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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
28,599Searchable applications
307Recorded as pending
87%Approval rate · 23,678 approved or refused records
3,184Refused applications

20,494 approved · 3,184 refused · 1,520 withdrawn. Received dates in our records: 1 Nov 1999 to 13 Oct 2026. Most recent record check: 17 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/1129/LAWP

    Certificate of lawfulness for the provision of a new booster station housed in a kiosk measuring 4m x 3m x 2.4m

    1 Mill Green Lodge Mill Green Bush Hall Lane Hatfield AL9 5PA

    Received 31 Mar 2021
  2. Decided - Granted6/2018/0478/EM

    Proposed hardstanding to front

    5 Guessens Road Welwyn Garden City AL8 6QW

    Received 15 Feb 2018
  3. Decided - Granted6/2025/0118/PN8

    Prior Approval for the erection of a single storey extension to the rear of the garage, measuring 5.17m in depth, 3.26m in height and 2.32m to the eaves

    9 Welham Manor Welham Green Hatfield AL9 7EL

    Received 24 Jan 2025
  4. Decided - Refused6/2026/0654/HOUSE

    Erection of a detached carport with store

    2 Hill Rise Cuffley Potters Bar EN6 4EE

    Received 13 Apr 2026
  5. Decided - Granted6/2025/1702/LAWP

    Certificate of lawfulness for installation of dormer window to the rear to facilitate a loft conversion with insertion of rooflights to existing front facing roof and windows to the side elevation (either side)

    3 Heathlands Welwyn AL6 0UU

    Received 8 Aug 2025
  6. Decided - Refused6/2021/1643/HOUSE

    Construction of 2 x rear dormers and 2 x front roof lights to facilitate the conversion of the loft to a habitable space

    159 Parkway Welwyn Garden City AL8 6JA

    Received 24 May 2021
  7. Decided - Granted6/2022/0463/LAWP

    Certificate of lawfulness for the installation of an electricity substation and erection of 8 electric vehicle charging points

    The Bakehouse Bessemer Road Welwyn Garden City AL7 1HH

    Received 28 Feb 2022
  8. Decided - Granted6/2016/1742/HOUSE

    Replacement of front door and windows at front and side of property

    5 Brockswood Lane, Welwyn Garden City, AL8 7BA

    Received 22 Aug 2016
  9. Decided - Granted6/2017/1985/EM

    Erection of single storey, part two storey rear extension and alterations to openings

    57 Digswell Rise Welwyn Garden City AL8 7PT

    Received 1 Sept 2017
  10. Decided - Granted6/2018/0576/EM

    Erection of single storey rear and side extensions following the demolition of existing conservatory

    66 Brockswood Lane Welwyn Garden City AL8 7BQ

    Received 28 Feb 2018
  11. Decided - Granted6/2023/0721/HOUSE

    Erection of a single storey rear extension, raising of the main roof ridge, insertion of rear dormer and front facing roof lights to facilitate a loft conversion

    78 Hill Rise Cuffley Potters Bar EN6 4RH

    Received 30 Mar 2023
  12. Decided - Granted6/2020/0126/HOUSE

    Erection of a part single storey/ part two story rear extension

    2 Wheatbarn Welwyn Garden City AL7 2BN

    Received 20 Jan 2020
  13. Decided - Granted6/2025/2365/ADV

    Installation of a freestanding LED D6 advertising display

    Bell Bar Service Station Great North Road Bell Bar AL9 6DA

    Received 10 Nov 2025
  14. Decided6/2023/1095/TC

    T1-Crab Apple-Fell to ground level as it has outgrown its position

    106 Mill Green Road Welwyn Garden City AL7 3XE

    Received 24 May 2023
  15. Decided - Granted6/2020/0490/HOUSE

    Erection of part single, part two storey side extension

    1 Beech Close Hatfield AL10 8NT

    Received 20 Feb 2020
  16. Decided - Granted6/2020/2095/EM

    Relocate existing shed and erection of garden studio

    8 Parkway Close Welwyn Garden City AL8 6HJ

    Received 19 Aug 2020
  17. Decided - Granted6/2024/2177/EM

    Addition of two North facing rooflights, the conversion of the attic and associated minor internal alterations to facilitate an additional bedroom, office and storage space in the existing loft. Addition of two windows in the existing gables

    23 Pentley Park Welwyn Garden City AL8 7RT

    Received 12 Nov 2024
  18. Decided - Granted6/2017/1377/EM

    Fell 2 x Leyland Cypress trees

    17 Elm Gardens Welwyn Garden City AL8 6RX

    Received 26 Jun 2017
  19. Decided - Granted6/2017/0696/HOUSE

    Erection of two storey rear extension, single storey rear extension, single storey front 'infill' extension, replacement of existing garage door with windows, additional window to side elevation and creation of annex in detached building.

    3 Homewood Lane Northaw Potters Bar EN6 4PP

    Received 6 Apr 2017
  20. Decided - Granted6/2025/1038/EMT

    Front 1 x cherry to reduce by approximately 2m height and width (back to previous).

    35 Woodland Rise Welwyn Garden City AL8 7LJ

    Received 2 Jun 2025
  21. Decided - GrantedN6/2014/2541/TC

    Reduce Horse Chestnut tree by upto 3m

    43 Handside Lane, Welwyn Garden City, AL8 6SH

    Received 20 Nov 2014
  22. Decided - Granted6/2022/2231/PN8

    Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 3.00m in heights and 3.00m to the eaves.

    32 Glenwood Welwyn Garden City AL7 2JS

    Received 27 Sept 2022
  23. Decided - Refused6/2024/1145/LB

    Conversion of existing barn to form an annexe to the main dwelling

    Upper Cromer Hyde Farm Cromer Hyde Lane Lemsford Welwyn Garden City AL8 7XE

    Received 19 Jun 2024
  24. Decided - Granted6/2025/0223/LB

    Removal of existing sand and cement render on gable end of north elevation, re-lath with Riven oak laths and apply lime putty and finish coat

    Parkside Cottage 56 Mill Lane Welwyn AL6 9ES

    Received 10 Feb 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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