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

322Recorded as pending

86%Approval rate · 33,788 approved or refused records

4,816Refused applications

28,972 approved · 4,816 refused · 2,217 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 7 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 Counts reflect the last collected status; some records may be out of date.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

Decided6/2024/1977/TC
T1 Holly - Reduce crown by 30%. T2 Laurel - Reduce to 6ft in height. T3 Horse Chestnut - Reduce crown by 30%. T4 Sycamore - Reduce crown by 30%. T5 Laurel - Reduce crown by 50%. T6 Damson - Reduce crown by 20% T7 Magnolia - Reduce branches back from property by 1.5 metres
6 Youngs Rise Welwyn Garden City AL8 6RU
Received 15 Oct 2024
Decided - Granted6/2026/0065/TPO
TPO 007 Oak (T1) - Reduce canopy back to previous reduction points by pruning approximately 1.5-2.5m of regrowth and remove deadwood within crown
19 Homewood Avenue Cuffley Potters Bar EN6 4QG
Received 14 Jan 2026
Decided - Granted6/2023/0750/EM
Erection of two storey rear extension, garage conversion with addition of bay window to rear, insertion of roof lights, garden shed, drive extension with removal of tree and planting of replacement tree and alterations to openings on side and rear elevations.
17 Elmwood, Welwyn Garden City, AL8 6LD
Received 4 Apr 2023
Decided - Granted6/2022/0385/COND
Submission of details pursuant to condition 1 (sample of materials) and 2 (hard and soft landscape works) on planning application 6/2021/2804/FULL
106 Harmer Green Lane Digswell Welwyn Hertfordshire AL6 0ET
Received 18 Feb 2022
Decided - Granted6/2018/1426/PN8
Prior approval for the erection of a single storey rear extension measuring 3.6m in depth, 2.73m in height and 2.65m to the eaves
80 Boundary Lane Welwyn Garden City AL7 4DP
Received 23 May 2018
Decided - Refused6/2019/0144/FULL
Combination of two semi-detached properties into one single dwelling involving internal and external alterations
87 and 89 Harmer Green Lane Digswell Welwyn AL6 0ER
Received 24 Jan 2019
Decided - Granted6/2018/0866/HOUSE
Conversion of existing garage, removing garage door and infilling with wall and window. Extend hipped roof construction and install 1 x Velux rooflight to replace existing.
14 The Drive Welwyn AL6 0TR
Received 3 Apr 2018
Decided - Granted6/2018/0743/HOUSE
Erection of a single storey side linkage extension and installation of two dormer windows and removal of existing porch and chimney
The Firs Cottage Woodside Lane Hatfield AL9 6DF
Received 20 Mar 2018
Decided6/2020/0634/TC
Reduce 1 x Prunus Tree [T6] by 30%
41 Barleycroft Road Welwyn Garden City AL8 6JX
Received 5 Mar 2020
Decided6/2020/0320/TC
Fell 1x Apple tree
10 Dellcott Close Welwyn Garden City AL8 7BD
Received 5 Feb 2020
Decided - Granted6/2021/2294/FULL
Erection of a single storey rear extension
31 Town Centre Hatfield AL10 0JT
Received 2 Aug 2021
Decided - Granted6/2021/1697/TPO
T1 - Sweet Chestnut repollard back to previous points gaining some control and access of light. T2 - Overall reduce and shape all round by approx 25%. T3 - T6 Are all neighbours trees. Looking to cut all trees back to boundary line T3 - Oak Tree to cut tree back to boundary line. T4 - T5 Lime Trees to cut trees back to boundary line. T6 - Pine Tree to shorten just a couple of limbs back a couple of meters.
47 Mardley Hill Welwyn AL6 0TT
Received 27 May 2021
Decided - Granted6/2020/1419/EM
Removal of existing rear chimney, erection of a single storey, part two storey rear extension and insertion of window to existing first floor side elevation.
43 Brockswood Lane Welwyn Garden City AL8 7BE
Received 5 Jun 2020
Decided - GrantedS6/2015/0116/AD
Installation of 3no non-illuminated signs
Royal Mail, Hatfield Delivery Office, 38 Town Centre, Hatfield, AL10 0AA
Received 22 Jan 2015
Decided - Granted6/2016/1776/TPO
Reduce and thin Oak tree (T1) by 30% covered by TPO113 (1986)
2 Pine Crest Welwyn AL6 0EQ
Received 31 Aug 2016
Decided - Granted6/2021/1760/COND
Submission of details pursuant to condition 8 (external lighting), on planning permission 6/2018/2863/FULL
36 The Ridgeway Cuffley Potters Bar EN6 4AX
Received 4 Jun 2021
Decided - Granted6/2024/0608/FULL
Erection of a new dwelling following demolition of existing dwelling
13 Tolmers Road Cuffley Potters Bar EN6 4JF
Received 28 Mar 2024
Decided - GrantedC6/1988/7047/AD
Advert
Howardsgate, Welwyn Garden City, AL8 6BB
Received 1 Jan 1988
Decided - GrantedW6/2009/0929/EM
ERECTION OF TWO STOREY REAR EXTENSION
74 BROCKSWOOD LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7BQ
Received 11 May 2009
Decided - Refused6/2020/1727/HOUSE
Erection of a ground floor rear extension and replacement windows at ground and first floor level
95 Broomhills Welwyn Garden City AL7 1RE
Received 15 Jul 2020
Decided - GrantedN6/2006/0530/FP
ERECTION OF REAR CONSERVATORY
1 Chelveston Welwyn Garden City AL7 2PW
Received 24 Apr 2006
Decided - Granted6/2025/0954/LB
Installation of external staircase from the ground floor to the first floor accommodation. New door opening in the external flank wall, erection of canopy porch over the first floor external landing and internal alterations.
Woodman Inn 21 Warrengate Road North Mymms Hatfield AL9 7TT
Received 22 May 2025
Decided - GrantedS6/2008/1658/FP
RETENTION OF DETACHED GARAGE
42 PLOUGH HILL, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4DR
Received 21 Aug 2008
DecidedN6/2008/1992/TE
REMOVAL OF TWO POPLAR TREES FROM REAR GARDEN
24 MARSDEN ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6XZ
Received 17 Oct 2008

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

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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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