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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
40,295Searchable applications
322Recorded as pending
86%Approval rate · 33,786 approved or refused records
4,816Refused applications

28,970 approved · 4,816 refused · 2,217 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 7 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/0430/ADV

    Installation of illuminated signage and logos mounted on building façade

    Hertfordshire Constabulary Stanborough Road Welwyn Garden City AL8 6XF

    Received 9 Mar 2026
  2. Decided6/2023/1655/TC

    Fell 1 x dead willow to ground level

    2 Mandeville Rise Welwyn Garden City AL8 7JU

    Received 9 Aug 2023
  3. Decided - Granted6/2024/2123/COND

    Submission of details pursuant of condition 1 (construction management plan) and 4 (contamination) on planning permission 6/2022/1853/MAJ

    Eisai Europe Limited European Knowledge Centre Mosquito Way Hatfield AL10 9SN

    Received 4 Nov 2024
  4. Decided - Granted6/2016/0745/EM

    Removal of dying and dangerous Rowan tree from the rear of the garden

    10 Pentley Close, Welwyn Garden City, AL8 7SH

    Received 20 Apr 2016
  5. Decided - Granted6/2020/0367/HOUSE

    Erection of a two storey side extension

    2 Starling Lane Cuffley Potters Bar EN6 4JX

    Received 10 Feb 2020
  6. Decided - GrantedS6/2009/1669/FP

    PROPOSED FIRST FLOOR SIDE EXTENSION AND TWO STOREY FRONT EXTENSION INCLUDING LOFT CONVERSION AND ROOF ALTERATIONS

    25 TOLMERS AVENUE, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4QA

    Received 3 Aug 2009
  7. Decided - Granted6/2024/1050/EM

    Replacement of roof

    19 Valley Road Welwyn Garden City AL8 7DH

    Received 5 Jun 2024
  8. Decided - Granted6/2016/2504/HOUSE

    Enclosure of existing covered area to rear of property with installation of bi-folding doors

    7 Densley Close Welwyn Garden City AL8 7JX

    Received 24 Nov 2016
  9. Decided - Granted6/2018/3280/HOUSE

    Erection of single storey rear extension with alterations to openings

    7 Pitsfield Welwyn Garden City AL8 7SJ

    Received 27 Dec 2018
  10. Decided - GrantedS6/2014/0608/FP

    Erection of front porch and loft conversion

    87 The Ridgeway, Cuffley, Potters Bar, EN6 4BG

    Received 24 Mar 2014
  11. Decided - Granted6/2023/1549/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension and loft conversion with rear dormer window and roof lights to front roof slope

    27 Astwick Avenue Hatfield AL10 9LB

    Received 26 Jul 2023
  12. Decided - Granted6/2018/1227/EM

    Erection of single storey rear extension. Demolition of part of the adjoining shed.

    78 Newfields Welwyn Garden City AL8 6YT

    Received 9 May 2018
  13. Decided - Granted6/2025/0565/HOUSE

    Part conversion of existing garage, raising the parapet, insertion of rooflights and alterations to the windows and doors at ground floor level to the rear elevation

    20 Guessens Road Welwyn Garden City AL8 6RA

    Received 25 Mar 2025
  14. Decided6/2026/1043/TC

    Fell 1 x European plum and 1 x common chokecherry.

    10 Rooks Close Welwyn Garden City AL8 6JT

    Received 15 Jun 2026
  15. Decided - Granted6/2020/1232/HOUSE

    Erection of two storey rear extension

    14 The Holt Welwyn Garden City AL7 2HU

    Received 2 Jun 2020
  16. Under Consideration6/2026/1545/COND

    Submission of details pursuant to Condition 1 (Construction Traffic Management Plan) on planning permission 6/2023/2483/FULL

    38 New Road Digswell Welwyn AL6 0AH

    Received 4 Sept 2026
  17. Decided - GrantedW6/2015/1321/EM

    Alterations to rear elevation from window to French doors and installation of two windows into side elevation

    13 Sherrardspark Road Welwyn Garden City AL8 7JW

    Received 22 Jun 2015
  18. Decided - Granted6/2017/0480/HOUSE

    Erection of a single storey rear extension, conversion of existing garage with new bay to front and new low level sloping eaves to perimeter of single storey area

    84 Brocket Road Welwyn Garden City AL8 7TU

    Received 13 Mar 2017
  19. DecidedN6/2008/0606/CD

    INCREASE CAPACITY OF EXISTING TREATMENT PLANT

    30 BURROWFIELD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4SR

    Received 21 Mar 2008
  20. Decided - Granted6/2019/0909/FULL

    Erection of single-storey studio and treatment room on land adjacent to garage, timber framed structure with roof lights

    Land to the rear of 2 Mardleybury Court Woolmer Green Knebworth SG3 6LP

    Received 15 Apr 2019
  21. Decided - Refused6/2017/0483/EM

    Replacement of existing garage door to roller shutter garage door.

    23 Woodland Rise Welwyn Garden City AL8 7LJ

    Received 13 Mar 2017
  22. Decided - GrantedS6/2005/0432/FP

    ERECTION OF 8 X 2 BEDROOM DWELLINGS, 6 X 3 BEDROOM DWELLINGS, 1 X 1 BED FLAT AND 2 X CLASS B1 UNITS, FOLLOWING DEMOLITION OF GARAGES

    Dunhams Court Yard Park Street

    Received 8 Apr 2005
  23. Decided - RefusedS6/2004/0774/FP

    ADDITION OF PORT-A-CABIN FOR OFFICE USE

    Mably House Lemsford Road Hatfield AL10 0DT

    Received 24 May 2004
  24. Decided - GrantedS6/2007/1845/LB

    ERECTION OF SINGLE STOREY AND FIRST FLOOR REAR EXTENSIONS

    18 Fore Street Hatfield AL9 5AH

    Received 12 Dec 2007

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

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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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