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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2021/3015/HOUSE
Erection of a part two storey, part single storey side/rear extension involving demolition of existing rear conservatory
3 Timbercroft Welwyn Garden City AL7 1NS
Received 20 Oct 2021
Decided - Granted6/2022/2586/HOUSE
Erection of a single storey rear and front extension, increase in roof pitch, installation of two forward facing and one rear facing dormer, alterations to fenestration following demolition to existing rear and side extensions
61 The Ridgeway Cuffley Potters Bar Hertfordshire EN6 4BD
Received 14 Nov 2022
Decided - GrantedS6/2004/1224/AD
INSTALLATION OF 3 NON-ILLUMINATED FASCIA SIGNS AND 1 NON-ILLUMINATED ENTRANCE SIGN .
FORMER MITSUBISHI ELECTRIC (UK) LTD, THE WAREHOUSE, TRAVELLERS LANE, HATFIELD, HERTFORDSHIRE, AL108XQ
Received 6 Aug 2004
Decided - Withdrawn6/2021/0940/TC
Fell 1 x Fir tree covered by conservation area
31 Colgrove Welwyn Garden City AL8 6HY
Received 23 Mar 2021
Decided - Granted6/2025/1653/EMT
1 x Cherry to remove lower branches over neighbouring pagoda to provide a clearance of 2.5m. lift the remaining section of the tree to proved a balanced shape. Lifting to allow more light and space for the hedge and the cabin
76 Parkway Welwyn Garden City AL8 6HH
Received 31 Jul 2025
Appeal Decided - AllowedN6/2014/1844/FP
Erection of ground floor rear extension and widening of existing crossover
22 Brockswood Lane, Welwyn Garden City, AL8 7BG
Received 19 Aug 2014
Decided - Granted6/2020/3436/FULL
Retention of existing mezzanine
Unit 4 Mallow Park Watchmead Welwyn Garden City AL7 1GX
Received 23 Dec 2020
Decided - Granted6/2026/0087/LB
Installation of 135 metres of fibre telecommunications cable from a fibre termination box in the ground floor canteen area, to a communications cabinet located in the ground floor communications room
Hatfield Police Station Comet Way Hatfield AL10 9SJ
Received 20 Jan 2026
Decided - GrantedW6/2014/0236/TE
Removal of Silver Birch tree
31 Great Dell, Welwyn Garden City, AL8 7HP
Received 11 Feb 2014
Decided - Granted6/2022/0903/EM
Erection of rear ground floor and first floor extension
33 Holwell Road, Welwyn Garden City, AL7 3RE
Received 14 Apr 2022
Decided - Granted6/2017/1280/TPO
T1 Ash tree to fell, T2 Ash tree to reduce by 1.5m on height and width, T3 Plum tree to fell and T4 Ash tree to fell - Conservation Area
120 Handside Lane Welwyn Garden City AL8 6SZ
Received 13 Jun 2017
Decided - Granted6/2017/1700/COND
Submission of details pursuant to condition 5 (front door details) on planning permission 6/2016/0473/EM, dated 19/07/2016
16 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 2 Aug 2017
Decided - GrantedW6/2004/0681/EM
CHANGE OF USE OF AMENITY LAND TO RESIDENTIAL USE
259 Handside Lane, Welwyn Garden City, AL8 6TF
Received 6 May 2004
Decided - Granted6/2018/1069/HOUSE
Erection of a single storey rear extension following demolition of existing conservatory. Erection of canopy following demolition of existing canopy and installation of rear patio
15 Eastor Welwyn Garden City AL7 1PN
Received 25 Apr 2018
Decided - GrantedN6/2005/1283/FP
EXTENSION TO SCHOOL PLAYGROUND.
St Michaels Primary School 12 London Road Woolmer Green Knebworth SG3 6JP
Received 11 Oct 2005
Decided - Granted6/2017/0600/HOUSE
Roof enlargement, 1no front dormer and 1no rear dormer
103 High Dells Hatfield AL10 9HT
Received 24 Mar 2017
Decided - Granted6/2025/1899/HOUSE
Erection of an outbuilding in the rear garden for use as gym, storage, shed
27 Furzen Crescent Hatfield AL10 9QN
Received 4 Sept 2025
Decided - GrantedW6/2014/0735/EM
Erection of two storey rear extension
30 Lodgefield, Welwyn Garden City, AL7 1SD
Received 8 Apr 2014
Decided - Granted6/2023/2318/EM
Erection of a single storey rear extension and installation of two rooflights
42 Moorlands Welwyn Garden City AL7 4PP
Received 17 Nov 2023
Decided - GrantedW6/2005/1596/EM
FORMATION OF VEHICLE HARDSTANDING
6 Stanborough Green, Welwyn Garden City, AL8 6XG
Received 23 Dec 2005
Decided - Granted6/2024/0522/LAWP
Certificate of lawfulness for the erection of three single-storey rear extensions, two single-storey side extensions, a single-storey basement underneath the original dwellinghouse and a single-storey outbuilding
Little Bedwell Cucumber Lane Essendon Hatfield AL9 6JA
Received 18 Mar 2024
Decided - Granted6/2024/0384/EMT
T1 Oak - remove epicormic growth to maintain current pruning practice allowing driveway and garage area to remain clear T2 1x Oak - reduce by approx 2m height and width and remove lower branches up to the crown break to maintain tree to fromer size, approx 6 years ago, removing lower limbs to allow more light to extension area, while also lessening the debris fall on the roof T3 1x Oak - reduce by 2m in height and width, remove epicormic growth up to crown break to create a more compact canopy and to bring the tree in line with others whilst also allowing more light into the lower shrub bed and garden area T4 1x Oak - reduce by approximately 2m in height and width and remove epicormic growth up to crown break to maintain tree to fromer size, approx 6 years ago, whilst allowing more light into rear part of the property
7 Densley Close Welwyn Garden City AL8 7JX
Received 27 Feb 2024
Decided - Granted6/2021/1151/EMT
Removal of privet hedge and replace with yew
40 Applecroft Road Welwyn Garden City AL8 6LA
Received 8 Apr 2021
Decided - Granted6/2021/2845/EM
Remove wooden cabinets and window above existing door and replace with walls. Installation of new FD30 doors
45 Homestead Court Welwyn Garden City AL7 4LZ
Received 4 Oct 2021

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.
UK research
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