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

27,697Searchable applications

307Recorded as pending

87%Approval rate · 22,846 approved or refused records

3,084Refused applications

19,762 approved · 3,084 refused · 1,488 withdrawn. Received dates in our records: 5 Jan 2005 to 13 Oct 2026. Most recent record check: 17 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2023/0587/HOUSE
Erection of a single storey rear extension
152 Brookside Crescent Cuffley Potters Bar EN6 4QL
Received 15 Mar 2023
Decided - Granted6/2026/1242/EM
Enlargement & Replacement of existing driveway & paths
49 Bridge Road Welwyn Garden City AL8 6UH
Received 15 Jul 2026
Decided - Granted6/2021/2956/EMT
1 x Plum to fell to ground level. Growing on a bank with roots becoming exposed and largely leaning over neighbouring property. 1 x Leyland Cypress to reduce by 1m height. 1 x Magnolia to reduce by approximately 1.5m.
33 Attimore Road, Welwyn Garden City, AL8 6LQ
Received 14 Oct 2021
Decided - Granted6/2017/2811/HOUSE
Erection of two-storey side extension and single-storey extension with flat roof on east elevation to facilitate workshop following the demolition of existing shed and garage
2 Sandpit Road Welwyn Garden City AL7 3TN
Received 30 Nov 2017
Decided - Granted6/2023/0575/EM
Replacement of existing hardstanding with paving or shingle over grassed and shingled area at front of property
62 Little Thistle, Welwyn Garden City, AL7 4AE
Received 14 Mar 2023
Decided - Granted6/2024/0938/HOUSE
Erection of single storey rear extension
59 Pooleys Lane Welham Green Hatfield AL9 7LG
Received 20 May 2024
Decided - Granted6/2021/2623/HOUSE
Conversion of garage to habitable use and alterations to fenestrations
22 Chelveston Welwyn Garden City AL7 2PW
Received 9 Sept 2021
Decided - Granted6/2019/3188/PN8
Prior approval for the erection of a single storey rear extension measuring 3.71m in depth, 3.90m in heights and 2m to the eaves
130 Holwell Road Welwyn Garden City AL7 3RW
Received 16 Dec 2019
Decided - Refused6/2022/2502/FULL
Erection of two-storey side extension, part first floor and part single storey rear extension and alterations to external site works, to provide additional surgical capacity at the practice.
178 Handside Lane Welwyn Garden City AL8 6SZ
Received 1 Nov 2022
Decided - Granted6/2024/0111/HOUSE
Erection of single storey rear extension
15 Kingsley Court Welwyn Garden City AL7 4HZ
Received 16 Jan 2024
Decided - Granted6/2017/2752/HOUSE
Conversion of garage to dining room
13 Drakes Way Hatfield AL10 8XR
Received 23 Nov 2017
Decided - Granted6/2025/2480/TPO
T1 Oak, crown reduce back to previous reduction points only, removing approx. 3-4m of regrowth TPO 643 (2017) T9
19 Marlborough Close Welwyn AL6 0UG
Received 26 Nov 2025
Decided - Granted6/2026/0321/COND
Submission of details pursuant to Conditions 1 (Construction Management Plan), 2 (Surface Water Drainage), 7 (Planting Methods and Soft Landscaping) and Condition 8 (Cycle Shelter and Cycle Provision) on planning permission 6/2022/1853/MAJ
European Knowledge Centre Eisai Limited Mosquito Way Hatfield AL10 9SN
Received 20 Feb 2026
Decided - Granted6/2024/1576/EM
Add 4ft tall Beech hedging to property boundary
2 Fern Grove Welwyn Garden City AL8 7ND
Received 19 Aug 2024
Decided - Granted6/2025/0502/EM
Addition of Velux window to north facing roof at back of house
43 Handside Lane Welwyn Garden City AL8 6SH
Received 18 Mar 2025
Decided - Refused6/2016/0329/EM
Erection of single storey rear extension
16 Attimore Close, Welwyn Garden City, AL8 6LN
Received 26 Feb 2016
Decided - Withdrawn6/2018/0466/TPO
Fell 1 x Oak tree - Conservation Area
40 Digswell Road Welwyn Garden City AL8 7PA
Received 14 Feb 2018
Decided - Granted6/2016/0614/EM
Fell Lawson Cypress tree and raise Sycamore crown by 10-12ft
87 Attimore Road, Welwyn Garden City, AL8 6LG
Received 24 Mar 2016
Decided - Granted6/2020/0149/EM
Erection of a single storey rear extension and detached annex, ancillary to the main building, following the demolition of existing detached garage and shed.
143 Hollybush Lane Welwyn Garden City AL7 4JT
Received 20 Jan 2020
Decided - Granted6/2021/3304/MAJ
Erection of 34 dwellings to include landscaping, engineering and associated works
Osborne House Farm Hawkshead Road Little Heath Potters Bar EN6 1LX
Received 23 Nov 2021
Decided - Refused6/2023/2048/LAWP
Certificate of lawfulness for the conversion of garage to habitable use
91 Campion Road Hatfield AL10 9FL
Received 5 Oct 2023
Decided - GrantedS6/2014/0352/FP
Erection of two storey and single storey front extensions, single storey side extension and garage conversion
78 The Ryde, Hatfield, AL9 5DL
Received 14 Feb 2014
Decided - Granted6/2017/0671/EM
1 x Eucalyptus to fell to ground level 1 x Norway maple sapling to fell to ground level
45 Elmwood Welwyn Garden City AL8 6LD
Received 4 Apr 2017
Decided - Withdrawn6/2018/0521/PN8
Prior approval for the erection of a single storey rear extension measuring 4m in depth, 2.72m in height and 0m to the eaves
240 Daniells Welwyn Garden City AL7 1QQ
Received 20 Feb 2018

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