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

40,256Searchable applications

321Recorded as pending

86%Approval rate · 33,751 approved or refused records

4,812Refused applications

28,939 approved · 4,812 refused · 2,214 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/0167/LAWP
Certificate of lawfulness for construction of a porch and a loft conversion with installation of a rear dormer
45 Swanley Crescent Little Heath Potters Bar EN6 1NQ
Received 2 Feb 2026
Decided - Withdrawn6/2022/2552/TPO
T2 and T3 Oaks - 30% crown reduction and thinning to reduce size as branches now overhanging house roof, making rodent access to loft area more likely.
15 Bracken Lane Welwyn AL6 0RB
Received 8 Nov 2022
Decided - GrantedW6/2014/1843/TE
Reduce Hornbeam tree by 25%
19 Sherrardspark Road, Welwyn Garden City, AL8 7JW
Received 6 Aug 2014
Decided - Granted6/2023/1384/COND
Confirmation that condition 7 (investigation of the site shall be carried out in accordance with BS 10175:2001 British Standards Institution Code of Practice. "The Investigation of Potentially Contaminated Sites) on planning permission S6/2003/0469/FP has been discharged
9 St Lukes Court Hatfield AL10 0FD
Received 3 Jul 2023
Decided - Granted6/2016/0676/EM
Erection of part single storey rear extension
154 Boundary Lane, Welwyn Garden City, AL7 4DF
Received 12 Apr 2016
Decided - Granted6/2020/1665/TPO
Remove x1 [T284] Elm tree Reduce x1 [T121] Horse Chestnut tree by 30% Reduce X1 [T146] Hornbeam Tree by 25% Remove x1 [T288] Elm Tree Reduce x1 [T095] Hornbeam Tree by 25% Reduce x1 [T096] Hornbeam Tree by 25% Remove x1 [T285] Elm Tree Reduce x1 [T098] Hornbeam by 25% Reduce x1 [T286] Hornbeam by 30% Reduce x1 [T116] Hornbeam tree by 30% Reduce x1 [T116] Hornbeam tree crown spread on east side over road by 30% Reduce X1 [T287] Hornbeam tree by 30% Reduce x1 [T120] Hornbeam tree by 25% Remove x1 [T114] Hawthorn tree
Land to rear of 65 Calder Avenue Hatfield AL9 7AJ
Received 10 Jul 2020
Decided - Granted6/2017/2565/HOUSE
Erection of glass covered veranda at ground floor
2 Beehive Green Welwyn Garden City AL7 4BE
Received 7 Nov 2017
Decided6/2019/0263/TPO
Fell 1 x Silver Birch tree - covered by conservation area
16 Fordwich Road Welwyn Garden City AL8 6EY
Received 5 Feb 2019
Decided - GrantedS6/2013/0164/NM
Non material amendment following approval of planning permission S6/2012/1181/MA - Amended site plans, landscape plans and elevations
University of Hertfordshire, University of Hertfordshire, College Lane, HATFIELD, AL10 9AB
Received 24 Jan 2013
Decided - Withdrawn6/2017/1743/EM
Erection of a part single, part double storey rear and single storey front extension following demolition of existing porch
227 Howlands Welwyn Garden City AL7 4HG
Received 4 Aug 2017
Appeal Decided - DismissedS6/2007/0516/MA
ERECTION OF A SINGLE BLOCK OF FLATS CONSISTING OF 13 UNITS, FOLLOWING DEMOLITION OF EXISTING.
6-8 DELLSOME LANE, NORTH MYMMS, HATFIELD, HERTFORDSHIRE, AL9 7NF
Received 29 Mar 2007
Decided - Granted6/2024/1898/TPO
1 x Oak (located in G1) to reduce the lowest limb to south east by 4-5m covered by TPO 524 (2016).
Frythe Ave Welwyn Garden City AL6 9FF
Received 3 Oct 2024
Decided - Granted6/2016/1240/MAJ
Conversion of open space to car parking and change of use of part of the building from office to training facility
East Of England Ambulance Services, Ascots Lane, Welwyn Garden City, AL7 4HL
Received 22 Jun 2016
Decided6/2017/1500/TPO
Reduce Cherry tree by 25% - Conservation Area
14 Barn Close Welwyn Garden City AL8 6ST
Received 10 Jul 2017
Decided - GrantedW6/2009/1453/EM
RETENTION OF THREE ROOF LIGHTS TO THE REAR ELEVATION
2 STANBOROUGH GREEN, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6XG
Received 13 Jul 2009
Decided - Granted6/2016/0381/COND
Approval of details reserved by condition 7 (details of the proposed conservation style roof light) on estate management permission 6/2015/2290/EM
9 Applecroft Road, Welwyn Garden City, AL8 6JZ
Received 1 Mar 2016
Decided - GrantedN6/2007/1632/FP
ERECTION OF REAR CONSERVATORY
19 Somersham Welwyn Garden City AL7 2PZ
Received 31 Oct 2007
Appeal Decided - Dismissed6/2020/2878/HOUSE
Erection of single storey rear extension and conversion of existing garage into habitable room
53 Clover Way Hatfield AL10 9FN
Received 4 Nov 2020
Decided - GrantedN6/2009/1821/DS
DISCHARGE OF CONDITIONS 4 (HARD AND SOFT LANDSCAPES) 5 (TREES AND SHRUBS) 6 (DRAINAGE WORKS) 7 ACOUSTIC BARRIER) OF PLANNING PERMISSION N6/2009/408/FP
Three Oaks Care Home 14 Gwynfa Close Welwyn AL6 0PR
Received 19 Aug 2009
Decided - Granted6/2022/1806/TPO
Oaks T1, T2 & T3 to remove epicormic growth from the stem to a height of 9m. (Amended) Trees covered by TPO 862 (2018).
8 Mandeville Rise Welwyn Garden City AL8 7JU
Received 2 Aug 2022
Decided - GrantedN6/2013/0740/DS
Discharge of condition 3c (Fence Protection) from planning permission N6/2012/2526/FP
5 Ayot Green, Ayot St Peter, WELWYN, AL6 9AB
Received 8 Apr 2013
Decided - Withdrawn6/2017/2301/VAR
Variation of condition 1 (approved plans) and 2 (materials samples) on planning permission 6/2015/2132/RM, dated 18/02/2016
Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ
Received 9 Oct 2017
Decided - Granted6/2019/0396/HOUSE
Erection of single storey front extension to facilitate conversion of garage, part two storey rear extension following demolition of conservatory, alterations to openings
107 Eddington Crescent Welwyn Garden City AL7 4SX
Received 20 Feb 2019
Decided - Refused6/2020/2213/LAWP
Certificate of lawfulness for single storey flank/side extension with flat roof and fenestration details. 9.89m in length. (Less than half the width of the original dwelling)
22 The Avenue Welwyn AL6 0PP
Received 28 Aug 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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Guides to planning records

All planning guides

Understanding planning · 13 min read
Planning application documents: what to read first
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Published 16 Jul 2026Updated 13 Sept 2026
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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.
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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.
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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.

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