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

303Recorded as pending

86%Approval rate · 33,806 approved or refused records

4,819Refused applications

28,987 approved · 4,819 refused · 2,218 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 8 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 Counts reflect the last collected status; some records may be out of date.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

Decided6/2020/0567/TC
Reduce Ash Tree T1 by 33% and T2 regrowth to be removed Reduce 1x Hawthorn Tree [T3] by 33% Fell 1x Ash Tree [T4]
10 Barleycroft Green Welwyn Garden City AL8 6JY
Received 27 Feb 2020
Decided - Split6/2017/1726/COND
Submission of details pursuant to condition 5 (construction method statement) and 9 (fire hydrant scheme) on planning permission 6/2016/1058/FULL, dated 15/09/2016
Bessemer Road Welwyn Garden City AL7 1HH
Received 4 Aug 2017
Decided - GrantedS6/2008/0386/FP
ERECTION OF TWO STOREY REAR & SIDE EXTENSION INCORPORATING DORMER WINDOWS
44 TOLMERS ROAD, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4JF
Received 26 Feb 2008
Decided - Refused6/2022/0557/VAR
Variation of condition 1 (materials) and condition 3 (drawings) on planning application 6/2020/2513/HOUSE
45 Hill Rise Cuffley Potters Bar EN6 4EH
Received 9 Mar 2022
Decided - Granted6/2023/0386/EM
Installation of 10 solar panels
10 Mannicotts Welwyn Garden City AL8 7BW
Received 20 Feb 2023
Decided - Withdrawn6/2023/1390/EM
Erection of a part single, part double storey side and rear extensions, replacement garage, new landscaping and widening of existing front drive and new front drive to replacement garage
16 Guessens Road Welwyn Garden City AL8 6QR
Received 4 Jul 2023
Decided - Granted6/2022/1096/FULL
Installation of an external sprinkler tack in the back of house yard area, to support the fire strategy requirements of the development.
H R Owen Mosquito Way Hatfield AL10 9WN
Received 11 May 2022
Decided - Granted6/2018/2501/TPO
Reduce 2-3 laterals by 2m of 1 x Pine tree (T1), fell 1 x Sycamore tree (T2), remove deadwood of 5 Ash tree stems (G3) and reduce lateral overhang by 2m, thin by 25% of 1 x Sycamore tree (T4) covered by TPO 683 (2017)
Claregate Thornton Road Little Heath Potters Bar EN6 1BY
Received 1 Oct 2018
Decided - Granted6/2021/1416/EMT
Fell seven conifers
31 Great Break Welwyn Garden City AL7 3EZ
Received 5 May 2021
Decided - Granted6/2021/0823/HOUSE
Erection of a first floor side extension, partial demolition of rear extension and installation of render wall finish
10 Poplar Avenue Hatfield AL10 9SF
Received 15 Mar 2021
Decided - GrantedS6/2009/1899/TP
REDUCE LATERAL BRANCHES OF OAKS TREES T1 AND T2 BY 20% COVERED BY TPO 3 W3
CEDAR HOUSE, ESSENDON PLACE, ESSENDON, HATFIELD, HERTFORDSHIRE, AL9 6GZ
Received 4 Sept 2009
Decided - Granted6/2023/0298/LAWP
Certificate of lawfulness for single storey side and rear extension
2 Barlow Close Hatfield AL10 9GZ
Received 7 Feb 2023
Decided - Granted6/2017/2665/HOUSE
Erection of first floor extension to side, single storey extension to front and part single storey, part double storey extension to rear.
6 Brookside Crescent Cuffley Potters Bar EN6 4QN
Received 15 Nov 2017
Decided - GrantedW6/2006/0607/EM
LOFT CONVERSION
6 Fearnley Road, Welwyn Garden City, AL8 6HW
Received 10 May 2006
Decided - Granted6/2020/2847/COND
Submission of details pursuant to conditions 3 (Construction Management Plan) and 4 (Ecological Method Statement) on planning permission 6/2020/0350/VAR
Land at Tollgate Farm Tollgate Road North Mymms St Albans AL4 0NY
Received 30 Oct 2020
Decided - GrantedS6/2009/1983/DS
DISCHARGE OF CONDITION 3 (MATERIALS)
130 Moffats Lane, Hatfield, AL9 7RW
Received 11 Sept 2009
Decided - WithdrawnN6/2004/1517/FP
INSTALLATION OF 5 METRE LIGHTING COLUMNS TO GARAGE FORECOURTS
GARAGES 13 - 29, MAPLE GROVE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1NQ
Received 8 Oct 2004
Decided - Refused6/2021/0590/FULL
Erection of a single storey workspace office/artist studio.
Land adjacent to 26 Starling Lane Cuffley Potters Bar EN6 4JX
Received 24 Feb 2021
Decided - GrantedN6/2014/2314/LUP
Certificate of lawfulness for a two storey rear extension, a single storey flat roof extension linking 2 two storey extension to the principle elevation that is greater than 45 degrees to the highway and single storey side extension including part demolition of existing side extensions
Oak Cottage, Ayot St Peter Road, Ayot St Peter, Welwyn, AL6 9BG
Received 21 Oct 2014
Decided - RefusedW6/2006/0461/EM
CONVERSION OF DWELLING TO FORM TWO SELF CONTAINED FLATS
14 Four Acres, Welwyn Garden City, AL7 4NW
Received 6 Apr 2006
Decided - Granted6/2020/0229/HOUSE
Erection of a single storey side and rear extension with conversion of the garage to habitable accommodation
29 Cranfield Crescent Cuffley Potters Bar EN6 4DY
Received 28 Jan 2020
Decided - Granted6/2024/0142/EM
Loft conversion with dormer to rear, insertion of conservation style roof light, insertion of window to gable end on side elevation and installation of solar pv panels and sun pipe to roof
23 Turmore Dale Welwyn Garden City AL8 6HT
Received 25 Jan 2024
Appeal Decided - DismissedS6/2009/2546/FP
ERECTION OF A TWO BEDROOM DETACHED DWELLING
Land rear of 36 Clarkes Road Hatfield AL10 0HL
Received 18 Nov 2009
Decided - Granted6/2019/0886/HOUSE
Erection of ground floor bay window to front elevation
8 Colesdale Cuffley Potters Bar EN6 4LQ
Received 11 Apr 2019

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