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

29,936Searchable applications

307Recorded as pending

87%Approval rate · 24,879 approved or refused records

3,302Refused applications

21,577 approved · 3,302 refused · 1,588 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 18 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/1537/EM
To reduce 2x Ash trees by 30% back to previous cutting points and lift crown to 5 or 6 m above ground
12 The Old Drive Welwyn Garden City AL8 6TB
Received 11 Jul 2017
Decided - Granted6/2023/0471/LAWP
Certificate of lawfulness for installation of rear dormer
11A Station Road Welham Green Hatfield AL9 7PN
Received 1 Mar 2023
Decided - Granted6/2021/1310/LAWP
Certificate of lawfulness for the erection of a mobile home for use ancillary to the main dwelling
1 Kingsmead Cuffley Potters Bar EN6 4AN
Received 23 Apr 2021
Decided - Granted6/2024/0510/HOUSE
Erection of part single, part two story rear extension and front porch extension following the demolition of existing outbuilding
28 Wilga Road Welwyn AL6 9PS
Received 18 Mar 2024
Decided - Granted6/2018/2267/COND
Submission of details pursuant to condition 1 (crown roof) on planning reference 6/2018/0569/HOUSE
51 Moffats Lane Brookmans Park Hatfield AL9 7RT
Received 4 Sept 2018
Decided - Granted6/2018/2517/HOUSE
Erection of single storey rear extension
122 Campion Road Hatfield AL10 9FT
Received 26 Sept 2018
Decided - Refused6/2018/0324/ADV
Installation of 2 x non-illuminated A-board signs - retrospective
Land at the entrance to Brownfields Welwyn Garden City AL7 1AJ
Received 31 Jan 2018
Decided - Refused6/2024/1413/HOUSE
Erection of two storey side and rear extension
1 Cedar Road Hatfield AL10 8NZ
Received 24 Jul 2024
Decided - Granted6/2016/2234/HOUSE
Erection of single storey rear extension and garage side extension including demolition of rear garage outbuilding
56 Oaklands Avenue Brookmans Park Hatfield AL9 7UJ
Received 25 Oct 2016
Decided - Granted6/2016/0076/EM
Removal of Cherry tree located in rear garden
3 Roundwood Drive, Welwyn Garden City, AL8 7JZ
Received 19 Jan 2016
Decided - Granted6/2019/1217/HOUSE
Installation of roof terrace and boundary fence
14A Huggins Lane Welham Green Hatfield AL9 7LR
Received 20 May 2019
Decided - Refused6/2016/0420/EM
Formation of vehicular hardstanding
11 Valley Road, Welwyn Garden City, AL8 7DG
Received 9 Mar 2016
Decided - Granted6/2024/2402/COND
Submission of details pursuant to condition 3 (Site Investigation) on planning permission 6/2022/2759/FULL
Plot 5610 Gypsy Moth Avenue Hatfield Business Park Hatfield AL10 9BS
Received 19 Dec 2024
Decided - Granted6/2018/2649/FULL
Erection of a five bedroom detached dwelling with detached double garage
6 Briary Wood End (Land at) WELWYN AL6 0TD
Received 16 Oct 2018
Decided - GrantedN6/2014/1409/FP
Installation of ATM to existing retail unit
14 High Street Welwyn AL6 9EQ
Received 23 Jun 2014
Decided - Granted6/2024/0270/PN8
Prior approval for the erection of a single-storey rear extension measuring 6.00m in depth, 3.87m in height and 2.59m to the eaves.
24 Selwyn Avenue Hatfield AL10 9NP
Received 8 Feb 2024
Decided - Granted6/2023/2393/EMT
Reduce 1 x Ash by 30%
32 Barleycroft Road Welwyn Garden City AL8 6JU
Received 28 Nov 2023
Decided - Granted6/2017/1297/EM
Erection of two storey side and rear extension
8 Vine Close Welwyn Garden City AL8 7PS
Received 14 Jun 2017
Decided - GrantedW6/2014/0638/EM
Erection of rear conservatory
30 Beehive Green, Welwyn Garden City, AL7 4BG
Received 28 Mar 2014
Decided - Granted6/2018/0090/HOUSE
Erection of a single storey rear extension
170 Parkway Welwyn Garden City AL8 6HZ
Received 11 Jan 2018
Decided - Granted6/2020/0004/HOUSE
Erection of an outbuilding and installation of outdoor swimming pool
Hilltop Cucumber Lane Essendon Hatfield AL9 6JA
Received 6 Jan 2020
Decided - GrantedN6/2013/2702/FP
Erection of bay window extension to rear elevation with balcony above
14 Codicote Road Welwyn AL6 9NQ
Received 16 Dec 2013
Decided6/2025/0888/TC
Reduce 1 x Yew by approximately 2-2.5m in height, reduce subsided limbs back to align with natural shape. Cut back width over the footpath by approximately 0.5m.
9 Brockswood Lane Welwyn Garden City AL8 7BA
Received 14 May 2025
Decided - GrantedS6/2014/0287/HH
Prior approval for the erection of single storey rear extension
12 Link Walk, Hatfield, AL10 8TS
Received 12 Feb 2014

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