England · Local authority

Welwyn Hatfield planning applications

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

Collected application statistics

Collected records · All available dates

40,297Searchable applications

283Recorded as pending

86%Approval rate · 33,821 approved or refused records

4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026

Planning information Planning and building Local plan Our Local Plan Pre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation Area Article 4 directions Article 4 Directions

Conservation areas and Article 4 directions

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.

Conservation areas9 mapped area records

Article 4 direction areasNo boundary records available in this collection

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.

More application records

Decided - RefusedS6/2007/0825/FP
ERECTION OF 2 STOREY FRONT EXTENSION & ALTERATIONS
High Ridge The Ridgeway Cuffley Potters Bar EN6 4BE
Received 30 May 2007
Appeal Decided - Allowed6/2018/1648/LB
Erection of single storey rear extension
16 Northaw Road West, Northaw, Potters Bar, EN6 4NR
Received 22 Jun 2018
Decided - Granted6/2025/0655/TPO
1 x Monkey Puzzle covered by TPO 352 - removal of 6 lower branches, dead branches and new growth (epicormic) on trunk
4 Sherrardspark Road Welwyn Garden City AL8 7JP
Received 4 Apr 2025
Decided - GrantedN6/2004/0216/FP
ERECTION OF SINGLE STOREY FRONT EXTENSION
28 Blakes Way Welwyn AL6 9RE
Received 16 Feb 2004
Decided - Granted6/2019/1921/PN8
Prior approval for the erection of a single storey rear extension measuring 3m in depth, 3.2m in height and 2.8m to the eaves
58 Briars Lane Hatfield AL10 8ET
Received 6 Aug 2019
Decided - Granted6/2023/0579/EMT
Reduce crown of lime tree back to previous cut
128 Handside Lane Welwyn Garden City AL8 6SZ
Received 14 Mar 2023
Decided - GrantedC6/1988/1184/FP
Extension to pool complex to provide public reception and additional changing areas
Sir Frederic Osborn School, Herns Lane, Welwyn Garden City, AL7 2AF
Received 1 Jan 1988
Decided - GrantedN6/2005/1522/FP
ERECTION OF GREEN HOUSE TO REAR GARDEN TO REPLACE EXISTING
26 Dellcott Close Welwyn Garden City AL8 7BD
Received 8 Dec 2005
Decided - Granted6/2025/2199/LAWP
Certificate of lawfulness for a single storey rear extension, new fence and gates following the demolition of existing side extensions.
Woodlands Bungalow The Ridgeway Cuffley Potters Bar EN6 4BJ
Received 15 Oct 2025
Decided - GrantedW6/2015/0971/EM
Conversion of garage to utility room
62 Valley Road, Welwyn Garden City, AL8 7DN
Received 7 May 2015
Decided - GrantedW6/2004/0620/EM
ERECTION OF REAR CONSERVATORY
8 Little Lake, Welwyn Garden City, AL7 4RT
Received 27 Apr 2004
Decided - GrantedN6/2008/2455/FP
RETENTION OF BRICK BOUNDARY WALL
25 KNELLA GREEN, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 3NL
Received 19 Dec 2008
Decided - Granted6/2017/2883/TPO
Removal of 4 Douglas fir trees, 2, 3, 4, and 5 covered by TPO 294 (2004) Dead & Dangerous
11 Wendover Drive Welwyn AL6 9LT
Received 12 Dec 2017
Decided - GrantedS6/2014/0572/FP
Erection of 4 bed end of terrace dwelling following demolition of existing shed
150 Dixons Hill Road, Welham Green, Hatfield, AL9 7DN
Received 18 Mar 2014
Decided - GrantedW6/2004/0214/EM
ERECTION OF SUMMER HOUSE
3 Honeycroft, Welwyn Garden City, AL8 6HR
Received 13 Feb 2004
Decided - Granted6/2021/2459/LAWP
Certificate of lawfulness for the erection of side porch following the demolition of existing porch
59 Garden Road Knebworth Woolmer Green SG3 6JZ
Received 23 Aug 2021
Decided - Granted6/2021/0701/EMT
Reduce 2x Pear and 1x Plum by 2.5m height and 1m width and reduce height of 1x Cork Oak by 1m
9 The Orchard Welwyn Garden City AL8 7PL
Received 3 Mar 2021
Decided - Granted6/2016/0869/HOUSE
New entrance staircase
6 Burleigh Way, Cuffley, Potters Bar, EN6 4LJ
Received 5 May 2016
Decided - GrantedN6/2009/2296/FP
ERECTION OF FRONT PORCH
110 SLOANSWAY, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1ND
Received 20 Oct 2009
Decided - Granted6/2016/2441/FULL
Erection of a two storey detached dwelling in rear garden of The Rowans
The Rowans Great North Road Hatfield AL9 5DB
Received 18 Nov 2016
Decided - Granted6/2023/0774/EM
Roof change between 1-6 Guessens
1 Guessens Court Welwyn Garden City AL8 6RB
Received 6 Apr 2023
Decided - Granted6/2020/0970/LAWP
Conversion of garage into habitable space
76 College Lane Hatfield AL10 9PQ
Received 29 Apr 2020
Decided - Granted6/2019/2180/EM
Erection of shed and hard standing
38 Ingles Welwyn Garden City AL8 7HH
Received 3 Sept 2019
Decided - GrantedN6/2007/1944/FP
ERECTION OF A SINGLE STOREY SIDE EXTENSION
8 THE COMMONS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4RP
Received 19 Dec 2007

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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Researching a proposal in Welwyn Hatfield Borough Council

Start 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

Guides to planning records

All planning guides

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.
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Published 16 Jul 2026Updated 13 Sept 2026
Understanding planning · 13 min read
Planning permission drawings: how to read plans
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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Published 6 Aug 2026Updated 13 Sept 2026
Property research · 13 min read
Planning approval rates: how to read council statistics
Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.
UK research
Published 13 Aug 2026Updated 13 Sept 2026

What these statistics cover

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