England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates

24,651Searchable applications

313Recorded as pending

86%Approval rate · 20,210 approved or refused records

2,791Refused applications

17,419 approved · 2,791 refused · 1,297 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 Oct 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/0486/HOUSE
Erection of part single and part two storey rear extension, following demolition of conservatory with alterations to side and rear openings
159 Handside Lane Welwyn Garden City AL8 6TA
Received 16 Mar 2026
Decided - Granted6/2019/3203/HOUSE
Erection of front porch, single storey rear and side extension and conversion of garage to habitable floor space, removal of chimney
9 The Gardens Brookmans Park Hatfield AL9 7UL
Received 20 Dec 2019
Decided - Granted6/2023/1328/HOUSE
Erection of a single storey rear extension, single storey front infill extension and garage conversion, to include replacement of garage door with window and raising of garage roof and insertion of rooflights.
52 Beehive Lane Welwyn Garden City AL7 4BP
Received 27 Jun 2023
Decided - Granted6/2016/1111/HOUSE
Conversion of Garage
12 Sherrardspark Road, Welwyn Garden City, AL8 7JP
Received 6 Jun 2016
Decided - Granted6/2021/0893/FULL
Retention of a temporary single storey container for use as a COVID-19 testing facility.
Buildings 1 & 2 Trident Place Hatfield Business Park Hatfield Mosquito Way AL10 9UL
Received 19 Mar 2021
Decided - Granted6/2016/2292/TPO
Reduce Oak tree crown by 3m and reduce lateral branches by 2m
51 Brockswood Lane Welwyn Garden City AL8 7BU
Received 2 Nov 2016
Decided - Granted6/2016/1672/EM
Replacement of existing conservatory
28 Turmore Dale, Welwyn Garden City, AL8 6HS
Received 15 Aug 2016
Decided - Granted6/2019/2054/PN15
Prior approval for upgrade of telecommunications to include erection of 20 metre high monopole and associated works
Hatfield Tunnel Verge A1001 South Hatfield AL10 9RH
Received 16 Aug 2019
Decided - Granted6/2019/1397/COND
Submission of details pursuant to condition 1 (construction method statement) and 3 (external lighting) on planning permission 6/2018/2472/MAJ
Accord House 28 Bridge Road East Welwyn Garden City AL7 1HX
Received 11 Jun 2019
Decided - Refused6/2024/0528/LAWE
Certificate of lawfulness for the existing HMO (Use Class C3)
10 Shallcross Crescent Hatfield AL10 9QH
Received 18 Mar 2024
Decided - Granted6/2017/2470/HOUSE
Erection of a rear conservatory
3 Wellington Drive Welwyn Garden City AL7 2NL
Received 25 Oct 2017
Decided - Granted6/2016/1878/EM
Removal of Oak tree
10 Attimore Close, Welwyn Garden City, AL8 6LN
Received 13 Sept 2016
Decided - Granted6/2019/0346/TPO
Reduce limb of 1 x Tree of Heaven tree (T1) and reduce remaining crown by 30% - covered by TPO 701 (2017)
Hertfordshire Constabulary Central Area Headquarters And Hatfield Police Station Comet Way Hatfield AL10 9SJ
Received 14 Feb 2019
Decided - Granted6/2022/1677/HOUSE
Erection of a two storey side extension
121 Salisbury Road Welwyn Garden City AL7 3RZ
Received 15 Jul 2022
Decided - Granted6/2021/3443/EM
Replacement of existing roof tiles with ‘Mosborough Red Double Roman’ roof tiles
10 Attimore Close Welwyn Garden City AL8 6LN
Received 8 Dec 2021
Decided - Granted6/2023/0398/EM
Installation of solar PV panels to roof
97 The Commons Welwyn Garden City AL7 4RZ
Received 20 Feb 2023
Decided - Withdrawn6/2022/0589/TPO
Erection of elevated play house adjacent to Oak Tree (TPO450T176 Oak), elevated timber deck will surround the tree trunk.
15 Reeves Court Welwyn AL6 9FU
Received 14 Mar 2022
Under Consideration6/2026/1240/LAWP
Certificate of lawfulness for driveway and dropped kerb
45 Briars Wood Hatfield AL10 8DH
Received 15 Jul 2026
Decided - Withdrawn6/2019/0884/LAWP
Certificate of lawfulness for the erection of an annex following demolition of existing garage
7 Briars Lane Hatfield AL10 8EP
Received 11 Apr 2019
Decided6/2019/1514/TC
Reduce 1 x Beech tree by 4m
8 Digswell Road Welwyn Garden City AL8 7PA
Received 18 Jun 2019
Decided - Refused6/2024/0408/FULL
Change of use from residential dwelling (C3) to a children home (C2)
11 Gould Close Welham Green Hatfield AL9 7EB
Received 4 Mar 2024
Decided - Granted6/2016/0747/TPO
Removal of dying and dangerous Rowan tree from the rear of the garden - Conservation Area - Dead & Dangerous application
10 Pentley Close, Welwyn Garden City, AL8 7SH
Received 20 Apr 2016
Decided - Granted6/2020/0986/EM
Erection of a single storey side extension, a two storey, part first floor side extension and front porch infill extension. Works to also include alterations to fenestration.
2 Old Forge Close Welwyn AL6 0SR
Received 30 Apr 2020
Decided - Granted6/2023/1844/HOUSE
Erection of a two storey side extension and part two, part single storey rear extension
37 Honeysuckle Gardens Hatfield AL10 8PL
Received 4 Sept 2023

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

View all applications

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.
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