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

19,527Searchable applications

298Recorded as pending

86%Approval rate · 15,782 approved or refused records

2,200Refused applications

13,582 approved · 2,200 refused · 987 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 12 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/2858/HOUSE
Erection of a single storey rear extension and conversion of existing outbuilding to habitable use
88 Woodhall Lane Welwyn Garden City AL7 3TF
Received 5 Oct 2021
Decided - Granted6/2020/1663/HOUSE
Extension to existing hardstanding
101 Cole Green Lane Welwyn Garden City AL7 3JF
Received 10 Jul 2020
Decided - Granted6/2020/2351/PN8
Prior approval for single storey rear extension
45 Archers Ride Welwyn Garden City AL7 4PR
Received 10 Sept 2020
Decided - Granted6/2023/2110/COND
Submission of details pursuant to Condition 13 (verification report) on planning permission 6/2021/2260/FULL
Stadium Service Station Stanborough Road Welwyn Garden City AL8 6XA
Received 18 Oct 2023
Decided6/2016/0270/VAR
Variation of conditions 1 (occupants) and 2 (number of caravans) of Planning Permission N6/2010/0211/S73B to increase the number of caravans from 10 to 20 of which no more than 5 shall be static caravans or mobile homes.
Four Oaks 1-4 Great North Road Welwyn AL6 0PL
Received 17 Feb 2016
Decided - Granted6/2018/1691/EM
Hornbeam Tree: Reduce crown by 6 feet
29 Coltsfoot Welwyn Garden City AL7 3HZ
Received 25 Jun 2018
Decided - Granted6/2023/2200/VAR
Variation of condition 1 (Noise Mitigation Measures) on planning permission 6/2022/1920/HOUSE)
239 Daniells Welwyn Garden City AL7 1QD
Received 30 Oct 2023
Decided - Granted6/2025/1088/EM
Extending of current hardstanding. Moving boundary line across to newly purchased Garage (garage 73a) Part Hedge removal. Existing garage attached to property to have the garage door replaced by brickwork and a window.
73 Uplands Welwyn Garden City AL8 7EH
Received 9 Jun 2025
Decided - Granted6/2021/0064/HOUSE
Erection of a single storey rear extension
5 Wilkins Green Lane Hatfield AL10 9RT
Received 11 Jan 2021
Decided - Refused6/2020/2903/HOUSE
Erection of a single storey rear extension
5 Swanley Bar Lane Little Heath Potters Bar EN6 1NN
Received 6 Nov 2020
Decided - Granted6/2025/1365/HOUSE
Retention of outbuilding in the rear garden for use as gym/playroom/storage
1 Thrush Avenue Hatfield AL10 8QU
Received 1 Jul 2025
Decided - Granted6/2018/0970/FULL
Formation of new opening with new overhead goods door to the front elevation.
City Park F Swiftfields Welwyn Garden City AL7 1LY
Received 12 Apr 2018
Decided - Granted6/2019/0732/HOUSE
Erection of a single storey side extension
15 Parsonage Lane Welham Green Hatfield AL9 7NB
Received 27 Mar 2019
Under Consideration6/2026/1247/EMT
Field maple to crown lift to 3m and to reduce the tree by 30%
23 Elmwood Welwyn Garden City AL8 6LD
Received 15 Jul 2026
Decided - Granted6/2020/0156/HOUSE
Erection of a single storey front, single storey, part two storey rear extension following demolition of porch
4 Hill Ley Hatfield AL10 8LX
Received 22 Jan 2020
Decided6/2021/3300/TC
Tree A: Leylandii fir tree on right side boundary of property (looking from street) to remove Tree B: Leylandii fir tree to rear of property to be pruned by 30%
5 Palmerston Close Welwyn Garden City AL8 7DL
Received 22 Nov 2021
Decided - Refused6/2022/2531/PN15
Telecommunications installation: Proposed 15.0m Phase 8 Monopole C/W wraparound cabinet at base and associated ancillary works
Cole Green Lane Hall Grove Welwyn Garden City AL7 4PJ
Received 4 Nov 2022
Decided - Granted6/2021/2367/EMT
Reduce 1 x Hornbeam tree (T1) by 30%
19 Sherrardspark Road Welwyn Garden City AL8 7JW
Received 10 Aug 2021
Decided - Granted6/2020/1730/EMT
Reduce crown of 1 x Eucalyptus tree by 3 metres from the height and 4 metres from the width
3 Fordwich Road Welwyn Garden City AL8 6EX
Received 15 Jul 2020
Decided - Granted6/2018/1295/LAWP
Certificate of lawfulness for the removal of chimney breast and stack
31 Howicks Green Welwyn Garden City AL7 4RJ
Received 16 May 2018
Decided - Granted6/2025/0629/EM
Replacement front door and security alarm to front and rear elevation
6 The Quadrangle Welwyn Garden City AL8 6SG
Received 1 Apr 2025
Decided - Granted6/2021/2185/EM
Extension of existing driveway
4 Blakemere Road Welwyn Garden City AL8 7PJ
Received 19 Jul 2021
Decided - Granted6/2020/0536/FULL
Change of use and conversion of existing class (A3) to class (C3) Dwelling
Waterend Cafe 1 Warrengate Road North Mymms Hatfield AL9 7TU
Received 25 Feb 2020
Decided - Granted6/2018/1463/HOUSE
Erection of a rear conservatory
27 School Lane Welwyn AL6 9PQ
Received 31 May 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