England · Local authority

Welwyn Hatfield planning applications

PlanningTrack collects planning applications and decisions from the public planning register of Welwyn Hatfield Borough Council. Search an address, application reference or proposal. Official Welwyn Hatfield website

Collected application statistics

Collected records · All available dates

40,295Searchable applications

322Recorded as pending

86%Approval rate · 33,786 approved or refused records

4,816Refused applications

28,970 approved · 4,816 refused · 2,217 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 7 Nov 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/0272/EMT
1 x Sweet Chestnut to reduce by 3m height & 3m width. 1 x Sweet Chestnut to fell as sapling growing through canopy that dominates a large part of the rear garden. - To encourage more light into the garden and improve the mossy lawn, by removing large sapling- this would open the central area within the canopy.
9 Fern Grove Welwyn Garden City AL8 7ND
Received 7 Feb 2022
Decided6/2023/0164/TC
To remove pine tree located at the rear of the property
13 Colgrove Welwyn Garden City Hertfordshire AL8 6HY
Received 23 Jan 2023
Decided - RefusedN6/2004/1523/FP
FIRST FLOOR SIDE EXTENSION
38 Lemsford Lane Welwyn Garden City AL8 6YJ
Received 12 Oct 2004
Decided6/2026/0459/TC
Remove oak tree (smaller of two) in the rear garden.
39 Woodland Rise Welwyn Garden City AL8 7LJ
Received 12 Mar 2026
Decided - GrantedN6/2005/1584/FP
ERECTION OF PART TWO STOREY, PART SINGLE STOREY REAR EXTENSION AND NEW GARAGE
114 Longcroft Lane Welwyn Garden City AL8 6EN
Received 22 Dec 2005
Decided - GrantedW6/2007/0309/EM
ERECTION OF REAR CONSERVATORY.
190 Blythway, Welwyn Garden City, AL7 1DU
Received 26 Feb 2007
Decided - GrantedN6/2013/0869/DS
Discharge of condition 3 (arboricultural method statement) of planning permision N6/2012/2667/FP
5 Pentley Park, WELWYN GARDEN CITY, AL8 7RT
Received 24 Apr 2013
Decided - Granted6/2021/1717/EMH
Installation of a driveway for car parking
12 Cole Green Lane Welwyn Garden City AL7 3PW
Received 28 May 2021
Decided - GrantedN6/2014/2592/TC
Semi pollard Willow tree
18 Sheepcote, Welwyn Garden City, AL7 4QD
Received 26 Nov 2014
Decided - Granted6/2020/1647/LAWP
Certificate of lawfulness for erection of single storey rear extension
4 Crop Common Hatfield AL10 0DF
Received 1 Jul 2020
Decided - Granted6/2016/0106/EM
Erection of a new rear dormer, raising existing flat roofs to front and rear dormers,front porch,side and rear extensions to facilitate installation of insulation. Including the renewal of existing roof coverings, dormer and porch.
13 Roundwood Drive, Welwyn Garden City, AL8 7JZ
Received 21 Jan 2016
Decided - Granted6/2019/1881/HOUSE
Erection of a single storey rear and side extension following demolition of garage
12 Woodside Road Digswell Welwyn AL6 0DR
Received 1 Aug 2019
Decided - Withdrawn6/2020/0181/FULL
Conversion of two existing flats at first floor to 3 x 1-bedroom flats
Beecholme 54 Codicote Road AL6 9UJ
Received 24 Jan 2020
Decided - Granted6/2021/0851/EMH
Erection of a single storey rear extension
1 Mill Green Road Welwyn Garden City AL7 3UU
Received 16 Mar 2021
Decided - GrantedW6/2014/1645/EM
Alterations to roof to form first floor creating 2 gable ends, insertion of 3 dormer windows to front elevation and 1 dormer window 2 roof lights to rear elevation
10 Aldock, Welwyn Garden City, AL7 4QF
Received 17 Jul 2014
Decided - Granted6/2016/1883/LB
Change of use of former Roche Products Factory (Class B offices, research and manufacturing) to provide 34 residential units (Class C3) across basement, ground and first to third floors, with associated external alterations including excavation to the rear lightwell of southern elevation, additional and altered fenestration to the northern and southern elevations, creation of additional car parking and associated landscaping, together with internal alterations including the subdivision and reconfiguration of floorspace, the introduction of 5 new spiral staircases and provision of servicing within the building.
Former Roche Products Site, 40 Broadwater Road, AL7 3AY
Received 14 Sept 2016
Decided - Granted6/2022/1158/EMT
T1 - Sycamore - Rear garden - Crown reduce to previous pruning points removing up to 4m in height 2.5m on lateral branches to balance T2 - Sycamore - Rear garden - Small self-set - Sectional dismantle and eco plug T3 - Ash - Rear garden - Small self-set - Sectional dismantle and eco plug T4 - Cherry - Rear garden - Two trees forming one crown - Selective prune to balance G1 - Mixed Species Group - Unmaintained - Reform and reshape T5 - Cherry - Front garden. Been heavily reduced previously. Signs of fungal brackets on tree - Selective prune to balance and monitor T6 - LIME - Rear garden - Small self set - Remove and Eco plug These works are all for general maintenance purposes
22 Ingles Welwyn Garden City AL8 7HH
Received 19 May 2022
Decided - GrantedW6/2006/0527/EM
TWO STOREY SIDE AND SINGLE STOREY REAR EXTENSION
15 High Oaks Road, Welwyn Garden City, AL8 7BJ
Received 25 Apr 2006
Decided - GrantedN6/2005/1297/FP
ERECTION OF SINGLE STOREY EXTENSION (AMENDMENT TO N6/2005/0843/FP)
138 Parkway Welwyn Garden City AL8 6HP
Received 12 Oct 2005
Decided - GrantedS6/2007/0949/FP
ERECTION OF SINGLE STOREY FRONT/SIDE AND PART REAR EXTENSION AND PART TWO STOREY REAR EXTENSION AND LOFT EXTENSION
54 Tolmers Road Cuffley Potters Bar EN6 4JF
Received 26 Jun 2007
Decided - Granted6/2025/2460/EMT
2 x Yew & 1 x Holly Reduce and shape crowns by approximately 25%
10 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 20 Nov 2025
Decided - Granted6/2021/1557/HOUSE
Erection of single and two-storey rear extension, with alterations to roof to form a flat crown roof with roof lights, erection of front porch and installation of first-floor side window, extension to garage roof with dormer window and roof lights.
32 Moffats Lane Brookmans Park AL9 7RU
Received 17 May 2021
Decided - Granted6/2022/1464/LAWP
Certificate of lawfulness for a garage conversion
54 St Albans Road East Hatfield AL10 0EH
Received 23 Jun 2022
Decided - Granted6/2019/0358/PN8
Prior approval for the erection of single storey rear extension measuring 6.00m in depth, 3.225m in heights, 3.00m to the eaves
15 Orchard Way Little Heath Potters Bar EN6 1NT
Received 13 Feb 2019

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

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Guides to planning records

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Planning permission drawings: how to read plans
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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.
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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