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

21,691Searchable applications

297Recorded as pending

86%Approval rate · 17,570 approved or refused records

2,494Refused applications

15,076 approved · 2,494 refused · 1,112 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 13 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2018/1961/HOUSE
Relocation of front door, erection of porch, alterations to elevations and removal of front hedge
11 Lady Grove Welwyn Garden City AL7 4DS
Received 25 Jul 2018
Decided6/2022/1115/TC
Reduce oak tree (T1) and apple tree (T3) canopies by 30% to previous points
2 Lytton Gardens Welwyn Garden City AL8 6EG
Received 16 May 2022
Decided - Granted6/2018/3268/PN15
Prior approval for the installation of a 13m High Phase 5 Monopole Tower on new root foundation and associated works
Welwyn North Car Park Off Station Road Welwyn AL6 0DD
Received 21 Dec 2018
Decided - Refused6/2021/0633/LAWP
Certificate of lawfulness for the erection of single storey rear extension, front porch and ancillary use out building
50 Wilshere Road Welwyn AL6 9PX
Received 26 Feb 2021
Decided6/2021/2012/TC
T1 cherry - remove to ground level and grind out stump.
51 Blakemere Road Welwyn Garden City AL8 7PQ
Received 2 Jul 2021
Decided - Granted6/2024/2379/VAR
Variation of Condition 10 (Drawing numbers) on planning permission 6/2021/0951/FULL
13 New Road Welwyn Garden City AL8 7TX
Received 12 Dec 2024
Decided - Granted6/2025/2042/MAJ
Erection of extension to the stable block to provide workshop and storage space for ground maintenance machinery
Brick Kiln Cottage 7 Homerswood Lane Ayot St Peter Welwyn AL6 9AD
Received 24 Sept 2025
Decided - Granted6/2023/1016/HOUSE
Raise parapet of existing side extension by 150mm using matching brickwork and copings
129 Sweet Briar Welwyn Garden City AL7 3EB
Received 15 May 2023
Decided - Granted6/2017/2820/HOUSE
Conversion of existing garage to home studio
The Old Cottage Green Lanes Hatfield AL10 9BH
Received 4 Dec 2017
Decided - Granted6/2020/3195/FULL
Replacement shop front to the front and side elevations.
1 Maynard Place Cuffley Potters Bar EN6 4JA
Received 30 Nov 2020
Decided - Granted6/2021/1805/FULL
Proposed external alterations and extension to form new fenestration and new second floor within the first-floor space to accommodate 6no. new flats and reconfigure the 6no. units
41-43 Town Centre Hatfield AL10 0JJ
Received 10 Jun 2021
Decided - Granted6/2021/2932/LB
Erection of a detached double garage, and a single storey detached pool house
8 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ
Received 12 Oct 2021
Decided - Refused6/2021/0462/HOUSE
Erection of single storey side extension and two side dormer windows
75 Brookside Crescent Cuffley Potters Bar EN6 4QP
Received 12 Feb 2021
Decided - Granted6/2021/0658/HOUSE
Retention of outbuilding and gazebo structure in the rear garden following the demolition of the existing garage
9 Broad Acres Hatfield AL10 9LE
Received 1 Mar 2021
Decided - Granted6/2018/0030/EM
Erection of a single storey rear extension
13 Elmwood Welwyn Garden City AL8 6LD
Received 4 Jan 2018
Decided - Granted6/2021/0486/TPO
Fell 2 x Poplar trees covered by TPO 720 G1
36 Peregrine Way Hatfield AL10 9UP
Received 15 Feb 2021
Decided - Granted6/2024/0258/COND
Submission of details pursuant of condition 1 (samples) on planning permission 6/2021/1061/HOUSE
24 Church Street Hatfield AL9 5AW
Received 7 Feb 2024
Decided - Granted6/2019/1172/FULL
Erection of a four storey extension incorporating 8 x 1 bedroom residential apartments; alterations to facade of Unit 1, and associated access; demolition of Unit 1a and formation of access and parking areas, and ancillary development
Units 1, 1a and 3 Swallow End Welwyn Garden City AL7 1JA
Received 15 May 2019
Decided - Granted6/2024/2093/EM
Replace the existing garage door, which opens over the top, with side hinged garage doors. The doors will also have horizontal windows, as per the image, which is in keeping with other properties in Blakemere Road and the West side of Welwyn Garden City
59 Blakemere Road Welwyn Garden City AL8 7PQ
Received 30 Oct 2024
Decided - Granted6/2026/0019/COND
Submission of details pursuant to Condition 2 (Construction Management Plan) on planning permission 6/2025/0843/HOUSE
32 Wilga Road Welwyn AL6 9PS
Received 6 Jan 2026
Decided - Granted6/2022/2726/LAWE
Certificate of lawfulness for the existing storage or distribution Class B8
Colesdale Farm Northaw Road West Northaw Potters Bar Hertfordshire EN6 4QZ
Received 1 Dec 2022
Decided - Granted6/2025/2397/COND
Submission of details pursuant of condition 1 (verification report) on planning permission 6/2024/1205/FULL
18 Station Road Cuffley Potters Bar EN6 4HT
Received 14 Nov 2025
Decided - Granted6/2024/1821/TPO
TPO 1074 - Acer Pseudoplatanus Brilliantissimum (described as "Brilliant Maple T1 on your TPO and on our plan) Raise the crown of the tree by removing some of the smaller lower branches, maintaining the shape of the tree. The reason for the work is to raise it above head level where it overhangs the path, and also to prevent it encroaching on the house. At present the lowest point of the tree is approx 1.6m from the ground, we wish to raise it to approx 2.4m from ground level
28 Endymion Road Hatfield AL10 8AS
Received 23 Sept 2024
Decided - Granted6/2023/1669/EM
Removal of existing log cabin from rear garden
44 Elmwood Welwyn Garden City AL8 6LE
Received 10 Aug 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