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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 9 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 Counts reflect the last collected status; some records may be out of date.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 - RefusedN6/2013/0815/TP
Fell to ground level Larch covered by TPO 155 T1
5 Oaklands Rise Welwyn AL6 0RH
Received 23 Apr 2013
Decided - Granted6/2021/0723/EMT
Reduce hedgerow of 4x Cherry Plum Trees by 30%
5 The Jinnings Welwyn Garden City AL7 4QB
Received 4 Mar 2021
Decided - Granted6/2019/1827/EM
Pruneing of 2/3 dead branches.
6 Ashley Close Welwyn Garden City AL8 7LH
Received 22 Jul 2019
Decided - Granted6/2025/0595/HOUSE
Erection of single storey rear and side extension following demolition of existing outbuilding and widening of existing hardstanding
13 Dellcott Close Welwyn Garden City AL8 7BB
Received 28 Mar 2025
Decided - Granted6/2016/0720/HOUSE
Conversion of garage
27 Gresley Close, Welwyn Garden City, AL8 7QA
Received 18 Apr 2016
Decided - Withdrawn6/2017/0101/PN11
Prior approval for a proposed change of use from office (Class B1) to residential (Class C3) to include the creation of 15 units
1-7 Fountain House Welwyn Garden City AL8 6AL
Received 20 Jan 2017
Decided - Granted6/2021/3154/HOUSE
Erection of a single storey rear extension to include insertion of 1 x roof lantern
27 Furzefield Road Welwyn Garden City AL7 3RL
Received 4 Nov 2021
Decided - Granted6/2016/0027/COND
Approval of details reserved by condition 3 (landscaping), 5 (site compound) and 6 (car parking) on planning application S6/2014/2588/FP
38 Thornton Road, Little Heath, Potters Bar, EN6 1JH
Received 11 Jan 2016
Decided - Granted6/2022/1544/HOUSE
Erection of single storey rear extension following demolition of conservatory
10 Duncan Close Welwyn Garden City AL7 3XP
Received 1 Jul 2022
Decided - Granted6/2020/0395/EM
Erection of a two storey side and rear extension and partial conversion of garage into habitable space
59 Digswell Park Road Welwyn Garden City AL8 7NW
Received 12 Feb 2020
Decided - Granted6/2020/0669/HOUSE
Erection of single storey garden room to rear of property
18A London Road Knebworth SG3 6JP
Received 10 Mar 2020
Decided - RefusedN6/2014/2027/FP
Erection of two storey side, single storey rear extensions, garage and loft conversion to include a rear dormer
49 Great Ley, Welwyn Garden City, AL7 4TJ
Received 11 Sept 2014
Decided - Granted6/2018/0832/EM
Part garage conversion, installation of two skylights and alterations to rear openings following demolition of existing conservatory.
144 Parkway Welwyn Garden City AL8 6HP
Received 29 Mar 2018
Decided - RefusedW6/2004/1236/EM
SINGLE STOREY REAR EXTENSION & NEW GROUND FLOOR WINDOW
9 Pentley Park, Welwyn Garden City, AL8 7RT
Received 12 Aug 2004
Decided - GrantedS6/2014/2522/TP
Crown reduce four oak trees to previous pruning points of TPO 7 A1.
27 Shrublands, Brookmans Park, Hatfield, AL9 7AL
Received 19 Nov 2014
Decided - GrantedN6/2006/0677/FP
ERECTION OF TWO STOREY REAR EXTENSION
6 Forresters Drive Welwyn Garden City AL7 2HW
Received 26 May 2006
Decided - Granted6/2018/0406/LAWE
Certificate of lawfulness for an existing HMO
45 The Runway Hatfield AL10 9GL
Received 8 Feb 2018
Decided - GrantedN6/2009/0827/TE
TO REMOVE OVERGROWN CONIFERS ON EASTERN BOUNDARY OF PROPERTY ADJOINING SPRINGFIELD HOUSE
49 MARDSEN GREEN, WELWYN GARDEN CITY, HERTS, AL8 6YD
Received 5 May 2009
Decided - Granted6/2026/0599/EMT
G1 Reduce conifer hedge back to previous growth points. T1 Fell conifer to ground level & re plant ornamental tree.
7 Guessens Road Welwyn Garden City AL8 6QW
Received 7 Apr 2026
Decided - Granted6/2019/2442/HOUSE
Retention of summer house
8 Bushey Close Welwyn Garden City AL7 3HD
Received 2 Oct 2019
DecidedS6/2008/0613/CD
INSTALLATION OF CANOPY
Green Lanes Primary School Green Lanes Hatfield AL10 9JY
Received 26 Mar 2008
Decided - Granted6/2018/1220/TPO
Reduce 1 x Silver Birch tree by 2m in height and 2.5m in width - Covered by TPO 194 (G2 - 1995)
2 Sherrards Mansion Rectory Road Welwyn Garden City AL8 7AY
Received 9 May 2018
Decided - Granted6/2018/0902/HOUSE
Erection of single storey rear extension
38 Furzefield Road Welwyn Garden City AL7 3RJ
Received 29 Mar 2018
Decided - GrantedS6/2014/0507/LUP
Hip to gable conversion, installation of rear dormer and front roof light
18 Crawford Road Hatfield AL10 0PG
Received 7 Mar 2014

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