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

40,146Searchable applications

300Recorded as pending

86%Approval rate · 33,676 approved or refused records

4,802Refused applications

28,874 approved · 4,802 refused · 2,208 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 2 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2022/0633/HOUSE
Erection of single storey garage extension, two storey front extension, two storey side extension and single storey rear extension with conversion of roof space into habitable space, alterations to roof formation, fenestration and external materials to dwelling, and installation of 80 solar panels to the rear garden.
35 The Ridgeway Cuffley Potters Bar EN6 4BB
Received 17 Mar 2022
Appeal Decided - Dismissed6/2016/1934/HOUSE
Retention of detached garage, and alterations to roof to reduce the height
6B Hill Rise, Cuffley, Potters Bar, EN6 4EE
Received 16 Sept 2016
Decided - Refused6/2024/0106/FULL
Erection of a single storey side and rear extension to link existing outbuilding with main dwelling
11 Four Acres Welwyn Garden City AL7 4NW
Received 15 Jan 2024
Decided - Granted6/2020/2024/EMT
1 x Cherry plum to reduce by 3m height & 1.5m width
3 Handside Close Welwyn Garden City AL8 6SR
Received 12 Aug 2020
Decided - Granted6/2018/1879/HOUSE
Erection of a single storey rear extension. Raising of ridge height, alteration from hip to gable, construction of front gable with front and rear dormer windows to provide habitable accommodation in loft space. Construction of basement (lower ground floor). Construction of patio area with steps and glazed balustrade around patio. Construction of parking area to front garden.
24 Heathbrow Road Welwyn AL6 0QG
Received 18 Jul 2018
Decided6/2021/2424/TC
Multi-stemmed ash tree. Reduce height by 8-10 feet. Trim sides to balance.
125 Handside Lane Welwyn Garden City AL8 6TA
Received 17 Aug 2021
Decided - Granted6/2023/1966/HOUSE
Enlargement of existing driveway and installation of an electric car charging point
11 Attimore Road Welwyn Garden City AL8 6LH
Received 25 Sept 2023
Decided - Granted6/2017/2342/FULL
Erection of a temporary automobile showroom for up to two years with associated access, parking and landscaping.
Plot 4100 Gypsy Moth Avenue Hatfield Business Park Hatfield AL10 9UH
Received 12 Oct 2017
Decided - Granted6/2016/1004/EM
Installation of side gate between garage and hedgerow and replacement of existing front block paving
8 Aldock, Welwyn Garden City, AL7 4QF
Received 19 May 2016
Decided - Granted6/2019/0129/PN8
Prior approval for erection of single storey rear extension measuring 4.5m in depth, 4.0m in height, 2.97m to the eaves
7 Bluebridge Road Brookmans Park Hatfield AL9 7UP
Received 22 Jan 2019
Decided - Granted6/2019/0906/HOUSE
Enlargement of existing rear roof dormer, alterations to existing conservatory to form a single storey rear extension including creation of flat roof and installation of roof lantern
5 Peplins Close Brookmans Park Hatfield AL9 7UX
Received 15 Apr 2019
Decided - GrantedW6/2008/1196/EM
ERECTION OF REPLACEMENT REAR CONSERVATORY
36 MOORLANDS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4PP
Received 15 Jul 2008
Decided - GrantedN6/2013/0292/TC
Reduce Eucalyptus tree by upto 75%
163 Parkway, WELWYN GARDEN CITY, AL8 6JA
Received 8 Feb 2013
Decided - Granted6/2023/1412/FULL
Erection of dwelling and installation of front boundary treatment following demolition of the existing dwelling
24 Mymms Drive Brookmans Park Hatfield AL9 7AF
Received 6 Jul 2023
Decided - Granted6/2017/1965/EM
Erection of a single storey rear extension 6m in depth, 3m in height and 3m to the eaves
37 Lodgefield Welwyn Garden City AL7 1SD
Received 1 Sept 2017
Decided - Granted6/2019/2040/FULL
Erection of single storey extension following demolition of existing office and entrance to the north elevation and replacement pitched roof to existing flat roof kitchen and toilet extension
Twelve Apostles Church Kentish Lane Brookmans Park Hatfield AL9 6JY
Received 15 Aug 2019
Decided - Granted6/2016/0584/HOUSE
Conversion of garage into habitable space and extension of porch
3 Gresley Close, Welwyn Garden City, AL8 7QA
Received 4 Apr 2016
Decided - GrantedW6/2015/0632/EM
Removal of 1.8 metre privet hedge and enlargement of vehicle hardstanding
7 The Links, Welwyn Garden City, AL8 7DS
Received 24 Mar 2015
Decided - Granted6/2018/2052/TPO
Fell 1 x Ash tree
4 Hanyards Lane Cuffley Potters Bar EN6 4AS
Received 3 Aug 2018
Decided - GrantedS6/2013/1873/NM
Non material amendment following approval of planning permission S6/2011/0349/FP - To install a roof light window above garage
10 Bradgate, Cuffley, Potters Bar, EN6 4RL
Received 6 Sept 2013
Decided - GrantedN6/2009/1243/TE
FELLING OF ONE BEECH TREE, ONE MAPLE TREE AND ONE WILLOW TREE
LAND ADJACENT TO, 11 BROOMS CLOSE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JA
Received 23 Jun 2009
Decided - Granted6/2022/0360/PN8
Prior approval for the erection of a single storey rear extension measuring 6m in depth, 2.68m. in heights,2.36 m. to the eaves with a flat roof to include insertion of roof light into proposed roof.
124 Salisbury Road Welwyn Garden City AL7 3SA
Received 15 Feb 2022
DecidedN6/2013/2538/TC
Reduce crown of Ash tree by 30%, cut overhanging crown of Beech tree back by upto 3 metres, reduce crown of second Beech tree to below failure point and reduce lateral limbs by 2 metres plus fell one stem and reduce remaining stems of Two Beech trees by 30%
36 Elm Gardens, Welwyn Garden City, AL8 6RY
Received 20 Nov 2013
Decided - Granted6/2023/0348/HOUSE
Erection of a part single part double storey rear extension following the demolition of conservatory with erection of a single storey side extension to replace existing
28 Elmwood Welwyn Garden City AL8 6LE
Received 14 Feb 2023

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

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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.
UK research
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