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

40,297Searchable applications

283Recorded as pending

86%Approval rate · 33,821 approved or refused records

4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 8 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedN6/2012/2670/DS
Discharge of conditions 9(Phasing), 11(Site Access), 12(Visibility Splays), 19(Buffer Zone) and partial discharge of conditions 1(Landscaping), 10(Highways), 14(Remediation Strategy), 20(Archaeology), 23(Highway design and surface Water Drainage) & 31(Lighting Details) in relation to Stage 2 enabling works of planning permission N6/2012/1778/OP - Planning permission is sought for the provision of site access, central spine road and the local widening of the access road footway and means of perimeter enclosure. Outline permission is sought for up to 27,773sqm of new residential floorspace, excluding garages, (Use Class C3) (GEA) with a built footprint of up to 18,500sqm, providing up to 182 residential units of up to 3.5 residential storeys, together with the retention and conversion of the Frythe building providing up to 14 units (to provide a total of up to 196 units across the site), implementation of Sustainable Urban Drainage Systems and remodelling and ecological enhancements to the existing pond, service diversions and associated connections and ancillary structures, means of perimeter enclosure and associated structures, the laying out of footpaths and associated access points, bus infrastructure and car parking, provision of soft and hard landscape schemes, including the boundary buffer treatment, playspace and lighting
The Frythe, 5 Digswell Hill, WELWYN, AL6 9AR
Received 24 Dec 2012
Decided - Granted6/2020/2412/HOUSE
Part demolition, part re-building of existing ground floor side extension, erection of 1.floor side extension, extension of existing side extension to the rear and external alterations.
1 High Grove Welwyn Garden City AL8 7DW
Received 21 Sept 2020
Decided - GrantedW6/2006/0224/EM
ERECTION OF SINGLE STOREY REAR EXTENSION
23 Barnfield Road, Welwyn Garden City, AL7 3TQ
Received 21 Feb 2006
Decided - Withdrawn6/2021/0353/EM
Demolition of brick wall due to cracking in brickwork and replace with close board fencing
2 Moorlands Welwyn Garden City AL7 4PP
Received 4 Feb 2021
Decided - GrantedW6/2008/0499/EM
ERECTION OF SINGLE STOREY SIDE EXTENSION
1 SALISBURY GARDENS, WELWYN GARDEN CITY, HERTS, AL7 3RS
Received 5 Mar 2008
Decided6/2021/2037/TC
Fell 1 x Cherry
48 Elmwood Welwyn Garden City AL8 6LE
Received 5 Jul 2021
Decided - Withdrawn6/2018/3052/PN11
Prior approval for the change of use from offices (B1(a)) to dwellinghouses (C3) to create 45 residential dwellings
Everest House Sopers Road Cuffley Potters Bar EN6 4SG
Received 28 Nov 2018
Decided - Granted6/2021/0859/HOUSE
Single storey rear extension, front garage extension, raising of existing garage roof and garage conversion.
12 The Shaws Welwyn Garden City AL7 2HR
Received 17 Mar 2021
Decided - GrantedN6/2008/0771/DS
DISCHARGE OF CONDITION 3 FROM PERMISSION N6/2008/506/FP ( SAMPLES OF MATERIALS)
9 Mannicotts, Welwyn Garden City, AL8 7BW
Received 21 May 2008
Decided - Granted6/2022/1977/FULL
Installation of a Transfusion Medicine Vet Pod and associated landscape works
Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA
Received 25 Aug 2022
Decided - GrantedN6/2014/2781/FP
Erection of an orangery
5 Briary Wood Lane Welwyn AL6 0TE
Received 31 Dec 2014
Decided - GrantedN6/2014/0642/LUP
Certificate of lawfulness for the proposed erection of single storey side and rear extension
21 Maple Grove, Welwyn Garden City, AL7 1NQ
Received 31 Mar 2014
Decided - Split6/2017/2341/COND
Submission of details pursuant to conditions 3 i-iv (Precise details of roof, windows, doors and walls) and 4 (Archaeological Investigation) on planning permission 6/2016/1650/LB dated 19/12/2016
Great Nast Hyde House Wilkins Green Lane Hatfield AL10 9RB
Received 12 Oct 2017
Decided - Granted6/2018/2377/HOUSE
Erection of single storey side extension
12 Lower Mardley Hill Welwyn AL6 0SQ
Received 17 Sept 2018
Decided - Granted6/2016/0940/HOUSE
Erection of single storey front extension
9 Oaklea Welwyn AL6 0PT
Received 13 May 2016
Decided - Granted6/2021/2601/HOUSE
Erection of a single storey rear extension
84 Pentley Park Welwyn Garden City AL8 7SG
Received 7 Sept 2021
Decided - Granted6/2018/2580/ADV
Installation of 1 x non-illuminated fascia sign - retrospective
37 Church Street Hatfield AL9 5AS
Received 8 Oct 2018
Decided - Granted6/2017/1595/HOUSE
Erection of a single storey rear extension and minor alterations to front elevation of garage roof and front gate
75 Calder Avenue Brookmans Park Hatfield AL9 7AJ
Received 21 Jul 2017
Appeal Decided - Allowed6/2024/1958/HOUSE
Combine existing single dormer windows into one continuous dormer within the front elevation
31 Reddings Welwyn Garden City AL8 7LA
Received 11 Oct 2024
Decided - GrantedS6/2013/1115/LUE
Certificate of lawfulness for the existing use of a house in multiple occupation (Use Class C4)
11 Foxhollows Hatfield AL10 0HX
Received 30 May 2013
Decided - GrantedW6/2014/1145/EM
Formation of vehicle hardstanding
25 Marley Road, Welwyn Garden City, AL7 4BT
Received 30 May 2014
Decided - GrantedW6/2004/0050/EM
ERECTION OF SINGLE STOREY REAR EXTENSION
8 The Pastures, Welwyn Garden City, AL7 4PX
Received 14 Jan 2004
Decided - RefusedS6/2008/0908/FP
ERECTION OF DETACHED DWELLING AND DETACHED GARAGE, FOLLOWING DEMOLITION OF EXISTING
56 THE RIDGEWAY, CUFFLEY, POTTERS BAR, HERTS, EN6 4BE
Received 6 Jun 2008
Decided - Granted6/2018/2274/EM
Demolition of existing dwelling and erection of new five bedroom detached dwelling with attached garage and associated driveway
10 Mannicotts Welwyn AL8 7BW
Received 5 Sept 2018

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