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

40,250Searchable applications

321Recorded as pending

86%Approval rate · 33,746 approved or refused records

4,812Refused applications

28,934 approved · 4,812 refused · 2,213 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 6 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2015/1693/HOUSE
Erection of single storey front extension and conversion of existing garage
15 East Ridgeway Cuffley Potters Bar EN6 4AW
Received 10 Aug 2015
Decided - GrantedN6/2008/0401/FP
ERECTION OF TWO STOREY REAR EXTENSION
44 LINCOLN CLOSE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 2NN
Received 26 Feb 2008
Decided - GrantedN6/2015/0952/FP
Erection of first floor rear extension
21 Elm Gardens, Welwyn Garden City, AL8 6RX
Received 1 May 2015
Decided - GrantedS6/2015/0802/DS
Approval of details reserved by condition 4 (tree protection plan), 5 (storage) and 6 (details of materials) of planning permission S6/2015/0024/FP
1 Welham Manor, Welham Green, Hatfield, AL9 7EL
Received 9 Apr 2015
Decided - Granted6/2023/2396/ADV
Replacement of non-illuminated signage with new company trading name
Lemsford Mill Lemsford Village Lemsford Welwyn Garden City AL8 7TR
Received 28 Nov 2023
Decided - Refused6/2018/3270/HOUSE
Erection of part single storey side, part two storey rear extension with alterations to openings
45 Hill Rise Cuffley Potters Bar EN6 4EH
Received 27 Dec 2018
Decided - GrantedN6/2009/0908/FP
ERECTION OF REAR CONSERVATORY
84 LORDS WOOD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 2HG
Received 22 Apr 2009
Decided - RefusedN6/2014/1621/FP
Erection of single storey front extension
6 Brooms Close, Welwyn Garden City, AL8 7JA
Received 18 Jul 2014
Decided - Granted6/2021/0779/HOUSE
Erection of a two storey side extension
156 Blythway Welwyn Garden City AL7 1DU
Received 10 Mar 2021
Decided - Granted6/2018/2229/HOUSE
Erection of single storey side and rear extension following demolition of existing side extension
37 Blakemere Road Welwyn Garden City AL8 7PQ
Received 29 Aug 2018
Decided - GrantedN6/2008/0846/DS
DISCHARGE OF CONDITIONS 2 AND 3 FROM APPLICATION N6/2007/1884/FP
1 Youngs Rise, Welwyn Garden City, AL8 6RT
Received 10 Jun 2008
Decided6/2020/2134/INT
Filming request
Stanborough Park Stanborough Road
Received 18 Aug 2020
Decided - GrantedN6/2014/0272/FP
Conversion of garage to physiotherapy room
5 Broadleaf Grove, Welwyn Garden City, AL8 7AZ
Received 3 Feb 2014
Decided - WithdrawnS6/2007/1651/FP
ERECTION OF NEW DETACHED DWELLING, FOLLOWING DEMOLITION OF EXISTING DWELLING
21 PINE GROVE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7BP
Received 5 Nov 2007
Decided - Granted6/2016/2454/TPO
Removal of Oak tree - Conservation Area
29 Woodland Rise Welwyn Garden City AL8 7LJ
Received 21 Nov 2016
Decided - Granted6/2025/1540/PN8
Prior approval for the erection of a single storey rear extension measuring 5m in depth, 2.89m in height and 2.80m to the eaves
15 Heronfield Little Heath Potters Bar EN6 1JA
Received 17 Jul 2025
Decided - Granted6/2021/0838/EMH
Attach a 2x4m lean to existing shed to store bikes
31 Bushey Ley Welwyn Garden City AL7 3HB
Received 15 Mar 2021
Decided - Refused6/2018/1471/COND
Submission of details pursuant to condition 3 (Materials samples) on planning permission 6/2018/0600/HOUSE
15 Marlborough Close Welwyn AL6 0UG
Received 31 May 2018
Decided - Granted6/2024/1789/HOUSE
The replacement of all doors and windows with new white U.P.V.C Double glazing keeping to the same style and design of the existing. The retention of a bathroom window installed which will also be replaced
47 Gresley Close Welwyn Garden City AL8 7QA
Received 17 Sept 2024
Decided - WithdrawnW6/2007/1694/EM
ERECTION OF SINGLE STOREY REAR EXTENSION & CONVERSION OF LOFT, INCORPORATING TWO DORMER WINDOWS
12 Russellcroft Road, Welwyn Garden City, AL8 6QT
Received 9 Nov 2007
Decided - GrantedW6/2007/0711/EM
TWO STOREY SIDE AND REAR EXTENSIONS AND SINGLE STOREY REAR EXTENSION.
88 Attimore Road, Welwyn Garden City, AL8 6LP
Received 9 May 2007
Decided - RefusedS6/2007/0211/FP
ERECTION OF TWO STOREY AND SINGLE STOREY SIDE EXTENSION AND FRONT AND REAR DORMER WINDOWS
63 Roe Green Close Hatfield AL10 9PF
Received 8 Feb 2007
Appeal Decided - Dismissed6/2017/1900/FULL
Erection of 4 x apartments following demolition of existing workshop
2 New Road Welwyn Garden City AL8 7TX
Received 24 Aug 2017
DecidedN6/2015/0925/NM
Non material amendment following approval of planning permission N6/2014/0185/FP - Internal layout alterations including re-positioning of windows and doors to suit
50 Reynards Road Welwyn AL6 9TP
Received 29 Apr 2015

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