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

22,353Searchable applications

295Recorded as pending

86%Approval rate · 18,162 approved or refused records

2,571Refused applications

15,591 approved · 2,571 refused · 1,155 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/0452/EM
Erection of first floor rear extension
189 Boundary Lane Welwyn Garden City AL7 4EJ
Received 24 Feb 2022
Decided - Granted6/2017/2682/PN8
Prior approval for the erection of a single storey rear extension measuring 6.0m in depth, 3.5m in height and 3.0m to the eaves.
12 Broad Acres Hatfield AL10 9LD
Received 16 Nov 2017
Decided - Granted6/2025/2017/VAR
Variation of Condition 3 (Technical highways plans) and Condition 15 (approved plans) on planning permission 6/2025/0654/FULL
Land adjacent to 51 Great North Road Stanborough AL8 7TJ
Received 19 Sept 2025
Decided - Granted6/2024/1147/EM
Installation of an air source heat pump
9 The Quadrangle Welwyn Garden City AL8 6SG
Received 19 Jun 2024
Decided - Granted6/2018/2489/EM
Internal alteration to the subdivision between two existing shops (A1) and demolition of the existing garages to provide open parking spaces in the rear yard
179 Handside Lane Welwyn Garden City AL8 6TA
Received 1 Oct 2018
Decided6/2022/1228/TC
3 x groups of small self set Ash to fell to ground level 1 x Hornbeam to fell to ground level, the client wishes to install a patio area close to the tree and landscape the remaining section of the garden 1 X Twin stemmed sycamore to reduce by 1.5m height & width 1 x Sycamore to reduce by 2.5m height & 1m width
9 Parkway Close Welwyn Garden City AL8 6HJ
Received 25 May 2022
Decided - Granted6/2017/0568/COND
Submission of details pursuant to condition 2 (Materials) attached to planning permission 6/2015/1588/FULL dated 14 December 2015
94 Harmer Green Lane Digswell Welwyn AL6 0EP
Received 20 Mar 2017
Decided6/2020/1226/FULL
Retrospective application for change of use of the land to allow for use as a depot of highways maintenance services including open storage of machinery, vehicles and aggregates; siting of portacabins; and retention of fuel tank for a temporary period (Site 3)
Land at Roehyde Ryders Avenue A414 North Orbital Road Hatfield AL4 0RZ
Received 2 Jun 2020
Decided6/2023/0811/TC
Laurel to reduce by 2m in height, reduce width on left side to 1m inside boundary line. Reduce remaining width by around 1m.
71 Valley Road Welwyn Garden City AL8 7DR
Received 17 Apr 2023
Decided - Granted6/2020/3159/LAWP
Certificate of lawfulness for erection of pool house over existing outdoor pool within rear garden, with pool building to include provision of home gym, pool change, hot tub and sauna.
22 Hawkshead Lane Hatfield AL9 7TB
Received 25 Nov 2020
Decided - Refused6/2023/0639/LB
Replace 2 rotten fixed wood framed windows at the end of the building on the ground floor with equivalent fixed wood framed windows; replace 2 rotten sash wood framed windows at the front of the building on the ground floor with equivalent (double glazed) sash wood framed windows; repair of one sash window at the front of the building on the first floor; prepare and re-paint all wooden windows in white and frames in black as per existing
41 High Street Welwyn AL6 9EF
Received 22 Mar 2023
Decided - Granted6/2021/2018/TPO
Cedar - trim by 15%
1 Burleigh Mead Hatfield AL9 5ED
Received 2 Jul 2021
Decided - Granted6/2017/0298/LB
Replacement roof to existing garage, including roof lights and alterations to openings
St Michaels Woodside Wildhill Road Brookmans Park Hatfield AL9 6DL
Received 16 Feb 2017
Decided6/2026/1369/TC
1 x Spruce to fell.
52 Newfields Welwyn Garden City AL8 6YT
Received 3 Aug 2026
Appeal Decided - Dismissed6/2018/2677/TPO
Fell 3 x Lime Trees (T4,T5,T6) and replant with hedging, crown treduce by 20% 1 x Lime Tree (T2) and 1 x London Plane Tree (T1) - Covered by TPO 165 (1991)
4A Ambar Kelly Ltd Bridgefields Welwyn Garden City AL7 1RX
Received 18 Oct 2018
Decided - Granted6/2025/0742/PN27
Prior approval for the erection of new roof, new walls above existing walls to form new first floor walls, following the removal of existing roof
19 The Avenue Welwyn AL6 0PW
Received 17 Apr 2025
Under Consideration6/2025/0847/OUTLINE
Outline application for residential development of up to 25 dwellings and open space with all matters reserved except access
Land adjacent to 52 London Road Knebworth SG3 6HG
Received 2 May 2025
Decided - Granted6/2018/2871/PN11
Prior approval for the change of use from office (B1) to residential (C3)
56 Bridge Road East Welwyn Garden City AL7 1JU
Received 7 Nov 2018
Decided - Granted6/2025/2122/HOUSE
Erection of a single storey front and side extension and a single storey rear extension
41 Chelwood Avenue Hatfield AL10 0RF
Received 6 Oct 2025
Decided - Granted6/2016/0887/MAJ
Erection of three storey residential block (with basement parking) comprising of 9no two bedroom and 3no one bedroom flats with associated access, off-street parking, amenity space and landscaping following demolition of existing car showroom
Cuffley Motor Company Ltd 71 Station Road Cuffley Potters Bar EN6 4HZ
Received 9 May 2016
Decided - Granted6/2022/0311/HOUSE
Remodelling of existing dwelling to include erection of a two storey front extension, garage conversion, new front porch, part two storey and single storey rear extension following the demolition of existing single storey lean to conservatories, alterations to roof including raising the ridge, loft conversion and installation of rear dormer. Formation of new vehicular crossover and landscape works.
19 Bradgate Cuffley Potters Bar Hertfordshire EN6 4RW
Received 10 Feb 2022
Decided - Granted6/2022/1614/HOUSE
Erection of ground floor rear extension, single storey front extension, fenestration alterations/additions, raising ridge of existing rear roof to match main ridge height, new rear dormers with living space in the roof, insertion of rooflights and external brickwork painted white
5 Brookmans Avenue Brookmans Park Hatfield AL9 7QH
Received 8 Jul 2022
Decided - Granted6/2021/0125/EM
Erection of new 1.8 meters high SW panel fencing
97 Handside Lane Welwyn Garden City AL8 6SP
Received 15 Jan 2021
Decided - Granted6/2017/1209/COND
Submission of details pursuant to: condition 1 (hard and soft landscape plan); condition 2 (samples of materials); condition 7 (car parking); condition 8 (noise assessment), on planning permission 6/2016/0490/FULL
14 The Avenue Welwyn AL6 0PN
Received 1 Jun 2017

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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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