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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 9 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 Counts reflect the last collected status; some records may be out of date.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.
38 Thornton Road Little Heath Potters Bar EN6 1JH
Received 31 Mar 201721 Coneydale, WELWYN GARDEN CITY, AL8 7RX
Received 15 Jan 2013193 Thistle Grove, Welwyn Garden City, AL7 4AG
Received 21 Jan 201414 Hilltop Way Hatfield AL10 8FH
Received 2 May 202313 Church Street Welwyn AL6 9LN
Received 8 Dec 201713 Tolmers Gardens, Cuffley, Potters Bar, EN6 4JE
Received 28 Jan 201912 Little Youngs Welwyn Garden City AL8 6SL
Received 12 Feb 20181 Chestnut Walk Welwyn AL6 0SB
Received 18 Aug 202135 Calder Avenue, Hatfield, AL9 7AH
Received 5 May 20091-12 Green Close, Brookmans Park, Hatfield, AL9 7ST
Received 23 Oct 20138 Sherrardspark Road Welwyn Garden City AL8 7JP
Received 10 Oct 202437 Church Street Welwyn AL6 9LS
Received 25 Sept 20186 Dognell Green Welwyn Garden City AL8 7BL
Received 20 Sept 2022226 Thistle Grove Welwyn Garden City AL7 4AL
Received 30 Sept 202516 Woodlands, Brookmans Park, Hatfield, AL9 7AN
Received 1 May 2015Royal Veterinary College Hawkshead Lane North Mymms Hatfield AL9 7TA
Received 17 Mar 2006288 Knightsfield Welwyn Garden City AL8 7NQ
Received 9 Apr 20152A Peplins Way, Brookmans Park, Hatfield, AL9 7UU
Received 9 Dec 20191 Perrywood, Walden Road Welwyn Garden City AL8 7PZ
Received 26 Apr 2019Forest Hills, Newgate Street Village, Hertford, SG13 8RA
Received 6 Oct 201410 Upland Drive, Brookmans Park, Hatfield, AL9 6PS
Received 20 May 2016102 Knightsfield, Welwyn Garden City, AL8 7HB
Received 1 Nov 201314 Moorend Welwyn Garden City AL7 4QL
Received 30 Jun 2026292 KNIGHTSFIELD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7NQ
Received 19 Aug 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.

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