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

284Recorded 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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2023/2265/TPO
T1 chestnut crown reduce tree by 2m TPO 900 (2018) and remove deadwood, T3 and T4 fell 2 x hornbeam trees to ground level TPO 800 (2018)
Brambles Briary Wood End Welwyn AL6 0TD
Received 9 Nov 2023
Decided - Granted6/2015/2499/EM
Erection of two storey and single storey rear extension
48 Raymonds Plain, Welwyn Garden City, AL7 4TF
Received 15 Dec 2015
Decided6/2020/1918/TC
Fell 1x dying and dangerous Silver Birch tree
50 Beehive Lane Welwyn Garden City AL7 4BP
Received 4 Aug 2020
Appeal Decided - DismissedS6/2015/0198/HH
Prior approval for a single storey rear extension
Tylers Cottage Tylers Causeway Newgate Street Hertford SG13 8QN
Received 2 Feb 2015
Decided - Granted6/2021/1887/COND
Submission of details pursuant to condition 3 (site waste management plan), on planning permission 6/2018/3292/MAJ
Land adjacent to 45 Broadwater Road Welwyn Garden City AL7 3AX
Received 21 Jun 2021
Decided - GrantedC6/1988/0825/FP
Single storey side extension to from car port
222 Knightsfield, Welwyn Garden City, AL8 7RB
Received 1 Jan 1988
Decided - Split6/2017/0409/COND
Submission of details pursuant to condition 2 (hard and soft landscaping), 4 (dormer windows), 7 (refuse and recycling storage) and 9 (vehicle barriers) attached to planning permission 6/2016/1647/MAJ dated 15 February 2017
Encore House 51 Great North Road Hatfield AL9 5EN
Received 2 Mar 2017
Decided - GrantedS6/2014/1254/FP
Erection of four detached dwellings, garages and access road following demolition of existing dwelling
50 Bradgate, Cuffley, Potters Bar, EN6 4SF
Received 3 Jun 2014
Decided6/2026/0229/TC
1 x Himalayan birch to remove in sections to ground level. Tree declining with mainstem. Dead 1 x Ash (left) to reduce by 3m height and 2m width - Tree becoming large and dominating at back of the garden. Reduce to allow more light and space to rest of the garden 1 x Ash (right) to reduce by 2.5m height and 1.5m width, Tree becoming large and dominating at back of the garden. Reduce to allow more light and space to rest of the garden 1 x Cockspur thorn to reduce by 1m height and width, Old tree with decayed limbs. Reducing to provide a safe structural canopy Whilst we understand tree removal often necessitates re planting, ideally we would not wish to replant as this would prolong the problem of light and space we are trying to resolve
116 Parkway Welwyn Garden City AL8 6HN
Received 9 Feb 2026
Decided - Granted6/2025/1711/HOUSE
Erection of a part two/single storey rear extension
51 Bradgate Cuffley Potters Bar EN6 4RP
Received 11 Aug 2025
Decided - Granted6/2024/0567/EM
Installation of a permeable block paved driveway and removal of hedgerow
54 Carve Ley Welwyn Garden City AL7 3HH
Received 22 Mar 2024
Decided - Granted6/2015/2386/HOUSE
Construction of a new underground swimming pool
Great Nast Hyde House, Wilkins Green Lane, Hatfield, AL10 9RB
Received 26 Nov 2015
Decided - Withdrawn6/2020/0041/TC
Removal of rear boundary Conifer Hedge between 31 and 29 Beehive Lane and replace with fencing.
31 Beehive Lane Welwyn Garden City AL7 4BJ
Received 7 Jan 2020
Decided - Granted6/2018/0124/EM
Erection of single storey rear extension including installation of 3 x rooflights - retrospective
1 Valley Road Welwyn Garden City AL8 7DG
Received 15 Jan 2018
Decided - Refused6/2020/2839/HOUSE
Erection of loft, rear and single storey side extension
75 Brookside Crescent Cuffley Potters Bar EN6 4QP
Received 29 Oct 2020
Decided - Granted6/2025/0985/EM
Replace existing windows like for like
18 Picketts Welwyn Garden City AL8 7HJ
Received 28 May 2025
Decided - Granted6/2019/0165/FULL
Erection of dwelling following demolition of existing dwelling
28 Hill Rise, Cuffley, Potters Bar, EN6 4EJ
Received 28 Jan 2019
Decided - Granted6/2021/1190/HOUSE
Single storey rear extension and garage conversion
43 Cypress Avenue Welwyn Garden City AL7 1HN
Received 13 Apr 2021
Decided - Refused6/2021/1437/TPO
Oak - fell
40 Tolmers Road Cuffley Potters Bar EN6 4JF
Received 7 May 2021
Decided - Granted6/2025/2069/EM
Replacement of utility side door and erection of a shed
53 Parkway Welwyn Garden City AL8 6JF
Received 29 Sept 2025
Decided - GrantedN6/2015/1189/TC
Removal of dead branches from Two Oak trees and Two Hornbeam trees
9 Roundwood Drive, Welwyn Garden City, AL8 7JZ
Received 3 Jun 2015
Decided - Granted6/2022/2776/HOUSE
Erection of single storey part rear extension following the demolition of existing rear conservatory and the continuation of raised patio and partial garage conversion to form larger utility room and ensuite and installation of skylights.
28 Mardley Avenue Welwyn AL6 0TZ
Received 7 Dec 2022
Decided - Granted6/2019/3007/HOUSE
Erection of single storey side extension
19 Wilkins Grove Welwyn Garden City AL8 6JS
Received 29 Nov 2019
Decided - Granted6/2022/1121/EM
Installation of solar panels on to rear roof slope
10 Walden Road Welwyn Garden City AL8 7PF
Received 16 May 2022

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