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
40,297Searchable 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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/2881/HOUSE

    Erection of a single storey side extension, construction of a new roof to create an additional floor including increase in the ridge height and construction of side dormer window. Alterations to windows and doors of the existing property.

    59 Garden Road Woolmer Green Knebworth SG3 6JZ

    Received 12 Dec 2017
  2. Decided - Granted6/2021/2799/TPO

    Description of work: 1) Crown reduce two Oak trees (TPO54 T1 and TPO54 T2) by up to 2m and thin out branches as per advice of tree surgeon. 2) Reduce branches on three Hornbeam trees (TPO54 GP1) by 30%

    33 Oaklands Rise Welwyn AL6 0RN

    Received 29 Sept 2021
  3. Decided - GrantedN6/2004/0349/FP

    ERECTION OF 2 SINGLE STOREY EXTENSIONS, AND MINOR ALTERATIONS TO REAR OF PROPERTY

    6 Oaklands Rise Welwyn AL6 0RL

    Received 10 Mar 2004
  4. Decided - Granted6/2018/0151/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    10 Bluebridge Avenue Brookmans Park Hatfield AL9 7RZ

    Received 12 Jan 2018
  5. Decided - Granted6/2018/0023/FULL

    Change of use from amenity land to residential

    47 Marley Road Welwyn Garden City AL7 4BT

    Received 4 Jan 2018
  6. Decided - Granted6/2025/0316/LAWP

    Certificate of lawfulness for hip to gable loft conversion with rear dormer and insertion of roof lights to existing front roof elevation, and erection of front porch.

    49 Oaklands Avenue Brookmans Park AL9 7UH

    Received 19 Feb 2025
  7. Decided - Granted6/2024/2212/HOUSE

    Installation of a front window and door to facilitate the conversion of the garage to habitable space and store/utility and erection of a linkway

    2 Flamingo Close Hatfield AL10 9LU

    Received 18 Nov 2024
  8. Decided - Granted6/2017/2600/EM

    Erection of replacement fence

    5 Little Rivers Welwyn Garden City AL7 1QJ

    Received 8 Nov 2017
  9. Decided - Withdrawn6/2020/2223/HOUSE

    Erection of single storey front and side extensions, two storey side and rear extensions with increased ridge height and loft conversion with front dormer window.

    7 Bradmore Way Hatfield AL9 7QY

    Received 1 Sept 2020
  10. Decided - Granted6/2025/0124/ADV

    Replacement shop frontage with installation of 2 x Fascia sign 2 x hoarding sign 1 x illuminated hoarding sign 1 x illuminated projecting sign 1 x illuminated powder coated aluminium sign

    Unit 1 Roe Green Centre Bishops Rise Hatfield AL10 9HE

    Received 24 Jan 2025
  11. Decided - GrantedN6/2007/1878/FP

    ERECTION OF FIRST FLOOR REAR AND SINGLE STOREY SIDE & REAR EXTENSION

    16 COWPER ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 3LS

    Received 7 Dec 2007
  12. Decided - GrantedN6/2014/1808/S73A

    Variation of condition 3 (opening hours) of planning permission N6/2014/0109/FP

    32 Howardsgate, Welwyn Garden City, AL8 6BJ

    Received 12 Aug 2014
  13. Decided - GrantedS6/2005/1445/LU

    CERTIFICATE OF LAWFULNESS (PROPOSED) FOR LOFT CONVERSION.

    38 Mulberry Mead Hatfield AL10 9EN

    Received 21 Nov 2005
  14. Decided - Granted6/2024/1785/FULL

    Installation of drive-through service window, removal of ramps and railings, enlargement of external service door, amendment to road layout to serve drive-through

    Unit 70 Galleria North Comet Way Hatfield AL10 0XR

    Received 16 Sept 2024
  15. Decided - GrantedN6/2013/2556/TC

    Removal of Willow tree

    19 Turmore Dale, Welwyn Garden City, AL8 6HT

    Received 25 Nov 2013
  16. Decided - Granted6/2017/0450/HOUSE

    Erection of rear conservatory

    1 Cotters Croft Welwyn Garden City AL7 4AZ

    Received 8 Mar 2017
  17. Decided - WithdrawnW6/2013/1899/TE

    Severing roots of Oak tree

    12 Sherrardspark Road, Welwyn Garden City, AL8 7JP

    Received 9 Sept 2013
  18. Decided - Granted6/2019/1109/HOUSE

    Erection of wrap around part first floor part two-storey side extension and part single part two storey rear extension

    57 Selwyn Crescent Hatfield AL10 9NW

    Received 8 May 2019
  19. Decided - GrantedN6/2004/0140/FP

    ERECTION OF SINGLE STOREY SIDE AND REAR EXTENSION

    74 Handside Lane Welwyn Garden City AL8 6SJ

    Received 29 Jan 2004
  20. Decided - RefusedN6/2013/2171/FP

    Change of use from (use class B1) to (use class D1)

    Unit 18 Martinfield, Welwyn Garden City, AL7 1HG

    Received 14 Oct 2013
  21. Decided - Granted6/2022/1751/LAWP

    Certificate of lawfulness for the construction of an additional storey to the existing dwellinghouse, pursuant to Prior Approval reference 6/2022/1390/PN27

    37 Codicote Road Welwyn AL6 9TT

    Received 26 Jul 2022
  22. Decided - Granted6/2021/2792/HOUSE

    Erection of single storey rear extension.

    10 Green Croft Hatfield AL10 0RB

    Received 28 Sept 2021
  23. Decided - GrantedS6/2015/0667/FP

    Erection of single storey rear extension

    41 Bramble Road Hatfield AL10 9RZ

    Received 27 Mar 2015
  24. Decided - Granted6/2015/2332/TPO

    Removal of False Acacia tree - Conservation Area.

    12 Rooks Hill, Welwyn Garden City, AL8 6ET

    Received 19 Nov 2015

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