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.
England · Local authority
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
29,002 approved · 4,819 refused · 2,219 withdrawn.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: 10 Nov 2026. Counts reflect the last collected status; some records may be out of date.
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.
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.
West End Farm, West End Lane, Essendon, Hatfield, AL9 6AZ
Received 9 May 20162 The Paddock Hatfield AL10 0ED
Received 20 Jul 2018LAND TO THE REAR OF, 173A-187 KNELLA ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 3NT
Received 22 Aug 2008Beavers Lodge Farm, Tylers Causeway, Newgate Street, Hertford, SG13 8QN
Received 2 Apr 20131 Reynards Road Welwyn AL6 9TR
Received 29 Aug 2025Essendon Edge 5 Essendon Hill Essendon Hatfield AL9 6AJ
Received 1 Jan 1987Abdale House Warrengate Road North Mymms Hatfield AL9 7TX
Received 20 Dec 2019Royal Veterinary College Hawkshead Lane North Mymms Hatfield AL9 7TA
Received 31 Jan 200624 Brockswood Lane, Welwyn Garden City, AL8 7BG
Received 12 Nov 20043 Youngs Rise, Welwyn Garden City, AL8 6RT
Received 27 Jan 2006(no. 12) Digswell Lodge, Digswell Rise, Welwyn Garden City, AL8 7NU
Received 3 Nov 20153 Mandeville Rise, Welwyn Garden City, AL8 7JT
Received 18 Apr 201642 High Dells Hatfield AL10 9HU
Received 30 Sept 20245 Sewells Welwyn Garden City AL8 7AQ
Received 27 Apr 2018FORMER MITSUBISHI ELECTRIC (UK) LTD, TRAVELLERS LANE, HATFIELD, HERTFORDSHIRE, AL108XB
Received 12 Jul 200420 Turmore Dale Welwyn Garden City AL8 6HS
Received 9 May 201711 Woodside Road Digswell Welwyn AL6 0DS
Received 11 Aug 2016Turpins Manor 20 Turpins Chase Welwyn AL6 0RA
Received 2 Mar 200449 Fordwich Road, Welwyn Garden City, AL8 6EY
Received 9 Nov 2015124 Harmer Green Lane Digswell Welwyn Hertfordshire AL6 0ET
Received 3 Dec 202434 Kingsmead Cuffley Potters Bar EN6 4AN
Received 20 Aug 20184 Devon Mead Hatfield AL10 9GD
Received 2 Apr 20134 Hillside Welwyn Garden City AL7 4PZ
Received 18 Nov 202538 Reynards Road Welwyn AL6 9TP
Received 30 Dec 2020Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.
View all applicationsArea 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 alertStart 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
Understanding planning · 13 min read
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
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
Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.
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