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

24,135Searchable applications

313Recorded as pending

86%Approval rate · 19,754 approved or refused records

2,745Refused applications

17,009 approved · 2,745 refused · 1,260 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2019/0876/EM
Erection of dwelling with garage
28 High Oaks Road Welwyn Garden City AL8 7BH
Received 11 Apr 2019
Decided - Granted6/2023/1693/HOUSE
Conversion of loft with 2 x rear facing dormers and insertion of rooflight, new roof with insertion of roof lights to existing single storey rear extension and alterations to openings
19 Longcroft Lane Welwyn Garden City AL8 6EB
Received 14 Aug 2023
Decided - Granted6/2020/0794/EMT
Fell 2 x Conifer Trees [T1 + T2] Reduce 1 x Holly Hedge (H1) by 30%
39 Reddings Welwyn Garden City AL8 7LA
Received 27 Mar 2020
Decided - Withdrawn6/2026/1058/FULL
Replacement 5 bedroom dwelling following the demolition of existing 2 bedroom dwelling, with the current dropped kerb to be retained for access to the driveway
108 Tolmers Road Cuffley Potters Bar EN6 4JR
Received 17 Jun 2026
Decided - Granted6/2019/1600/HOUSE
Erection of single storey side and rear extension and replacement front porch
41 Bradmore Way Brookmans Park Hatfield AL9 7QY
Received 1 Jul 2019
Decided - Granted6/2022/0967/HOUSE
Infill of existing front balcony and canopy over front door
14 Falcon Close Hatfield Hertfordshire AL10 8QY
Received 25 Apr 2022
Decided - Granted6/2019/2561/COND
Submission of details pursuant to condition 7 (surface water drainage scheme) on planning permission 6/2018/2577/VAR
94 Harmer Green Lane Digswell Welwyn AL6 0EP
Received 11 Oct 2019
Decided - Granted6/2017/2662/EM
Erection of single storey rear extension and side extension following demolition of existing garage, installation of 4 x skylight windows, new garage doors to the front and new doors to the rear.
3 Pentley Close Welwyn Garden City AL8 7SH
Received 15 Nov 2017
Decided - Granted6/2019/0089/EM
Erection of garden room
49 Crossway Welwyn Garden City AL8 7ED
Received 18 Jan 2019
Decided - Granted6/2019/2952/HOUSE
Replacement of existing timber fence with new timber fence and gates
Just House Coopers Lane Northaw Potters Bar EN6 4NJ
Received 25 Nov 2019
Decided - Granted6/2019/0199/LB
Erection of a porch extension on the northern elevation and internal alterations
The Manor House Hill Farm Lane Welwyn AL6 9BP
Received 30 Jan 2019
Decided - Granted6/2025/2619/EM
Erection of single storey rear extension
14 Elmwood Welwyn Garden City AL8 6LE
Received 23 Dec 2025
Decided - Granted6/2022/1912/TPO
1 x Oak T3 to fell - Crown in decline. Showing signs of Acute Oak Decline. D shaped exit holes symptomatic of the beetle AGRILUS BIGUTTATUS. Tree covered by TPO 700 (2017)
1 Copse Hill Welwyn AL6 0SG
Received 16 Aug 2022
Decided - Granted6/2018/0771/EM
Retention of a summerhouse and shed
21 Ingles Welwyn Garden City AL8 7HE
Received 21 Mar 2018
Decided - Granted6/2021/1220/EM
Erection of single storey rear and side extension
6 Pentley Close Welwyn Garden City AL8 7SH
Received 14 Apr 2021
Decided - Granted6/2021/2251/EMT
T3 1x Cherry to fell, T4 1 x Cherry to reduce by 1.5 height and 2m in width and T5 1x Beech to reduce by 4m height and lift to around 4m above ground level
11 Digswell Park Road Welwyn Garden City AL8 7NW
Received 27 Jul 2021
Decided - Granted6/2019/0633/HOUSE
Erection of single storey rear extension
15 Great North Road Brookmans Park Hatfield AL9 6LB
Received 18 Mar 2019
Decided - Split6/2017/0178/COND
Submission of details reserved by conditions 2a (Finished Levels) 2b (Boundary Treatments) 2d (Planting Plans) 2e (Management & Maintenance Details, 5 (Privacy Screens) and 8 (Refuse & Recycling) on planning permission N6/2013/2727/DE
The Frythe, 5 Digswell Hill, WELWYN, AL6 9AR
Received 24 Jan 2017
Decided - Granted6/2017/1519/PN11
Prior Approval for Change of use from office to residential for the creation of 54 dwellings.
Inspira House Martinfield Welwyn Garden City AL7 1GW
Received 12 Jul 2017
Decided - Granted6/2017/0690/HOUSE
Demolition and rebuild of the existing single storey bedroom area (marked pink on the enclosed drawings)
Doubledoors 3 Pottersheath Road Welwyn AL6 9SY
Received 31 Mar 2017
Decided - Withdrawn6/2022/2466/COND
Submission of details pursuant to condition 1 (construction management plan), 2 (fire hydrants), and 4 (cycle parking) on planning permission 6/2022/0709/MAJ.
17 Tewin Road Welwyn Garden City AL7 1BD
Received 26 Oct 2022
Decided - Granted6/2019/2682/EM
Fell 1 x Silver Birch Fell 1 x Weeping Ash
8 Densley Close Welwyn Garden City AL8 7JX
Received 24 Oct 2019
Decided - Granted6/2016/1349/COND
Approval of details reserved by condition 3 (tree works) on planning permission 6/2015/2492/HOUSE
Lower Meadow, Hill Farm Lane, Welwyn, AL6 9BW
Received 4 Jul 2016
Decided6/2024/1419/TC
Reduce 1 x Oak by 30%
176 Handside Lane Welwyn Garden City AL8 6SZ
Received 26 Jul 2024

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