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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 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 Counts reflect the last collected status; some records may be out of date.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

Decided - GrantedN6/2015/0290/DS
Approval of details reserved by condition 3 (landscaping) on planning application N6/2013/1618/S73B
5 Oaklands Rise Welwyn AL6 0RN
Received 12 Feb 2015
Decided - Granted6/2019/1006/COND
Submission of details pursuant to condition 7 (external materials samples) on planning application 6/2018/2809/MAJ
Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ
Received 25 Apr 2019
Decided - GrantedN6/2013/1807/TC
Reduce Four Beech trees, Three Oak trees, Two Cherry trees, Three Silver Birch trees and One Copper Becch tree by 30% and remove One Sycamore tree
1 Barleycroft Green, WELWYN GARDEN CITY, AL8 6JY
Received 5 Aug 2013
Decided - Refused6/2021/3214/HOUSE
Installation of two rear dormers and two rooflights to facilitate the conversion of loft into habitable use.
Woodstock Hawkshead Road Little Heath Potters Bar EN6 1LU
Received 10 Nov 2021
Decided - GrantedS6/2007/1217/AD
INSTALLATION OF 3 FASCIA AND 1 PROJECTING ILLUMINATED SIGNS
Unit 13A Comet Square, Comet Way, HATFIELD, Hertfordshire, AL10 0XY
Received 13 Aug 2007
Decided - Granted6/2019/1628/ADV
Installation of x 3 internally illuminated fascia sign, 2 x internally illuminated projecting signs and 1 x internally illuminated ATM surround sign
21 Stonehills Welwyn Garden City AL8 6NA
Received 3 Jul 2019
Decided - Granted6/2018/0963/HOUSE
Erection of a single storey side extension and installation of 6 x side dormer windows to facilitate conversion of loft to habitable space
37 Cranfield Crescent Cuffley Potters Bar EN6 4DY
Received 11 Apr 2018
Decided - Granted6/2017/1421/HOUSE
Erection of single storey rear extension and alterations to openings
193 Heronswood Road Welwyn Garden City AL7 3JH
Received 30 Jun 2017
Decided - GrantedS6/2014/1024/FP
New gates and walls at the entrance from Carbone Hill
Tolmers Mews, Newgate Street, Hertford, SG13 8RG
Received 8 May 2014
Decided - Refused6/2017/1607/FULL
Change of use from existing double garage to annex (C3)
1 Stanborough Mews Welwyn Garden City AL8 6DB
Received 24 Jul 2017
Decided - GrantedS6/2013/2140/FP
Erection of rear ground and first floor extension, front ground and first floor porch extension and alterations to front elevation
82 Brookmans Avenue, Brookmans Park, Hatfield, AL9 7QQ
Received 7 Oct 2013
Decided - GrantedN6/2008/2363/FP
ERECTION OF SINGLE STOREY REAR EXTENSION
24 The Crescent Welwyn AL6 9JQ
Received 12 Dec 2008
Decided - GrantedW6/2015/1301/TE
Removal of lowest limb from broadleaf species tree and reduce Apple tree by approx 2m
4 Barleycroft Green Welwyn Garden City AL8 6JY
Received 19 Jun 2015
Appeal Decided - DismissedN6/2010/0033/FP
ERECTION OF FIRST FLOOR SIDE AND TWO STOREY REAR EXTENSION AND INSERTION OF ROOFLIGHTS
12 OAKINGTON, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 2PS
Received 11 Jan 2010
Decided - GrantedS6/2013/2648/LUP
Certificate of lawfulness for the proposed increase of existing dormer
24 Brookside Crescent, Cuffley, Potters Bar, EN6 4QN
Received 16 Dec 2013
Decided - Granted6/2019/1611/HOUSE
Erection of porch
2A Tolmers Avenue Cuffley Potters Bar EN6 4QE
Received 2 Jul 2019
Decided - Granted6/2021/0977/TPO
Trees inside TPO 640 (2017) G2: T1 Oak: 20% crown reduction (approx 2m) + removal of deadwood T2 Oak: 20% crown reduction (approx 2m) + removal of deadwood T3 Oak: 20% crown reduction (approx 2.5m) + removal of deadwood
11A Heath Road Welwyn AL6 0TP
Received 25 Mar 2021
Decided - GrantedN6/2004/1697/AD
SELF ILLUMINATING MOVING ELECTRONIC L.E.D DISPLAY SIGNAGE
Campus West The Campus
Received 17 Nov 2004
Decided6/2024/0840/TC
Beech tree - to cut back over hanging branches from 8 Parkway Gardens by approximately 2m
21 Birdcroft Road Welwyn Garden City AL8 6EH
Received 3 May 2024
Decided - GrantedN6/2007/1241/FP
ERECTION OF NEW DWELLING
Site adjoining 6 London Road Welwyn AL6 9EN
Received 17 Aug 2007
Appeal Decided - Dismissed6/2020/0902/HOUSE
Erection of a single storey garage extension to facilitate the conversion of the garage into habitable space
45 Robbery Bottom Lane Welwyn AL6 0UL
Received 20 Apr 2020
Decided - GrantedS6/2009/1333/LU
CONSTRUCTION OF TWO DORMER WINDOWS
85 THE RIDGEWAY, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4BG
Received 19 Jun 2009
Decided - GrantedN6/2007/0782/LB
REMOVAL OF WINDOW ON SIDE ELEVATION AND INSERTION OF NEW SMALLER WINDOW AND INSERTION OF ONE ADDITIONAL WINDOW AND INTERNAL ALTERATIONS IN BEDROOM
4A High Street Welwyn AL6 9EG
Received 29 May 2007
Decided - Granted6/2017/0592/HOUSE
Erection of single storey rear and side extension
16 Selwyn Avenue Ellenbrook Hatfield AL10 9NP
Received 17 Mar 2017

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