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
29,984Searchable applications
307Recorded as pending
87%Approval rate · 24,920 approved or refused records
3,303Refused applications

21,617 approved · 3,303 refused · 1,594 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 18 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026

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 - GrantedN6/2014/2517/LB

    Removal of current non-permeable paint and replace with a permeable paint

    The Old Post Office, Hill Farm Lane, Ayot St Lawrence, Welwyn, AL6 9BT

    Received 18 Nov 2014
  2. Decided - Granted6/2018/0575/TPO

    1- Oak tree. Situated on corner of flats 1-5.Removal of epicormic growth to approximately 8m (First Branch). This will elevate contact with footfall using path. 2- Crown Reduce hornbeams by 25%. Crown lift by 7m. This will increase light into the dwelling and continue historical management of the species. 3-Crown thin oak tree by 20%.Situated on boundary of Oak Piece Court. Aimed to reduce foliage falling over parking area. - covered by TPO 535 (2016)

    3 Avenue Court Welwyn AL6 0XF

    Received 26 Feb 2018
  3. Decided6/2019/0449/TPO

    Fell 1 x Laburnum tree to height of fence/shed - covered by conservation area

    2 Marsden Road Welwyn Garden City AL8 6YF

    Received 27 Feb 2019
  4. Decided - Granted6/2024/2137/FULL

    Installation of 6 no. antenna, 1 no. GPS Module and ancillary radio equipment onto new and existing steelwork along with ancillary development thereto following the removal of 3 no. antenna

    Welwyn Garden City TE Wigmores North Welwyn Garden City AL8 6PH

    Received 6 Nov 2024
  5. Decided - Granted6/2026/1306/LAWP

    Certificate of lawfulness for the change of use of the front office portion of Unit 4 to a daycare/crèche facility, to include an internal mezzanine, within Use Class E.

    184 Unit 4 St Albans Road West Hatfield AL10 0TF

    Received 27 Jul 2026
  6. Decided - Granted6/2016/1533/EM

    1 x Ash to remove ivy and reduce by 4m on height and 3m on width, 1 x Field maple to remove ivy and reduce by 3m on height and 2.5m on width, 1 x Crab apple to fell to ground level, 1x Laburnum fell to ground level

    33 Applecroft Road, Welwyn Garden City, AL8 6JZ

    Received 26 Jul 2016
  7. Decided - GrantedW6/2014/0252/EM

    Formation of vehicle hardstanding

    35 Haldens, Welwyn Garden City, AL7 1DH

    Received 12 Feb 2014
  8. Decided - Granted6/2025/1524/HOUSE

    Erection of single storey rear extension

    The Thrushlings 4 Thrush Lane Cuffley Potters Bar EN6 4JT

    Received 16 Jul 2025
  9. Decided6/2019/2867/TC

    Reduce 1 x Cherry by 2.5m width and 1.5m height

    76 Parkway Welwyn Garden City AL8 6HH

    Received 13 Nov 2019
  10. Decided - Granted6/2016/1385/HOUSE

    Erection of single storey front porch extension, conversion of attic to habitable space, installation of rear facing dormer windows and new front and rear roof lights. Part conversion of North East and South West Wings of garage following demolition of single storey rear conservatory

    29 The Avenue Welwyn AL6 0PW

    Received 8 Jul 2016
  11. Decided - GrantedN6/2015/0939/FP

    Erection of first floor side extension, rear single storey extension and front porch following demolition of existing porch

    2 Broadfield Road Woolmer Green Knebworth SG3 6LZ

    Received 1 May 2015
  12. Decided - Granted6/2021/1981/HOUSE

    Demolishing existing conservatory and construction of a single storey kitchen / utility extension.

    31 New Road Knebworth SG3 6LA

    Received 29 Jun 2021
  13. Appeal Decided - AllowedN6/2014/1964/FP

    Erection of first floor side and rear extensions

    4 Hyde Valley, Welwyn Garden City, AL7 4NA

    Received 3 Sept 2014
  14. Decided - Refused6/2016/0927/EM

    Landscaping changes to front garden to include extension to car parking area and the laying of loose stones and paving stones to replace grassed area

    13 Springfields, Welwyn Garden City, AL8 6XS

    Received 11 May 2016
  15. Decided6/2017/1994/TPO

    T1 Oak Reduce by up to 2.5m all over plus crown lift to 4m; T2 - Oak Fell; T3 - prune to Clear overhead lines by up to 2m - Conservation Area

    24 Roundwood Drive Welwyn Garden City AL8 7JZ

    Received 5 Sept 2017
  16. Decided - Refused6/2023/1211/EMT

    T1 - Silver birch tree - trim the large tree by 50% as large roots are lifting the concrete slabs of the drive and found under the path to the house

    162 Thistle Grove Welwyn Garden City AL7 4AQ

    Received 7 Jun 2023
  17. Decided - Granted6/2016/1910/TPO

    Tree works - Conservation Area

    36 Longcroft Lane, Welwyn Garden City, AL8 6EF

    Received 15 Sept 2016
  18. Decided - Granted6/2022/0348/HOUSE

    Erection of single storey rear extension

    75 Broomhills Welwyn Garden City Hertfordshire AL7 1RE

    Received 14 Feb 2022
  19. Decided - Granted6/2018/3118/LAWE

    Certificate of lawfulness for retention of existing Sui Generis Use

    12 The Arcade Hatfield AL10 0JY

    Received 6 Dec 2018
  20. Decided - Withdrawn6/2018/0763/FULL

    Reconfiguration of floorspace to accommodate installation of ancillary travel agency concession (Class A1) within existing A1 retail unit.

    Next PLC Unit 1A Oldings Corner Retail Park Comet Way Hatfield AL9 5JU

    Received 21 Mar 2018
  21. Decided - Granted6/2019/2740/FULL

    Installation of 62 metres of 1.8m palisade fencing

    Land adjacent to 42 Homestead Court Welwyn Garden City AL7 4LZ

    Received 30 Oct 2019
  22. Decided - Granted6/2017/2846/HOUSE

    Erection of a part single-storey, part two-storey rear extension following demolition of existing outbuilding

    80 Somers Road Welham Green Hatfield AL9 7PY

    Received 6 Dec 2017
  23. Decided - GrantedS6/2014/1696/FP

    Erection of 4 detached dwellings with access from Kingsmead following demolition of 19 Kingsmead

    Land at and to the rear of19 Kingsmead, Cuffley, Potters Bar, EN6 4AN

    Received 28 Jul 2014
  24. Decided - Refused6/2019/0276/HOUSE

    Erection of front garden dwarf wall with steel railings and electric gates and installation of two new accesses following removal of existing

    Just House Coopers Lane Northaw Potters Bar EN6 4NJ

    Received 7 Feb 2019

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.

  • 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.

  • 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.

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.

Check collection coverage