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
28,760 approved · 4,791 refused · 2,199 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 29 Oct 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 Counts reflect the last collected status; some records may be out of date.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.
2 Swallow Gardens Hatfield AL10 8QR
Received 6 Mar 2019159 Tolmers Road, Cuffley, Potters Bar, EN6 4JP
Received 13 Feb 201517 Moorlands Welwyn Garden City AL7 4PY
Received 2 Oct 2014Link Drive Car Park Link Drive Hatfield AL10 8TY
Received 11 Jun 202453 De Havilland Close Hatfield AL10 0DS
Received 16 Aug 20202 Colesdale Cuffley Potters Bar EN6 4LQ
Received 21 Nov 2024Ayot Green Sawmill 27 Ayot Green Ayot St Peter Welwyn AL6 9BA
Received 15 Sept 20175 ACORN LANE, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4JQ
Received 19 Mar 2004111 Oakdale Welwyn Garden City AL8 7QS
Received 12 Apr 201845 Codicote Road Welwyn AL6 9TT
Received 30 Jan 202011 Thumbswood Welwyn Garden City AL7 4QE
Received 13 Aug 202014 Cole Green Lane Welwyn Garden City AL7 3PW
Received 13 Dec 20237 Fore Street Hatfield AL9 5AN
Received 7 Jan 2008GALLERIA OUTLET CENTRE, COMET WAY, HATFIELD, HERTFORDSHIRE, AL100XR
Received 22 Mar 2004W Waters And Sons Ltd Harpsfield Broadway Hatfield AL10 9TF
Received 12 Nov 200752 PEPLINS WAY, BROOKMANS PARK, HATFIELD, HERTS, AL9 7UU
Received 30 Apr 200957 Hill Rise, Cuffley, Potters Bar, EN6 4RX
Received 10 Apr 20152 Mardleybury Court Woolmer Green Knebworth SG3 6LP
Received 12 Nov 2019University of Hertfordshire, College Lane, Hatfield, AL10 9AB
Received 12 Jun 201484 Valley Road, WELWYN GARDEN CITY, AL8 7DP
Received 11 Jan 201319 to 23 Town Centre Hatfield AL10 0JT
Received 20 Mar 201824 Gooseacre, Welwyn Garden City, AL7 4NB
Received 24 Mar 201428 Maryland Hatfield AL10 8DZ
Received 15 Oct 2021LAND AT GREEN CLOSE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7ST
Received 10 Jun 2009Records 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.
Check collection coverage