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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - GrantedN6/2013/0696/FP
Erection of single storey side extension and rear porch, pitched gabled roof over existing single storey side flat roof, following demolition of existing conservatory
26 The Avenue Welwyn AL6 0PP
Received 3 Apr 2013
Decided - Granted6/2025/0148/EM
Erection of first floor rear extension, enlargement of garage and roof height increase, single storey extension to rear of garage and changes to fenestration. Dead tree in south-west corner of garden to be felled
20 Rooks Hill Welwyn Garden City AL8 6ET
Received 28 Jan 2025
Decided - RefusedS6/2009/1131/FP
ERECTION OF TWO STOREY SIDE EXTENSION AND NEW FRONT GABLE TO ROOF
MANOR COTTAGE, VINEYARDS ROAD, NORTHAW, POTTERS BAR, HERTS, EN6 4PQ
Received 26 May 2009
Decided - Refused6/2017/2847/HOUSE
Erection of single storey front and rear extensions, erection of front porch, roof alterations and part garage conversion following demolition of rear conservatory
31 Glebe Road Welwyn AL6 9PB
Received 6 Dec 2017
Decided - Granted6/2017/2877/PN8
Prior approval for the erection of a single storey rear extension measuring 4.00m in depth, 2.95m in height, 2.80m to the eaves
13 Little Thistle Welwyn Garden City AL7 4AE
Received 11 Dec 2017
Decided - Withdrawn6/2023/0346/OUTLINE
Outline permission for the erection of a 1.5 storey detached dwelling with all matters reserved except for means of access and layout
32 Elm Drive Hatfield Hertfordshire AL10 8NU
Received 14 Feb 2023
DecidedN6/2008/2207/TE
REMOVAL OF SILVER BIRCH TREE FROM REAR GARDEN
14 HIGH OAKS ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7BH
Received 21 Nov 2008
Decided6/2019/0450/TPO
Fell 1 x Goat Willow tree - covered by conservation area
45 Fordwich Road Welwyn Garden City AL8 6EY
Received 27 Feb 2019
Decided - GrantedS6/2007/0924/FP
ERECTION OF FIRST FLOOR REAR EXTENSION.
23 Calder Avenue Brookmans Park Hatfield AL9 7AH
Received 19 Jun 2007
Decided - GrantedN6/2006/0022/FP
ERECTION OF SINGLE STOREY REAR EXTENSION
20 Dellcott Close Welwyn Garden City AL8 7BD
Received 9 Jan 2006
Decided - GrantedN6/2009/1506/MA
Demolition of existing buildings and erection of eleven, 3 bed and two, 4 bed dwellings with associated parking and access
Land adjacent to 55 Mardley Hill Welwyn AL6 0TT
Received 15 Jul 2009
Decided - Granted6/2020/0650/EM
Erection of a single storey front extension and alterations to fenestration
17 High Oaks Road Welwyn Garden City AL8 7BJ
Received 9 Mar 2020
Decided - Granted6/2016/1365/COND
Approval of details reserved by condition 2 (materials) and condition 3 (noise) on planning permission 6/2016/0286/FULL
Progress House, Shire Park, The Boulevard, Welwyn Garden City, AL7 1GB
Received 4 Jul 2016
Decided - GrantedN6/2013/1354/FP
Erection of single storey rear extension
56 Boundary Lane, WELWYN GARDEN CITY, AL7 4DP
Received 27 Jun 2013
Decided - Granted6/2025/1766/EM
Replacement of soffits facias and guttering with UPVC
45 Attimore Road Welwyn Garden City AL8 6LG
Received 19 Aug 2025
Decided - Withdrawn6/2019/1415/LAWP
Certificate of lawfulness for works to the rear of the property including external walls, flat roof, set of external rear doors and internal alterations to the existing layout
44 Crookhams Welwyn Garden City AL7 1PF
Received 12 Jun 2019
Decided6/2020/2691/TC
Reduce 2x Hornbeam (T1-2) to 2.5 meters in height (to existing hedge height) Fell 1 x Hornbeam (T3) to ground level and grind stump.
133 Sweet Briar Welwyn Garden City AL7 3EB
Received 15 Oct 2020
Decided - Granted6/2018/2936/LAWE
Certificate of lawfulness for use of buildings as commercial
Colesdale Farm Northaw Road West Northaw Potters Bar EN6 4QZ
Received 14 Nov 2018
Decided - Granted6/2021/0975/HOUSE
Erection of first floor extension above existing garage, alterations to existing single storey side and rear extensions including pitched roof, alterations to rear dormer and alterations to windows.
75 Tolmers Road Cuffley Potters Bar EN6 4JJ
Received 25 Mar 2021
Decided6/2018/1949/TPO
Fell and grind line of Laurel and replace/ replant with new Laurel hedge -Conservation area
43 Bridge Road Welwyn Garden City AL8 6UG
Received 24 Jul 2018
Decided - Granted6/2016/2259/PN15
Prior approval for the installation of a POGONA cabinet measuring 1230x400x1032mm at ground level, installation of a 11.7m monopole with Holophane Vmax, swap out on a like for like basis of the existing antennas, installation of additional Mast Head Amplifier's (MHA's) and associated development thereto following removal of existing lamppost
Lampost 18, Bericot Way, Welwyn Garden City AL7 2BQ
Received 27 Oct 2016
Decided - Granted6/2020/1705/COND
Submission of details pursuant to condition 1 [Sample of materials] on planning permission 6/2019/1717/HOUSE
5 Mimram Walk Welwyn AL6 9EZ
Received 13 Jul 2020
Decided - Withdrawn6/2024/2051/TC
SG1 - Clematis, rose, wisteria. Remove close to ground level and treat stumps with herbicide to inhibit regrowth. T2 - Oak. Remove close to ground level and treat stumps with herbicide to inhibit regrowth
16-18 Hyde Cottage Cromer Hyde Lane Lemsford Welwyn Garden City AL8 7XE
Received 23 Oct 2024
Decided - Granted6/2020/2506/COND
Submission of details pursuant to conditions 1 (noise insulation), 6 (cycle parking), 7 (landscaping) and 10 (plant/equipment noise levels) on planning permission 6/2020/0656/FULL
Unit 3 Swallow End Welwyn Garden City AL7 1JA
Received 30 Sept 2020

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

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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