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

22,888Searchable applications

313Recorded as pending

86%Approval rate · 18,635 approved or refused records

2,626Refused applications

16,009 approved · 2,626 refused · 1,180 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/0103/HOUSE
Erection of single storey rear extension. Insertion of ground floor side window and rear landscape works
44 Birchall Wood Welwyn Garden City AL7 2HL
Received 17 Jan 2022
Decided - Split6/2024/1686/COND
Submission of details pursuant of condition 1 (External Materials, condition 2 (Crown Roof), condition 3 (Boundary Treatment) and condition 4 (Integrated Bat & Bird Boxes) on planning permission 6/2024/0578/HOUSE
38 The Grove Brookmans Park Hertfordshire AL9 7RN
Received 3 Sept 2024
Decided - Granted6/2022/2750/COND
Submission of details pursuant to conditions 9 (a detailed surface water drainage scheme), 13 (confirmation of external lighting designs) on planning permission 6/2019/1618/FULL
Land and Garages at The Commons Welwyn Garden City AL7 4RP
Received 5 Dec 2022
Decided - Granted6/2017/0208/HOUSE
Erection of single storey rear extension
16 Homestead Road Hatfield AL10 0QL
Received 3 Feb 2017
Decided - Granted6/2023/2339/FULL
Erection of a dwelling
6 Stanborough Cottages Great North Road Welwyn Garden City AL8 7TE
Received 21 Nov 2023
Decided - Granted6/2021/1319/EM
Single storey front extension, new porch and alterations to rear window and bay
7 Blakemere Road Welwyn Garden City AL8 7PQ
Received 23 Apr 2021
Decided - Granted6/2026/0397/EMT
1 x Copper beech to reduce by approximately 3m in height and 2.5m in width. Reducing due to fast vigorous regrowth from previous works. Tree dominates garden and causes excessive shading 1 x Whitebeam to reduce by approximately 1.5m height and width. lift to clear lamp post by 1m. Reducing to maintain previous size. Lower stem decay, not excessive but keeping canopy managed reduces any risk of failure
127 Oakdale Welwyn Garden City AL8 7QS
Received 4 Mar 2026
Decided - Granted6/2017/0701/LB
Installation of en-suite to bedroom 12, add new shower cubicles and replacement of lead pipework following the removal of existing modern WCs internal partitions, as well as removal of brickwork to head of rear courtyard gate.
6 Codicote Road Welwyn AL6 9NB
Received 6 Apr 2017
Decided - Granted6/2021/2838/HOUSE
Installation of vehicular crossover and hardstanding to front
21 Deerswood Avenue Hatfield AL10 8RX
Received 4 Oct 2021
Decided - Granted6/2018/2022/FULL
Replacement of full-height windows with french doors and installation of window
6 Salvisberg Court Otto Road Welwyn Garden City AL7 3EQ
Received 2 Aug 2018
Decided - Refused6/2016/2739/EM
Replacement of front door
67 Handside Lane Welwyn Garden City AL8 6SH
Received 29 Dec 2016
Decided - Granted6/2019/1433/COND
Submission of details pursuant to condition 4 (details of bin store), condition 5 (cycle store) and condition 8 (materials samples) on planning permission 6/2018/2472/MAJ, dated 07/05/2019
Accord House Bridge Road East Welwyn Garden City AL7 1HX
Received 13 Jun 2019
Decided6/2017/1858/TPO
Reduce 1 x Black Cherry Plum tree (T1) by 800mm - Conservation Area
4 Park Close Hatfield AL9 5AY
Received 21 Aug 2017
Decided - Granted6/2019/2243/PN8
Prior approval for the erection of a single storey rear extension measuring 4m in depth, 2.9m in height and 2.9m to the eaves
67 Sloansway Welwyn Garden City AL7 1NA
Received 10 Sept 2019
Decided - Granted6/2019/1679/EM
Erection of part single part two storey rear extension
186 Thistle Grove Welwyn Garden City AL7 4AJ
Received 8 Jul 2019
Decided - Granted6/2019/2774/EM
Erection of a rear outbuilding
68 Great Ganett Welwyn Garden City AL7 3DE
Received 4 Nov 2019
Decided6/2021/1676/TC
T1 Corsican Pine - dead, remove T2 Corsican Pine - dead/partially dead ; remove or remove deadwood T3 Corsican Pine - dead, remove T4 Twin Stemmed Ash tree - remove limb over road/reduction of leaning limb by removal of selected branches and deadwood T5 Ash Tree - dead, remove T6 Conifer Tree - remove burnt limbs and branches T7 Cherry Tree - dead, remove T8 Cherry Tree - remove as leaning over fence T9 Cherry Tree - overhanging pool ; 20% crown reduction T10/T11 - Ash and Sycamore trees (treat as one) 30% crown reduction and balance canopy T12 Horse Chestnut - lift canopy to a height of 3 metres
The Doves Hill Farm Lane Ayot St Lawrence AL6 9BU
Received 25 May 2021
Decided - Granted6/2021/2482/HOUSE
Single storey side infill extension, single storey rear extension, first floor side and rear extension and conversion of roofspace to habitable use to include 2 x flank rooflights and alterations to fenestration with replacement chimney
46 Blakemere Road Welwyn Garden City AL8 7PJ
Received 24 Aug 2021
Decided - Granted6/2020/0943/HOUSE
Erection of single storey front extension
16 Birchwood Close Hatfield AL10 0PP
Received 27 Apr 2020
Decided6/2020/1231/TC
Reduce crown 1x Beech tree (T1) by 2m and crown thin by 20%
57 Parkway Welwyn Garden City AL8 6JF
Received 2 Jun 2020
Decided6/2019/3154/TC
Fell 1 x Mixed Species Group CG1 Fell 1 x Mixed Species Group SG1 Fell 1 x Cypress Lawson T2 Fell 1 x Oak Red T5 Fell 1 x Hornbeam T3 Fell 1 x Ash T4 covered by conservation area
47 Pentley Park Welwyn Garden City AL8 7SF
Received 16 Dec 2019
Decided - Granted6/2018/1613/EM
Erection of a single storey side and rear extension, following demolition of existing garage and playroom
1 Colgrove Welwyn Garden City AL8 6HY
Received 15 Jun 2018
Decided - Granted6/2023/0694/TPO
Oak tree -Full crown reduction, 30% approximately 4 metres from top and 3 metres from sides. The branches to the side are overhanging the roof of the house and near to making contact which would cause a lot of damage to the roof structure of the house.
86 Bell Lane Brookmans Park Hertfordshire AL9 7AY
Received 28 Mar 2023
Decided - Granted6/2017/1188/HOUSE
Erection of a single storey side and rear extension with alterations to openings
5 Ash Close Brookmans Park Hatfield AL9 7AX
Received 30 May 2017

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