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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 8 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 Counts reflect the last collected status; some records may be out of date.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.
1 Ashbury Close Hatfield AL10 9SQ
Received 7 May 20132A Moorlands, Welwyn Garden City, AL7 4PP
Received 19 Jul 200416 Whitethorn Welwyn Garden City AL7 3EX
Received 2 Nov 202012 Broadfield Road Woolmer Green Hertfordshire SG3 6LZ
Received 20 Feb 202338 Osborne Road Little Heath Potters Bar EN6 1SF
Received 14 Sept 202320 Briary Wood Lane Welwyn AL6 0TF
Received 25 Nov 200413 Holwell Court, Hatfield, AL9 5RL
Received 1 Jan 19881 The Grove, Brookmans Park, Hatfield, AL9 7RL
Received 24 Sept 201333 Bridge Road Welwyn Garden City AL8 6UG
Received 12 Jul 202225 CARBONE HILL, NORTHAW, POTTERS BAR, HERTFORDSHIRE, EN6 4PN
Received 2 Sept 2009TELEPHONE EXCHANGE, WIGMORES NORTH, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6PH
Received 2 Oct 2007109 Woodhall Lane Welwyn Garden City AL7 3TP
Received 20 Oct 2021REAR OF BUILDING 6 T MOBILE, HATFIELD BUSINESS PARK, COMET WAY, HATFIELD, HERTFORDSHIRE
Received 2 Feb 200414 Firway Close Welwyn AL6 0RE
Received 13 Feb 200482 PINE GROVE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7BW
Received 2 Oct 2009192 Handside Lane Welwyn Garden City AL8 6TD
Received 22 Oct 202128 Sutherland Avenue, Cuffley, Potters Bar, EN6 4EQ
Received 17 Nov 20147 Elmwood Welwyn Garden City AL8 6LD
Received 29 Jul 20261 COLESDALE, CUFFLEY, HERTS, EN6 4LQ
Received 5 Jun 200827 The Avenue Welwyn AL6 0PW
Received 4 Dec 201212 MANDEVILLE RISE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JU
Received 28 Oct 200953 Homewood Avenue Cuffley Potters Bar EN6 4QQ
Received 20 Aug 202019 Hay Wains Woolmer Green Hertfordshire SG3 6HW
Received 16 Jan 202314 Mymms Drive Brookmans Park Hatfield AL9 7AF
Received 18 May 2007Records 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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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