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

35,466Searchable applications

331Recorded as pending

86%Approval rate · 29,541 approved or refused records

3,991Refused applications

25,550 approved · 3,991 refused · 1,847 withdrawn. Received dates in our records: 29 Apr 1948 to 16 Oct 2026. Most recent record check: 23 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2025/2198/COND
Submission of details pursuant to condition15 (Materials), condition 17 (Landscape Ecological Management Plan (LEMP), condition 18 (Habitat Management and Monitoring Plan (HMMP), condition 19 (Swift Bricks, Bird and Bat Boxes), condition 20 (Cycle Storage), condition 21 (Refuse and Recycling) & condition 22 (Fire Hydrants) on planning permission 6/2024/0105/MAJ
Land north of The Meadway Cuffley Potters Bar EN6 4ET
Received 15 Oct 2025
Decided - GrantedC6/1988/7015/AD
Non illuminated signs
41 Peartree Lane, Welwyn Garden City, AL7 3UA
Received 1 Jan 1988
Decided - Granted6/2017/1077/EM
Installation of a flue to rear elevation
9 The Links Welwyn Garden City AL8 7DS
Received 17 May 2017
Decided - Granted6/2019/0686/HOUSE
Retention for erection of single storey front, rear and two storey side extension
54 Dellsome Lane Welham Green Hatfield AL9 7ND
Received 21 Mar 2019
Under Consultation6/2026/1032/COND
Submission of details pursuant of condition 18 (access) on planning permission 6/2021/3422/MAJ
Salisbury Square Hatfield AL7 5AD
Received 12 Jun 2026
Decided - RefusedN6/2014/1569/LB
Replace sliding sashes with timber double glazed units, replace weights, and repair and redecorate existing frames
The Grange 3 Codicote Road Welwyn AL6 9LY
Received 11 Jul 2014
Decided - GrantedS6/2013/0705/FP
Erection of rear and side extensions, alterations to front elevation and roof to include half hipped gables to side and front elevations and formation of dormer on rear elevation and front dormers
38 King James Avenue, Cuffley, POTTERS BAR, EN6 4LP
Received 3 Apr 2013
Decided - Granted6/2015/2509/HOUSE
Demolish existing garage to create a double story side and rear extensions, a first floor front extension and loft conversion to include raising the roof's ridge.
10 Pine Grove, Brookmans Park, Hatfield, AL9 7BS
Received 18 Dec 2015
Decided - Granted6/2018/1715/EM
Erection of single storey rear extension
171 Parkway Welwyn Garden City AL8 6JA
Received 25 Jun 2018
Decided - Granted6/2021/1689/LAWP
Certificate of lawfulness for a loft conversion to include insertion of 1 x front facing roof light and 2 x rear facing roof lights
107 Birchwood Avenue Hatfield AL10 0PT
Received 27 May 2021
Decided - GrantedS6/2014/1279/HH
Prior approval for a single storey rear extension
21 Broad Acres Hatfield AL10 9LE
Received 16 Jun 2014
Decided - Granted6/2025/0291/EM
Retrospective application for a conservatory and enclosed porch
20 Nursery Gardens Welwyn Garden City AL7 1SF
Received 18 Feb 2025
Decided - Withdrawn6/2020/2901/TC
T1 & T2 Oak - Crown reduce by 1-2m approx and remove basal growth G3 Group of Ash - Removal of stem over road (damaged) and crown reduce by 1-2m T4 Silver Birch - Reduce back low level over road T5 Hawthorn - Trim by 1m approx
1 Spindleberry Close Oaklands Welwyn AL6 0SJ
Received 6 Nov 2020
Decided - Granted6/2026/0059/HOUSE
Erection of two storey side extension
1 Crossway Welwyn Garden City AL8 7EB
Received 14 Jan 2026
Decided - GrantedS6/2015/0693/AD
Installation of two non illuminated freestanding notice boards
Salisbury Square, Hatfield, AL9 5BE
Received 27 Mar 2015
Decided - Granted6/2015/1616/HOUSE
Erection of a single storey side extension, remodelling of the existing single storey rear extension roof from flat to hipped with a crown and the bricking up of the existing garage door and insertion of a new window
57 Homewood Avenue Cuffley Potters Bar EN6 4QQ
Received 30 Jul 2015
Decided - Granted6/2017/2471/HOUSE
Erection of pitched roof on extension
15 High Dells Hatfield AL10 9JD
Received 25 Oct 2017
Appeal Decided - Dismissed6/2020/2011/HOUSE
Removal of existing chimney and raising of existing ridge height to facilitate loft conversion, including erection of rear dormer with 2 x rear facing Juliette balconies and insertion of 3 x front facing roof lights.
8 Elmoor Close Welwyn AL6 9PF
Received 11 Aug 2020
Decided - Withdrawn6/2021/2243/PN9
Prior approval for change of use of rear part of financial and professional services unit (Use Class Ec) to three dwellings (Use Class C3)
11 Town Centre Hatfield AL10 0NY
Received 27 Jul 2021
Decided - Refused6/2019/2764/LAWP
Certificate of lawfulness for the erection of an outbuilding
68 Hillcrest Hatfield AL10 8HG
Received 1 Nov 2019
Appeal Decided - Dismissed6/2019/1460/EM
Formation of hardstanding
8 Picketts Welwyn Garden City AL8 7HJ
Received 17 Jun 2019
Decided6/2018/0502/TPO
Crown reduce 1 x oak tree by 2m in height and by 2m laterally, and 1 x crown reduce ash tree up to 15% (cutting back to previous growth points). - conservation area
10 Mandeville Rise Welwyn Garden City AL8 7JU
Received 20 Feb 2018
Decided - Granted6/2017/2428/COND
Confirmation that conditions have been complied with - S6/2011/2232 - 2-24 (even) Acacia Street, Hatfield, AL10 8SZ; 20 and 22 The Wades, Hatfield, AL10 8LB; 118 and 120 Cherry Way. Hatfield, AL10 8LD (Formally known as City Church, The Wades)
Former City Church The Wades Hatfield AL10 8LB
Received 20 Oct 2017
Decided - Granted6/2015/2127/FULL
Demolition of existing dwelling and erection of 2no. 5 bedroom detached dwellings
33 Upland Drive, Brookmans Park, Hatfield, AL9 6PT
Received 14 Oct 2015

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

View all applications

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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