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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/1043/EM
Erection of a single storey rear extension
10 Little Ganett Welwyn Garden City AL7 3DG
Received 29 Mar 2021
Decided6/2025/0973/TC
1 x Sycamore in the Garden of 9 High Oaks Road - to reduce back lateral branches growing over the tennis courts at the back by 2m
9 High Oaks Road Welwyn Garden City AL8 7BJ
Received 27 May 2025
Decided - Granted6/2024/1296/FULL
Continuation of the use of land for the storage of trailers for a temporary period of 5 years
G T Towing Great North Road Hatfield AL9 5SD
Received 9 Jul 2024
Decided - WithdrawnW6/2006/0122/EM
ERECTION OF GARDEN SHED
53 Woodhall Lane, Welwyn Garden City, AL7 3TB
Received 31 Jan 2006
Decided - Granted6/2026/1105/HOUSE
Erection of a single storey rear extension and garage conversion
2 Beauchamps Welwyn Garden City AL7 1FG
Received 25 Jun 2026
Decided - Granted6/2021/1343/EMT
Prune 2 x Himalayan Birch according to reduce crown height and spread by approximately 1-1.5 metres to enhance natural form and retain size.
36 Parkway Welwyn Garden City AL8 6HQ
Received 26 Apr 2021
Decided - Granted6/2026/0253/EM
Repair and convert outbuildings on the side of my property into useable spaces. Expansion of driveway to provide safe access to the front door from my vehicles.
17 Guessens Road Welwyn Garden City AL8 6QL
Received 13 Feb 2026
Decided - Granted6/2018/1343/HOUSE
Erection of a two single-storey side extensions following demolition of existing conservatory
Tolmers Lodge Carbone Hill Northaw Hertford SG13 8RG
Received 21 May 2018
Decided - Granted6/2021/2837/EM
Erection of a two storey rear extension, a single storey side/rear extension, a porch to front elevation and conversion of loft to habitable use
2 Fearnley Road Welwyn Garden City AL8 6HW
Received 1 Oct 2021
Decided - Granted6/2023/0228/EMT
T1 - Reduce by 33% between 1-2m all. Acacia tree is overhanging the pathway and the roof of the Barn Theatre
Welwyn Garden Hebrew Congregation Synagogue Barn Close Welwyn Garden City AL8 6ST
Received 30 Jan 2023
DecidedN6/2014/1690/TC
Reduce the length of the five longest, lateral branches growing over the road by 2 metres and remove 2 failed branch stubs back to collar of cedar tree
Shaws Corner, Bibbs Hall Lane, Ayot St Lawrence, Welwyn, AL6 9BX
Received 28 Jul 2014
Decided - Refused6/2021/1296/FULL
Refurbishment of ground and first floor of existing office, erection of a two storey mezzanine, insertion of windows to north, south and east elevations
Magellan House 5 Bessemer Road Welwyn Garden City AL7 1GF
Received 22 Apr 2021
Decided - Granted6/2019/1661/EM
Installation of driveway with associated soft landscaping works
82 Thistle Grove Welwyn Garden City AL7 4AQ
Received 5 Jul 2019
Decided - GrantedW6/2004/1124/EM
IN-FILL TO FRONT PORCH
35 Long Ley, Welwyn Garden City, AL7 2HE
Received 21 Jul 2004
Decided6/2025/0917/TC
Oak to crown lift to 5m in height, and remove deadwood (to encourage new planting scheme).
29 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 16 May 2025
Decided - Granted6/2021/1095/TPO
Ash/Rowan - Reduce height and width by 30%
12 The Drive Welwyn AL6 0TR
Received 24 Mar 2021
Decided - Granted6/2022/1504/EM
Single storey rear extension and replacement garage
134 Lemsford Lane, Welwyn Garden City, AL8 6YP
Received 28 Jun 2022
Decided - Granted6/2020/0668/HOUSE
Erection of a single storey, part two storey rear and single storey side extension side and alterations to openings on existing first floor side elevation
51 Oakdale Welwyn Garden City AL8 7QP
Received 10 Mar 2020
DecidedN6/2008/1973/TC
REMOVAL OF ORNAMENTAL TREE AT IMMEDIATE FRONT OF PROPERTY
35 BROCKSWOOD LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7BE
Received 8 Oct 2008
Decided - GrantedW6/2007/0819/EM
REDUCTION OF HARDSTANDING AND INSTALLATION OF BIKE STORE
24/26 Applecroft Road, Welwyn Garden City, AL8 6LA
Received 7 Jun 2007
Decided - GrantedS6/2004/1340/FP
ERECTION OF SINGLE STOREY SIDE EXTENSION
HILLSIDE, VINEYARDS ROAD, NORTHAW, POTTERS BAR, HERTFORDSHIRE, EN6 4PE
Received 7 Sept 2004
Decided - Granted6/2024/1661/EM
Installation of 12 x solar panels to the south facing roof pitches
7 Honeycroft Welwyn Garden City AL8 6HR
Received 30 Aug 2024
Decided - Refused6/2018/2042/HOUSE
Installation of rooflights & replacement of UPVC windows with white metal windows
31 - 33 Ayot Green Ayot St Peter Welwyn AL6 9AB
Received 2 Aug 2018
Decided - GrantedW6/2004/1723/EM
REPLACEMENT WINDOWS TO FRONT ELEVATION AND REAR PATIO DOORS
50 Digswell Park Road, Welwyn Garden City, AL8 7NS
Received 22 Nov 2004

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