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

35,738Searchable applications

331Recorded as pending

86%Approval rate · 29,775 approved or refused records

4,036Refused applications

25,739 approved · 4,036 refused · 1,872 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2019/1100/EM
Erection of a two-storey rear extension, installation of 1 x rear facing dormer window to first floor and alterations to fenestration on rear elevation at ground floor level. Construction of 2 metre fence to the rear, insertion of hedge and parking space
126 Handside Lane Welwyn Garden City AL8 6SZ
Received 3 May 2019
Decided - GrantedN6/2013/1240/FP
Erection of two detached houses with associated access, garaging and landscaping following demolition of existing bungalow
11 Wendover Lodge Church Street Welwyn AL6 9LR
Received 7 Jun 2013
Under Consideration6/2026/1447/COND
Submission of details pursuant to condition 19 (effectiveness of the remediation), condition 22 (site investigation and post investigation assessment), condition 23 (drainage scheme) & condition 24 (construction details and specifications) on planning permission 6/2023/2552/OUTLINE
Land off London Road Woolmer Green SG3 6JZ
Received 18 Aug 2026
Decided6/2018/2557/TPO
Remove lower epicormic growth of 1 x Oak tree (T1) to 4m, remove dead wood and reduce the upper limbs overhanging the neighbouring property by up to 2.5m- conservation area
9 Sherrardspark Road Welwyn Garden City AL8 7JW
Received 4 Oct 2018
Decided - Granted6/2017/2529/HOUSE
Erection of a ground floor extension and studio annexe following demolition of existing lean-to garage
9 Theobalds Close Cuffley Potters Bar EN6 4HH
Received 1 Nov 2017
Decided - Granted6/2015/1904/HOUSE
Erection of a single storey front, side and rear extension, a two storey front and side extension involving the demolition of the existing garage.
371 St Albans Road West, Hatfield, AL10 9RU
Received 11 Sept 2015
Decided6/2020/0031/TC
30% Crown reduction on T1 Peartree Removal of lowest limb over 4 Youngs Rise T2 Chesnut Prune Laurel hedge by 10% T3 Prune Holly Hedge by 10% T4
6 Youngs Rise Welwyn Garden City AL8 6RU
Received 3 Jan 2020
Decided - RefusedC6/1988/0679/FP
Two storey side and first floor rear extension
5 Melbourne Court, Welwyn Garden City, AL8 6LL
Received 1 Jan 1988
Decided - Granted6/2022/1657/HOUSE
Installation of three rear rooflights to facilitate the conversion of the loft to habitable space
159 Parkway Welwyn Garden City AL8 6JA
Received 14 Jul 2022
Decided - Granted6/2021/0547/LAWP
Certificate of lawfulness for the erection of a rear dormer and rooflights to the front
32 Longmead Knebworth SG3 6JH
Received 19 Feb 2021
Decided - Granted6/2017/2477/HOUSE
Erection of part single, part first floor rear and side garage and rear extension following demolition of existing garage and conservatory. Removal of existing chimney plus material change to roof and elevations plus erection of front boundary wall and access gates
49 Tolmers Road Cuffley Potters Bar EN6 4JG
Received 26 Oct 2017
Decided - Granted6/2017/1355/COND
Submission of details pursuant to condition 1 (materials) on planning permission 6/2017/0025/HOUSE dated 6/3/2017
14 Dolesbury Drive Welwyn AL6 0QF
Received 20 Jun 2017
Decided6/2018/0231/PN11
Prior approval for change of use from offices (B1(a)) to residential (C3), creating 12 residential units
1 3 and 5 Swallow End Welwyn Garden City AL7 1JA
Received 22 Jan 2018
Decided - Granted6/2022/0151/HOUSE
Erection of a two storey side and single storey rear/side extension, installation of rear rooflights to facilitate loft conversion and conversion of garage to create study.
60 Beehive Lane Welwyn Garden City AL7 4BP
Received 21 Jan 2022
Decided - Refused6/2017/2481/HOUSE
Erection of part single, part double storey rear extension, installation of 3x roof lights, alterations to openings, raising of roof height and relocation of chimney following demolition of existing conservatory
1 Russellcroft Road Welwyn Garden City AL8 6QN
Received 27 Oct 2017
Decided - Granted6/2019/1247/FULL
Installation of chillers on the roof of the existing building
Eisai Europe Limited European Knowledge Centre Mosquito Way Hatfield AL10 9SN
Received 23 May 2019
Decided - Granted6/2019/0774/HOUSE
Installation of dormer and insertion of no. 2 rooflights to the side and front roof slopes to facilitate loft conversion. Alteration to openings at ground floor level.
28 Calder Avenue Brookmans Park Hatfield AL9 7AQ
Received 1 Apr 2019
Decided - Refused6/2022/0925/PN27
Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 8.5m in height, 7.2m length and 8.3m in width
37 Codicote Road Welwyn AL6 9TT
Received 24 Mar 2022
Decided - Granted6/2018/2872/HOUSE
Installation of windows to rear elevation and replacement of existing elevated garage door with a roller to facilitate partial conversion of garage
45 Sylvandale Welwyn Garden City AL7 2HS
Received 8 Nov 2018
Decided - Granted6/2022/2462/HOUSE
Erection of front wall with gates
28 Great North Road Welwyn Hertfordshire AL6 0PS
Received 25 Oct 2022
Decided - Granted6/2025/2355/RM
Application for the approval of reserved matters (landscaping) following the grant of Outline permission on application 6/2025/0533/OUTLINE for the single storey equestrian building over existing outdoor manege to form indoor manege and riding arena
Danecroft Riding Stables 1A Vera Lane Digswell Welwyn AL6 0EW
Received 7 Nov 2025
Decided - Granted6/2020/1611/EMT
Reduce 1 x Walnut Tree by around 1.5m & width by 3m Reduce 1 x Oak to reduce canopy by 1.5m height & 2.5m width
1 The Orchard Welwyn Garden City AL8 7PL
Received 6 Jul 2020
Decided - Granted6/2022/2385/HOUSE
Erection of single storey front and rear extensions
30 Wilga Road Welwyn AL6 9PS
Received 13 Oct 2022
Decided - Refused6/2018/2281/HOUSE
Erection of a two storey side and rear extension and loft conversion by placing a rearward facing dormer window
138 Stonecross Road Hatfield AL10 0HS
Received 6 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

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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