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28,970 approved · 4,816 refused · 2,217 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/3482/EM
Erection of a single storey side extension
241 Heronswood Road Welwyn Garden City AL7 3JH
Received 14 Dec 2021
Decided - Granted6/2018/2139/HOUSE
Erection of a single storey, part two storey rear /side extension following demolition of shed
288 Knella Road Welwyn Garden City AL7 3NR
Received 17 Aug 2018
Decided - GrantedS6/2014/2520/FP
Conversion of garage into habitable accommodation
35 Tiger Moth Way, Hatfield, AL10 9LT
Received 18 Nov 2014
Decided - GrantedS6/2009/1802/DS
DISCHARGE OF CONDITIONS, 3 (MATERIALS); 4 (CROSS-SECTIONS); 5 ( LANDSCAPING); 6&7 (PLANTING/TREES/SHRUBS) 10 (CHALK MINING); 12 (VISABILITY SPLAYS); 13 (CAR PARKING); 15 (SIGHT SPLAYS); 16 (HIGHWAY MATERIAL) AND 18 ( STORAGE/DELIVERY AND WHEEL WASHING) OF PLANNING PERMISSION S6/2008/0345/FP
36 WOODS AVENUE, HATFIELD, HERTFORDSHIRE, AL10 8NA
Received 18 Aug 2009
Decided - GrantedN6/2004/0914/FP
ERECTION OF SINGLE STOREY REAR EXTENSION AND INSERTION OF DORMERS IN GARAGE ROOF TO FACILITATE USE OF ROOF SPACE.
Oakdale 1B Darby Drive Welwyn AL6 9TE
Received 16 Jun 2004
Decided - Granted6/2018/0697/HOUSE
Erection of a single storey rear extension
19 Bedwell Close Welwyn Garden City AL7 3XH
Received 14 Mar 2018
Decided - GrantedW6/2014/1658/EM
Installation of satellite dish
41 Longcroft Lane, Welwyn Garden City, AL8 6EB
Received 23 Jul 2014
Decided - GrantedN6/2015/0512/FP
Erection of single storey rear extension
43 Crossway, Welwyn Garden City, AL8 7ED
Received 10 Mar 2015
Decided - Granted6/2025/0407/LB
Urgent stabilisation and remedial works to preserve the site as a ruin of historic interest to the public
The Old Ruined Church Ayot St Lawrence Welwyn
Received 4 Mar 2025
Decided - Refused6/2022/1713/HOUSE
Erection of two storey side extension and single storey front extension, following demolition of detached garage
15 Ramsey Close Brookmans Park Hatfield AL9 6NP
Received 20 Jul 2022
Decided - Granted6/2021/0283/HOUSE
Erection of first floor extension and external alterations following demolition of single storey rear extension
45 Codicote Road Welwyn AL6 9TT
Received 1 Feb 2021
Decided6/2026/1694/TC
Reduce 1 x Weeping Ash, 2-2.5m height, 1.5-2m width. Removal of dead wood & light thin
27 Longcroft Lane Welwyn Garden City AL8 6EB
Received 25 Sept 2026
Decided - Granted6/2018/0426/HOUSE
Formation of a crossover, carriage drive, car lift and associated works.
42 The Ridgeway Cuffley Potters Bar EN6 4BA
Received 12 Feb 2018
Decided - Granted6/2022/0591/EM
Erection of Western Red Cedar-framed greenhouse adjacent to high existing close-boarded timber fence on the boundary with No.11.
13 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 14 Mar 2022
Decided - RefusedN6/2015/0362/DS
Approval of details reserved by condition 2e (soft landscaping) on planning application N6/2013/1994/DE
Former The Frythe 5 Digswell Hill Welwyn AL6 9AR
Received 20 Feb 2015
Decided - GrantedW6/2009/2298/EM
RETENTION OF SINGLE STOREY REAR EXTENSION
26 MOORLANDS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4PP
Received 14 Oct 2009
Decided - GrantedS6/2015/0467/TP
Removal of Wild Plum tree covered by TPO 2
27 Newgate Street Village, Hertford, SG13 8RA
Received 9 Mar 2015
Decided - RefusedW6/2004/1008/EM
ERECTION OF A TWO STOREY REAR EXTENSION & FORMATION OF TWO FIRST FLOOR FLANK WALL WINDOWS
223 Heronswood Road, Welwyn Garden City, AL7 3JH
Received 5 Jul 2004
Decided - Granted6/2024/0728/HOUSE
Installation of an Air Source Heat Pump
9 The Quadrangle Welwyn Garden City AL8 6SG
Received 18 Apr 2024
Decided - GrantedW6/2013/0171/EM
Erection of two storey and single storey side extensions
1 The Jinnings, WELWYN GARDEN CITY, AL7 4QB
Received 25 Jan 2013
Decided - Granted6/2018/1882/COND
Submission of details pursuant to condition 9 (habitat mitigation enhancement scheme) on planning permission N6/2012/1654/OP
City Park Watchmead Welwyn Garden City AL7 1RT
Received 18 Jul 2018
Decided - Granted6/2019/1983/EM
Fell 1x Purple Plum (T1) Reduce 1x Apple tree (T2) by 3m
3 Homerfield Welwyn Garden City AL8 6QZ
Received 9 Aug 2019
Decided - Granted6/2022/0916/HOUSE
Conversion of garage into habitable room and alteration to fenestration.
13 Chambers Grove Welwyn Garden City AL7 4FG
Received 19 Apr 2022
Decided6/2022/1469/TC
Fell conifer in front garden
11 Barleycroft Road Welwyn Garden City AL8 6JX
Received 23 Jun 2022

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