided - Granted6/2021/0631/PN27

    Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 9.607m in height

    35 Northaw Road East Cuffley Potters Bar EN6 4LU

    Received 24 Feb 2021
  21. Decided - Granted6/2017/0780/EM

    Erection of shed in rear garden following the removal of existing shed.

    32 Blakemere Road Welwyn Garden City AL8 7PJ

    Received 18 Apr 2017
  22. Decided - Granted6/2017/2563/COND

    Submission of details pursuant to condition 6 (obscurity levels of glass) on 6/2017/0560/EM.

    143 Howlands Welwyn Garden City AL7 4RL

    Received 1 Nov 2017
  23. Decided - Granted6/2018/1121/HOUSE

    Alterations to front entrance, erection of a ground and first floor rear extension, loft conversion with roof pitch increase and front driveway amendments with front wall, piers and gate

    46 Woods Avenue Hatfield AL10 8NA

    Received 30 Apr 2018
  24. Decided - Granted6/2015/2554/EM

    Erection of single storey rear extension

    82 The Vineyard, Welwyn Garden City, AL8 7PU

    Received 23 Dec 2015

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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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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