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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
31,725Searchable applications
303Recorded as pending
87%Approval rate · 26,494 approved or refused records
3,473Refused applications

23,021 approved · 3,473 refused · 1,675 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 19 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2016/1614/TPO

    T1,T2,T3,T4 :- Hornbeams - reduce and shape by 3-4 meters. T5 - Fell and replace with a cedar of lebanon. T6 - next door reduce branch over house by 2 meters - covered by TPO 203 (1995)

    2 Oaklands Rise Welwyn AL6 0RQ

    Received 8 Aug 2016
  2. Decided - GrantedW6/2015/0657/TE

    Removal of one Oak and two Hornbeam trees in rear garden

    16 Great Break, Welwyn Garden City, AL7 3EZ

    Received 26 Mar 2015
  3. Decided - Granted6/2016/1882/FULL

    Change of use of former Roche Products Factory (Class B offices, research and manufacturing) to provide 34 residential units (Class C3) across basement, ground and first to third floors, with associated external alterations including excavation to the rear lightwell of southern elevation, additional and altered fenestration to the northern and southern elevations, creation of additional car parking and associated landscaping, together with internal alterations including the subdivision and reconfiguration of floorspace, the introduction of 5 new spiral staircases and provision of servicing within the building

    Former Roche Products Site, 40 Broadwater Road, Welwyn Garden City, AL7 3FD

    Received 14 Sept 2016
  4. Decided - Granted6/2024/1629/HOUSE

    Erection of first floor extension with loft accommodation and rooflights to front and rear roofslopes, single storey rear extension, with other external alterations following demolition of single storey rear extension and outbuilding

    35 Codicote Road Welwyn AL6 9TT

    Received 27 Aug 2024
  5. Decided - Granted6/2024/0693/HOUSE

    Erection of single storey rear and side extension, installation of air conditioning unit and patio alterations

    64 Brookside Crescent Cuffley Potters Bar EN6 4QJ

    Received 12 Apr 2024
  6. Decided - Granted6/2025/1643/HOUSE

    Erection of a replacement side/rear extension and alterations to roof, installation of dormers and rooflight

    75 Tolmers Road Cuffley Potters Bar EN6 4JJ

    Received 31 Jul 2025
  7. Decided - Granted6/2023/0862/EMT

    Fell 1 x Beech

    UKPN Substation Shoplands Welwyn Garden City Hertfordshire AL8 7RJ

    Received 24 Apr 2023
  8. Decided - Granted6/2024/1358/EMT

    Two Ash trees in back garden prune back to previous reduction points, approximately 30% reduction

    12 The Old Drive Welwyn Garden City AL8 6TB

    Received 16 Jul 2024
  9. Decided - Refused6/2021/3528/FULL

    Erection of 1x bed detached dwelling following demolition of existing garage

    1 Chester Close Little Heath Potters Bar EN6 1DT

    Received 21 Dec 2021
  10. Decided - GrantedN6/2014/2308/FP

    Erection of rear conservatory

    27 Rivenhall End, Welwyn Garden City, AL7 2PJ

    Received 21 Oct 2014
  11. Decided - Granted6/2021/3093/COND

    Submission of details pursuant of condition 16 (piling and other intrusive groundworks) from planning permission 6/2020/2526/MAJ

    Land west of Learning Resource Centre, University of Hertfordshire, College Lane, Hatfield, AL10 9AB

    Received 28 Oct 2021
  12. Decided - Granted6/2020/0196/HOUSE

    Erection of part single, part two storey side and rear extension and installation of first floor side window following demolition of existing rear conservatory and side garden shed

    3 Longlands Road Welwyn Garden City AL7 3QD

    Received 27 Jan 2020
  13. Decided - GrantedW6/2013/0788/EM

    Erection of two storey side and rear extensions and alterations to front and side elevations

    59 Blakemere Road, WELWYN GARDEN CITY, AL8 7PQ

    Received 5 Apr 2013
  14. Decided - Granted6/2021/2999/TPO

    Removal of Scots pine. Reason. Excessive shading to garden of 27, tree also leans towards direction of houses, and as it grows the lean becomes more prominent. Pine needles cause excessive blocking to gutters of 27. In the area there are several other trees, which offer natural habitat for nests and birds. No nests have ever been witnessed in the scots pine. According to Welwyn Hatfield web-site there is a TPo group close by, unclear if this tree sits within it, hence permission being requested as precaution. Both the land owner (no 26) where tree is sited and neighbour 27 agree on removal.

    26 Parkside Welwyn AL6 9DQ

    Received 19 Oct 2021
  15. Decided - RefusedS6/2013/1551/FP

    Erection of detached dwelling with garage following demolition of existing

    The Spinney, Tylers Causeway, Newgate Street, Hertford, SG13 8QN

    Received 17 Jul 2013
  16. Decided - Refused6/2018/3101/HOUSE

    Erection of a single storey rear extension with raised patio

    26 The Gardens Brookmans Park Hatfield AL9 7UL

    Received 4 Dec 2018
  17. Decided - GrantedW6/2015/0870/TE

    Fell Conifer tree

    39 Sherrardspark Road, Welwyn Garden City, AL8 7JY

    Received 24 Apr 2015
  18. Decided - GrantedS6/2015/0212/LUP

    Certificate of Lawfulness for loft conversion with rear dormer and insertion of rooflights within the front and side roofslopes

    110 Old Rectory Drive, Hatfield, AL10 8FE

    Received 3 Feb 2015
  19. Decided - Granted6/2020/1996/FULL

    Demolition of 17 garages and erection of semi-detached pair of 2 x 2 bedroom houses with associated parking facilities and landscaping

    Garage Site Hazel Grove Hatfield AL10 9DZ

    Received 11 Aug 2020
  20. Decided - Granted6/2020/2439/PN8

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 2.81m in height and 2.81 to the eaves.

    3 South Drive Cuffley Potters Bar EN6 4HP

    Received 22 Sept 2020
  21. Decided - GrantedS6/2013/1619/FP

    Erection of a detached dwelling and garage following demolition of existing swimming pool and side extension

    1 Ashbury Close Hatfield AL10 9SQ

    Received 24 Jul 2013
  22. Decided - Granted6/2018/2850/HOUSE

    Retention of existing outbuilding

    84 High Dells Hatfield AL10 9HU

    Received 5 Nov 2018
  23. Decided - Granted6/2022/2902/HOUSE

    Erection of a single storey rear extension

    75 Lemsford Lane Welwyn Garden City AL8 6YN

    Received 23 Dec 2022
  24. Decided - Refused6/2023/0526/PN15

    Proposed MBNL 20m High HEL Phase 5 Tower on D9-4 roof foundation, 3.no equipment cabinets and associated works

    Welwyn Garden City Ambulance Station Ascots Lane Welwyn Garden City AL7 4HL

    Received 8 Mar 2023

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

    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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