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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
40,297Searchable applications
283Recorded as pending
86%Approval rate · 33,821 approved or refused records
4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 9 Nov 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 Counts reflect the last collected status; some records may be out of date.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 - Withdrawn6/2021/0446/EM

    Conversion of garage to habitable space

    163 Boundary Lane Welwyn Garden City AL7 4EQ

    Received 11 Feb 2021
  2. Decided - GrantedS6/2009/1308/FP

    ERECTION OF FIRST FLOOR SIDE EXTENSION, SINGLE STOREY REAR EXTENSION AND FORMATION OF NEW BAY WINDOW TO FRONT ELEVATION

    67 WARRENGATE ROAD, NORTH MYMMS, HATFIELD, HERTFORDSHIRE, AL9 7TT

    Received 18 Jun 2009
  3. Decided - Granted6/2020/0921/HOUSE

    Erection of single storey rear extension and garage conversion

    41 Cypress Avenue Welwyn Garden City AL7 1HN

    Received 23 Apr 2020
  4. Decided - Granted6/2018/1880/COND

    Submission of details pursuant to condition 1,2&3 (Material Samples) on planning application 6/2017/2406/LB

    Ayot Cottage Hill Farm Lane Welwyn AL6 9BT

    Received 18 Jul 2018
  5. Decided - Granted6/2017/0927/PN14

    Prior Approval for demolition of two storey modular building (The Yorkon Building) to be grassed until redevelopment

    University of Hertfordshire Hatfield AL10 9JL

    Received 4 May 2017
  6. Appeal Decided - DismissedN6/2006/0051/FP

    ERECTION OF TWO STOREY & SINGLE STOREY REAR EXTENSION AND FRONT PORCH EXTENSION

    95 Attimore Road Welwyn Garden City AL8 6LG

    Received 16 Jan 2006
  7. Decided - Refused6/2018/1617/FULL

    Erection of a five bedroom detached dwelling with detached double garage

    6 Briary Wood End Land at Welwyn AL6 0TD

    Received 19 Jun 2018
  8. Decided - Granted6/2015/2210/PN15

    Replacement of monopole and installation of Pogona cabinet

    Stanborough Road Welwyn Garden City Hertfordshire AL8 6XE

    Received 28 Oct 2015
  9. Decided - GrantedS6/2008/2383/LB

    REPLACEMENT FIREPLACE WITH A WOOD BURNING STOVE

    The Old Cottage Green Lanes Hatfield AL10 9BH

    Received 3 Dec 2008
  10. Decided - Granted6/2020/3035/TPO

    T10 Oak Tree - Reduce in size by 20% (including small branches at its base) and remove deadwood

    5 Hanyards Lane Cuffley Potters Bar EN6 4AS

    Received 17 Nov 2020
  11. Decided - RefusedS6/2010/0264/FP

    PROPOSED GARAGE AND STORE TO REAR OF EXISTING DWELLING

    17 Chantry Lane Hatfield AL10 9HS

    Received 11 Feb 2010
  12. Decided - Granted6/2023/1931/EM

    Erection of a single storey, part two storey rear extension with subdivision of plot to facilitate creation of end of terrace dwelling, Electric vehicle Charging points, Electric scooter/bike charging and storage

    189 Boundary Lane Welwyn Garden City AL7 4EJ

    Received 19 Sept 2023
  13. Decided - GrantedC6/1988/7012/AD

    Illuminated and non-illuminated signs

    The Cottage Public House, Church Road, Welwyn Garden City, AL8 6PR

    Received 1 Jan 1988
  14. Decided - Granted6/2020/0522/HOUSE

    Erection of a single storey rear extension

    18 Melbourne Court Welwyn Garden City AL8 6LL

    Received 24 Feb 2020
  15. Decided - Granted6/2016/0892/HOUSE

    Erection of single storey rear UPVC conservatory following the demolition of the existing single storey rear conservatory

    18 Beechfield Road, Welwyn Garden City, AL7 3RF

    Received 9 May 2016
  16. Decided - Granted6/2022/2646/LAWP

    Certificate of lawfulness for single storey side extension, replacement of porch roof, alterations to existing openings and insertion of one front roof light

    18 Sycamore Avenue Hatfield Hertfordshire AL10 8LZ

    Received 21 Nov 2022
  17. Decided - GrantedS6/2008/1330/TP

    REDUCE CROWN OF ASH TREE T3 BY 20% COVERED BY TPO 215

    100 Chelwood Avenue Hatfield AL10 0RE

    Received 16 Jul 2008
  18. Decided - Granted6/2026/1081/EMT

    Fell 1 x apple tree. Fell 1 x Himalayan birch.

    23 Dellcott Close, Welwyn Garden City, AL8 7BB

    Received 22 Jun 2026
  19. Decided - Granted6/2017/1505/HOUSE

    Erection of rear infill extension with bay window

    4 Homewood Avenue Cuffley Potters Bar EN6 4QG

    Received 10 Jul 2017
  20. Decided - Granted6/2024/0224/TPO

    G1- 9 x Poplar trees to fell to 7ft (2.1m) stump.

    Barnet and District Angling Club Shepherds Way Brookmans Park AL9 6NJ

    Received 5 Feb 2024
  21. Decided - GrantedS6/2014/2560/FP

    Erection of a single storey rear extension

    63 Campion Road Hatfield AL10 9FA

    Received 24 Nov 2014
  22. Decided - GrantedS6/2004/0226/FP

    CHANGE OF USE FROM AMENITY LAND TO RESIDENTIAL GARDEN

    LAND ADJOINING, 134 STONECROSS ROAD, HATFIELD, HERTFORDSHIRE, AL100HS

    Received 12 Feb 2004
  23. Decided - GrantedW6/2008/1937/EM

    ERECTION OF SINGLE STOREY REAR EXTENSION, INSERTION OF THREE DORMER WINDOWS IN REAR ELEVATION. ALTERATION TO HEIGHT OF GARAGE AND ALTERATION TO FENESTRATION

    41 SHERRARDSPARK ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7LD

    Received 8 Oct 2008
  24. Decided - Granted6/2025/2121/TPO

    Oak tree T4 crown reduction 2-2.5m and crown thinning of approx 15% the single large protected tree due to proximity and overhang of neighbouring property, TPO 108

    9 Mardley Wood Welwyn AL6 0UY

    Received 6 Oct 2025

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

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How to search planning applications

Guides to planning records

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    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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