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
28,935 approved · 4,812 refused · 2,213 withdrawn.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 Counts reflect the last collected status; some records may be out of date.
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.
6 Rectory Gardens Hatfield AL10 8BG
Received 12 Oct 200547 Rivenhall End Welwyn Garden City AL7 2PL
Received 14 Mar 20246 Lytton Gardens Welwyn Garden City AL8 6EG
Received 18 Jan 2021Red Lion Hotel 88 Great North Road Hatfield AL9 5EU
Received 22 Mar 20076 Firway Welwyn AL6 0RD
Received 3 Mar 201463-65 New Road Digswell Welwyn AL6 0AL
Received 26 Jun 2019Brambles Briary Wood End Welwyn AL6 0TD
Received 17 Feb 2017The Willows, Marshmoor Lane, Welham Green, Hatfield, AL9 7HT
Received 16 Jan 2014Former Hatfield Aerodrome Site, Hatfield Avenue, Hatfield Business Park, Hatfield, AL10 9UA
Received 7 Nov 2017Former Hatfield Aerodrome Hatfield AL10
Received 20 Oct 2017LAND ADJACENT TO CAMPUS WEST CAR PARK, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6BX
Received 9 Oct 2008MCDONALDS RESTAURANTS LTD, 68 THE GALLERIA, COMET WAY, HATFIELD, HERTFORDSHIRE, AL10 0XY
Received 14 Dec 2009111 Handside Lane Welwyn Garden City AL8 6SP
Received 16 Aug 2022Former The Frythe 5 Digswell Hill Welwyn AL6 9AR
Received 12 Feb 201477 Hertford Road Digswell Welwyn AL6 0BU
Received 8 Dec 201434 Sherrardspark Road Welwyn Garden City AL8 7JS
Received 16 May 2019QUEENSWOOD SCHOOL, SHEPHERDS WAY, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 6NS
Received 8 Feb 201012 Sherrardspark Road, Welwyn Garden City, AL8 7JP
Received 9 Sept 2013103 Hatfield Road Little Heath Potters Bar EN6 1HZ
Received 31 Aug 2022Brocket Park Warren Farm Marford Road Lemsford Welwyn Garden City AL8 7XG
Received 15 Apr 2026108 Aldykes Hatfield AL10 8EE
Received 18 Nov 20199 Wolves Mere Woolmer Green Knebworth SG3 6JW
Received 14 Dec 2007Royal Veterinary College Hawkshead Lane North Mymms Hatfield AL9 7TA
Received 4 Apr 2007Ilkerton Bulls Lane Hatfield AL9 7AZ
Received 3 Mar 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.

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Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.

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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.
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