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

21,670Searchable applications

297Recorded as pending

86%Approval rate · 17,553 approved or refused records

2,493Refused applications

15,060 approved · 2,493 refused · 1,108 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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

Appeal Decided - Allowed6/2020/1783/HOUSE
Erection of a single storey front, rear and side extension, construction of a new twin roof system with increase in the ridge height, installation of rooflights and alterations to openings following demolition of three front bay windows and existing single storey side extension
3 Broom Hill Welwyn AL6 0SF
Received 21 Jul 2020
Decided - Granted6/2017/0788/HOUSE
Erection of first floor side and rear extension, enlargement of front porch and roof alterations.
43 King James Avenue, Cuffley, Potters Bar, EN6 4LN
Received 19 Apr 2017
Decided - Granted6/2020/1708/HOUSE
Erection of part single, part two storey side and rear extension, erection of front porch, conversion of existing and proposed roof spaces to facilitate a rear dormer and roof light. Re-tiling of roof and demolition of existing garage and workshop.
93 Bramble Road Hatfield AL10 9SB
Received 14 Jul 2020
Decided - Granted6/2019/1528/EM
1 x Leylandi hedge to reduce by 50%
5 The Lawns Welwyn Garden City AL8 7HU
Received 24 Jun 2019
Decided - Granted6/2020/1810/LB
External and internal alterations including upgrading thermal insulation to roof and walls, new windows and rooflights
Ayot Farm Bibbs Hall Lane Welwyn AL6 9BY
Received 23 Jul 2020
Decided - Granted6/2024/2349/EMT
T1-Silver Birch- 20% crown reduction as it has outgrown its position, its overgrowing 3 neighbouring gardens. T2-Cherry- Fell as its outgrown its position, its too close to the house.
2 Robin Mead Welwyn Garden City AL7 1PP
Received 6 Dec 2024
Appeal Decided - Allowed6/2020/1768/HOUSE
Increase ridge height to provide full first floor. Two storey side and rear extensions, with front porch canopy.
57 The Ridgeway, Cuffley, Potters Bar, EN6 4BD
Received 20 Jul 2020
Under Consideration6/2026/1450/EM
Refurbishment and upgrade of existing rendered, gable wall, with the application of a ‘breathable’ top silicone coat for durability and longevity
168 Blythway Welwyn Garden City AL7 1DU
Received 18 Aug 2026
Decided6/2020/1646/TC
Reduce 1 x Ash Tree by 30%
79 Newfields Welwyn Garden City AL8 6YS
Received 30 Jun 2020
Decided - Granted6/2019/0418/EM
Fell 5 x Malus trees, 1 x Prunus tree, 2 x Elder trees and 1 x Maple tree
8 Vine Close Welwyn Garden City AL8 7PS
Received 25 Feb 2019
Decided - Granted6/2022/2782/HOUSE
Erection of front porch, and part two, part single storey side and rear extension incorporating conversion of existing garage space and elongation of existing rear dormer window. Elongation of front dormer window and external alterations. Change of external materials and landscape works
1A Marlborough Close Welwyn AL6 0UG
Received 7 Dec 2022
Decided - Granted6/2025/2239/HOUSE
Erection of a single storey rear infill extension and part conversion of the garage to habitable use. Installation of a ground floor side elevation window and rooflights to the existing single storey side and front projection and alterations to fenestration.
343 Knightsfield Welwyn Garden City AL8 7NB
Received 22 Oct 2025
Decided6/2026/0773/TC
TG1 Sycamore, Prunus and Hazel - Coppice/pollard the Sycamore and Hazel to the height of the Laurel hedge and bring the height of the dead/Ivy-clad parts of the Prunus down to match on the waterside. Prune the remaining parts of the Prunus leaning back into the garden of 44 to shape and balance the crown. T1 Ash - Remove the lowest limb going over the water at the back into the phone wires. To do so, we will also need to remove the 2 lowest limbs at the front to set up a lowering line.
44 Mill Lane Welwyn AL6 9ET
Received 1 May 2026
Decided - Granted6/2019/1044/HOUSE
Erection of a single storey side/rear extension and detached storage cupboard, following demolition of existing garden shed
10 Broadfield Place Welwyn Garden City AL8 6LJ
Received 30 Apr 2019
Decided - Granted6/2023/2044/EM
Erection of a single storey rear extension following the part demolition of existing garden shed
92 Mill Green Road Welwyn Garden City AL7 3XE
Received 4 Oct 2023
Decided - Withdrawn6/2021/1551/COND
Submission of details pursuant to condition 1 (external decorations), 2 (landscape works), 3 (landscape), 4, (noise report), 5 (parking), 6 (bin storage) and 7 (drawings) on planning permission 6/2019/0814/FULL
55 Bishops Rise Hatfield AL10 9BX
Received 14 May 2021
Decided - Granted6/2024/0429/EM
Installation of solar panels
40 Wren Wood Welwyn Garden City AL7 1QG
Received 5 Mar 2024
Decided - Granted6/2018/0684/HOUSE
Erection of chimney to the side of the property
12 Mandeville Rise Welwyn Garden City AL8 7JU
Received 13 Mar 2018
Decided - Granted6/2024/1183/MAJ
Erection of 3 storey 9 x apartment following demolition of existing dwelling, alterations to access, provision of parking and bin/cycle stores
55 New Road Digswell Welwyn Hertfordshire AL6 0AL
Received 25 Jun 2024
Decided - Granted6/2020/2415/EMH
Erection of single storey rear extension, partial conversion of garage, internal alterations on ground and first floor, conversion of existing loft space including 4x velux roof lights at rear
37 Sherrardspark Road Welwyn Garden City AL8 7JY
Received 21 Sept 2020
Decided - Granted6/2020/0444/FULL
Change of use of lower level, ground floor level and part of first floor level to gymnasium and fitness studio (Use Class D2); retention of office (Use Class B1) on part of first floor level; installation of 6no condenser units; external staircase; timber cladding and additional glazing to front (west) elevation and alterations to openings
Cedar House Sopers Road Cuffley Potters Bar EN6 4RY
Received 17 Feb 2020
Decided - Granted6/2021/2090/EM
Erection of single storey rear extension and part garage conversion
6 Burrowfield Welwyn Garden City AL7 4SL
Received 9 Jul 2021
Decided - Granted6/2020/2728/EM
Erection of garden room.
2 Archers Ride Welwyn Garden City AL7 4PS
Received 19 Oct 2020
Decided - Granted6/2019/3064/EM
Erection of outbuilding
9 Ashley Close Welwyn Garden City AL8 7LH
Received 3 Dec 2019

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