PlanningTrack
Get started

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
40,250Searchable applications
321Recorded as pending
86%Approval rate · 33,746 approved or refused records
4,812Refused applications

28,934 approved · 4,812 refused · 2,213 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 6 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 Counts reflect the last collected status; some records may be out of date.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. Appeal Decided - Allowed6/2017/0166/HOUSE

    Erection of 2 storey rear extension, following removal of existing conservatory and installation of 2 rooflights.

    19 Oak Road Woolmer Green Knebworth SG3 6LS

    Received 31 Jan 2017
  2. Decided6/2024/0116/TC

    G1 - Group of ash to remove 1 x leaning stem to ground level, reduce remaining by approx 3m height & width. T1 & T2 - 2 x Sycamore to reduce by approx 3-4 meters height & 2-3m in width. T3 - 1 x Sycamore to cut back lateral branches from property by 2m - Reduce laterals to provide a suitable clearance from property. T4 - 1 x Ash to reduce by approx 3m height & width.

    42-63 Guessens Court Welwyn Garden City AL8 6RB

    Received 22 Jan 2024
  3. Decided - Refused6/2016/0492/LAWP

    Certificate of lawfulness for the proposed erection of detached garage to rear of property following demolition of existing garage

    20 Reynards Road Welwyn AL6 9TP

    Received 24 Mar 2016
  4. Appeal Decided - Allowed6/2023/2066/HOUSE

    Erection of a rear conservatory

    16 The Wade Welwyn Garden City AL7 4LG

    Received 10 Oct 2023
  5. Decided - GrantedW6/2014/0412/EM

    Formation of vehicle crossover and hardstanding

    36 Colgrove, Welwyn Garden City, AL8 6HU

    Received 25 Feb 2014
  6. Decided - Granted6/2023/0637/PN8

    Prior approval for the erection a single storey rear extension measuring 4 metres in depth, 2.82 metres in height and 2.82 metres to the eaves

    85 Garden Avenue Hatfield AL10 8LH

    Received 22 Mar 2023
  7. Decided - Granted6/2017/2901/HOUSE

    Conversion of existing garage

    25 Church Lane Northaw Potters Bar EN6 4NX

    Received 14 Dec 2017
  8. Decided - RefusedN6/2013/0658/LUP

    Proposed erection of canopy at rear of property

    6 New Road Woolmer Green Knebworth SG3 6JX

    Received 26 Mar 2013
  9. Decided - GrantedS6/2007/0404/FP

    ERECTION OF A SINGLE STOREY REAR EXTENSION AND FRONT PORCH

    2 Sycamore Avenue Hatfield AL10 8LZ

    Received 12 Mar 2007
  10. Decided - Granted6/2018/1674/COND

    Submission of details pursuant to condition 5 (site investigation and post investigation assessment) on planning permission 6/2017/0624/MAJ

    Plot 5000 Hatfield Business Park Mosquito Way Hatfield AL10 9EZ

    Received 25 Jun 2018
  11. Decided - Granted6/2019/1208/MAJ

    Erection of a new crematorium and machinery store, to include new car parking provision and landscaping following demolition of existing chapel, machinery store, lodge house and central colonnade

    The Lawn Cemetery Southway Hatfield AL10 8HS

    Received 16 May 2019
  12. Decided - Granted6/2016/1036/TPO

    Reduce and shape crown of Douglas Fir tree (T4) by 4m covered by TPO 294

    3 Wendover Drive Welwyn AL6 9LT

    Received 25 May 2016
  13. Decided - GrantedN6/2006/0472/FP

    ENLARGEMENT OF 4No. RESIDENTIAL CAR PARKS TO PROVIDE ADDITIONAL PARKING SPACES

    82-125 KNIGHTSFIELD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7HB

    Received 7 Apr 2006
  14. Decided - Granted6/2017/0711/COND

    Submission of details pursuant to condition 2 (materials), 3 (hard & soft landscaping), 5 (construction method statement) and 6 (site cross-sections), of planning permission 6/2016/1286/FULL.

    19 Briary Wood Lane Welwyn AL6 0TE

    Received 7 Apr 2017
  15. Decided - GrantedW6/2013/1043/EM

    Erection of single storey side extension following demolition of existing garage

    12 Willow Grove, WELWYN GARDEN CITY, AL8 7NA

    Received 13 May 2013
  16. Decided - RefusedN6/2008/1305/FP

    ERECTION OF FIRST FLOOR SIDE EXTENSION

    279 KNIGHTSFIELD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7RA

    Received 29 Jul 2008
  17. Decided - GrantedW6/2014/1218/TE

    Reduce 1 Oak tree, 4 Sycamore trees, 1 Apple tree, 2 Pine trees and 3 conifer trees by 40% plus removal of dead branches

    9 Brockett Close, Welwyn Garden City, AL8 7BN

    Received 6 Jun 2014
  18. Decided - RefusedN6/2006/0686/FP

    ERECTION OF TWO STOREY SIDE AND REAR EXTENSIONS, AND SINGLE STOREY REAR EXTENSION

    22 Maran Avenue Welwyn AL6 9HS

    Received 30 May 2006
  19. Appeal Decided - DismissedS6/2008/0612/FP

    ERECTION OF FIRST FLOOR FRONT EXTENSIONS, AND ALTERATIONS TO ROOF INCORPORATING ROOFLIGHTS TO FRONT AND REAR ELEVATION.

    109 TOLMERS ROAD, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4JL

    Received 26 Mar 2008
  20. Decided - WithdrawnW6/2008/0402/EM

    REMOVAL OF CHIMNEY STACK

    254 DANIELLS, WELWYN GARDEN CITY, HERTS, AL7 1QE

    Received 26 Feb 2008
  21. Decided - GrantedN6/2014/2700/TC

    Crown reduce Sycamore tree by upto 2m

    31A Church Street Welwyn AL6 9LW

    Received 16 Dec 2014
  22. Decided - Granted6/2016/0464/FULL

    Erection of 1no three bedroom dwellinghouse following the demolition of 2no garage blocks

    Land off Homestead Lane, Welwyn Garden City, AL7 4NX

    Received 21 Mar 2016
  23. Decided - Granted6/2020/1934/LB

    Alter colour of front door and exterior window sills, level first floor floorboards, remove partition walls and door between airing cupboard and bathroom in order to extend the bathroom and create a new door way to the bathroom from the landing.

    Parkside House 58 Mill Lane Welwyn AL6 9ES

    Received 5 Aug 2020
  24. Decided - GrantedW6/2014/0073/EM

    Proposed erection of part double and part single storey side and rear extension

    19 Dayemead, Welwyn Garden City, AL7 4RX

    Received 21 Jan 2014

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Applications by postcode area

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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.

    UK research
    Published Updated

  • 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.

    UK research
    Published Updated

  • 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.

    UK research
    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.

Check collection coverage

More planning authorities in England

Browse all authorities