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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
32,337Searchable applications
303Recorded as pending
87%Approval rate · 27,046 approved or refused records
3,541Refused applications

23,505 approved · 3,541 refused · 1,699 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 20 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2025/0796/HOUSE

    Erection of a single storey side/rear side and new porch followed by the demolition of existing lean to front porch

    8 The Meadway Cuffley Potters Bar EN6 4ES

    Received 28 Apr 2025
  2. Decided - Granted6/2023/2553/VAR

    Variation of condition 4 (drawings and plans) on listed building consent 6/2019/0218/LB to alter the flat layouts within the basement and lower the floors to achieve greater head room

    Northaw House Coopers Lane Northaw Potters Bar Hertfordshire EN6 4NG

    Received 21 Dec 2023
  3. Decided - Granted6/2025/1212/HOUSE

    Erection of a single storey rear extension and new detached garage with associated external amenity. Refurbishment and reconfiguration of existing Grade II listed building including demolition of existing conservatory, single storey brick extension and 2no detached garages. Installation of an Air Source Heat Pump, heritage guttering and electric gates and associated hard and soft landscaping.

    The Old Rectory 23-25 Mill Lane Welwyn AL6 9EU

    Received 17 Jun 2025
  4. Decided - Granted6/2024/2354/FULL

    Installation of air conditioning to 3 areas of the building. Installation of 3 compressor units on flat roof to support internal air conditioning units

    Barn Theatre Barn Close Welwyn Garden City AL8 6ST

    Received 9 Dec 2024
  5. Decided - Granted6/2023/2281/FULL

    Reuse and refurbishment of Building 3, to include a side and rear extension, for work associated with research and development and testing of new satellite technology on site, together with trenched cable linkage between gantry platform and Buildings 1, 2 and 3 and other associated works

    Brookmans Park Teleport Great North Road Hatfield AL9 6NE

    Received 13 Nov 2023
  6. Appeal Decided - Dismissed6/2019/2170/EM

    Replacement and enlargment of hardstanding

    45 Wren Wood Welwyn Garden City AL7 1QF

    Received 2 Sept 2019
  7. Decided - GrantedN6/2014/1933/TP

    Prune overhanging branches affecting 8 Wendover Lodge of Copper Beech Tree covered by TPO44 T4 to give clearance of building by 1.5m only

    Wendover Lodge Church Street Welwyn AL6 9LR

    Received 1 Sept 2014
  8. Decided - GrantedW6/2013/1786/EM

    Erection of sky dish to rear elevation

    45 Longcroft Lane, Welwyn Garden City, AL8 6EB

    Received 19 Aug 2013
  9. Decided - Refused6/2019/2440/COND

    Submission of details pursuant to condition 8 (Preliminary Ecological Assessment) 9 (Landscape and Ecology Management Plan) and 11 (drainage scheme) on planning permission 6/2018/2943/MAJ

    Royal Veterinary College Hawkshead Lane North Mymms Hatfield AL9 7TA

    Received 2 Oct 2019
  10. Decided - Granted6/2022/1067/HOUSE

    Erection of a part single storey part two storey rear extension, first floor side extension and development of roof to form rear dormer with gable end and insertion of three roof lights

    51 Peplins Way Brookmans Park AL9 7UR

    Received 9 May 2022
  11. Decided - Granted6/2024/2071/TPO

    1 x yew to crown reduce by 25% (covered by TPO 194)

    1 Broadleaf Grove Welwyn Garden City AL8 7AZ

    Received 28 Oct 2024
  12. Decided - Granted6/2020/2535/LAWE

    Certificate of lawfulness for the existing annexe which is in use as a self-contained dwelling.

    36 Firs Wood Close Northaw Potters Bar EN6 4BY

    Received 1 Oct 2020
  13. Decided - Granted6/2020/0877/HOUSE

    Erection of a first floor side extension and installation of window to facilitate conversion of garage

    119 The Ryde Hatfield AL9 5DP

    Received 15 Apr 2020
  14. Decided - Granted6/2020/3038/EMT

    Reduce 2 x Apple trees by 3m

    159 Handside Lane Welwyn Garden City AL8 6TA

    Received 17 Nov 2020
  15. Decided - Granted6/2021/2428/HOUSE

    Erection of single storey rear extension.

    203 Heronswood Road Welwyn Garden City AL7 3JH

    Received 18 Aug 2021
  16. Decided - GrantedN6/2013/1840/TC

    Reduce Oak tree by up to 40% on the building side and 25% on the road side

    Asquith House, Guessens Road, Welwyn Garden City, AL8 6QA

    Received 16 Aug 2013
  17. Decided - Refused6/2021/1522/EMH

    Installation of solar panels on front elevation of roof to supply self-generated electricity for the household.

    315 Knightsfield Welwyn Garden City AL8 7NJ

    Received 12 May 2021
  18. Decided - Granted6/2015/1900/COND

    Approval of details reserved by condition 5 (materials) on planning permission N6/2015/0988/FP

    11 Wendover Drive Welwyn AL6 9LT

    Received 4 Sept 2015
  19. Decided - Granted6/2021/2849/EM

    Replacement of existing porch roof with pitched tiles on wooden frame

    36 High Oaks Road Welwyn Garden City AL8 7BH

    Received 4 Oct 2021
  20. Decided - Granted6/2022/2556/HOUSE

    Erection of single storey front extension following demolition of existing porch

    210 Howlands Welwyn Garden City AL7 4HF

    Received 8 Nov 2022
  21. Decided - GrantedN6/2010/0284/LU

    CERTIFICATE OF LAWFULNESS FOR PROPOSED EXTENSIONS TO EXISTING DWELLING

    THE HOLDINGS, BROCKET ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7TU

    Received 12 Feb 2010
  22. Decided - GrantedN6/2013/1988/FP

    Erection of two storey rear and single storey side extensions

    21A Canonsfield Welwyn AL6 0QB

    Received 17 Sept 2013
  23. Decided - GrantedW6/2015/1323/EM

    Erection of part two storey and part single storey rear extensions

    19 Russellcroft Road Welwyn Garden City AL8 6QX

    Received 19 Jun 2015
  24. Decided - GrantedS6/2015/0211/FP

    Retention of roof slates and relocation of front door and alterations to bathroom window in dormer

    7 Brookside Crescent, Cuffley, Potters Bar, EN6 4QW

    Received 3 Feb 2015

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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