England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates

24,608Searchable applications

313Recorded as pending

86%Approval rate · 20,172 approved or refused records

2,787Refused applications

17,385 approved · 2,787 refused · 1,293 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 Oct 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2025/0243/EMT
Remove 3 x Thuja in sections to ground level
25 Rooks Hill Welwyn Garden City AL8 6EU
Received 11 Feb 2025
Appeal Decided - Allowed6/2018/1775/VAR
Variation of condition 3 (details windows) on planning permission 6/2015/2470/HOUSE
97 Handside Lane Welwyn Garden City AL8 6SP
Received 3 Jul 2018
Decided - Withdrawn6/2016/2083/EM
2 x Lawson Cypress trees and 5 x Holly trees to dismantle to ground level, 1x Large Ash, to lightly crown lift, to a height of 4meters and reduce low limb overhanging neighbouring property by 2meters. Left hand boundary selection of 4 x Sycamores and 6 x Holly's, to dismantle to ground level
43 Digswell Rise, Welwyn Garden City, AL8 7PP
Received 30 Sept 2016
Decided - Granted6/2024/2404/HOUSE
Erection of matching gable and entrance portico to front elevation, part single/part double storey side extension and garage, part single/part two storey rear extension with recessed balcony and loft conversion with associated rear dormers and front rooflight
68 Tolmers Road Cuffley Potters Bar EN6 4JY
Received 19 Dec 2024
Decided - Granted6/2019/1382/FULL
Increase of the ridge height of the approved commercial development and setting out the approved building a metre away from the site boundary with the road access to the approved residential development
Entech House London Road Woolmer Green SG3 6JE
Received 10 Jun 2019
Decided - Granted6/2018/1403/EM
Erection of a single side storey extension following demolition of an existing car port
81 Hertford Road Digswell Welwyn AL6 0BU
Received 24 May 2018
Appeal Decided - Dismissed6/2022/1575/FULL
Demolition of existing bungalow and erection of four bedroom detached bungalow.
61 Moffats Lane Brookmans Park Hertfordshire AL9 7RT
Received 5 Jul 2022
Decided - Granted6/2016/2639/HOUSE
Erection of single storey rear extension
34 Bluebridge Road Brookmans Park Hatfield AL9 7SA
Received 12 Dec 2016
Decided - Granted6/2020/0151/COND
Submission of details pursuant to condition 2 (site characterisation, submission and implementation of remediation scheme, and reporting contamination ) on planning permission 6/2019/1552/FULL
2 Maran Avenue Welwyn AL6 9HS
Received 22 Jan 2020
Decided - Granted6/2020/0559/HOUSE
Erection of a single story rear extension
64 Woodhall Lane Welwyn Garden City AL7 3TF
Received 27 Feb 2020
Decided - Granted6/2024/0632/HOUSE
Erection of a single storey front, side, rear extensions, two storey front and rear extensions, front and rear porch, fenestration alterations and roof alterations including crown roof, chimney removal, roof lights, and front and rear dormers
100 Brookmans Avenue Brookmans Park AL9 7QQ
Received 3 Apr 2024
DecidedS6/2015/0745/CD
Application to register land at Welham Green as a Town or Village Green
Street Record Dixons Hill Road Welham Green
Received 7 Apr 2015
Decided - Granted6/2016/2692/HOUSE
Erection of single storey rear extension with lantern and removal of chimney following demolition of existing shed
28 The Crescent Welwyn AL6 9JQ
Received 20 Dec 2016
Decided - Granted6/2025/0993/COND
Submission of details pursuant to condition number 4 (Contamination), on planning permission 6/2024/0105/MAJ
Land north of The Meadway Cuffley Potters Bar EN6 4ET
Received 28 May 2025
Decided - Granted6/2023/1971/EM
Erection of single storey front, side and rear extension, loft conversion, insertion of rooflight to rear roof elevation, alteration to opening to side elevation, garden room, plus new 2 metre high timber fence and new hedging following the demotion of existing garage
24 Beehive Lane Welwyn Garden City AL7 4BQ
Received 25 Sept 2023
Decided - Granted6/2025/1490/HOUSE
Erection of a single storey rear extension following demolition of existing conservatory
41 Langstone Ley Welwyn Garden City AL7 1FR
Received 8 Jul 2025
Decided - Granted6/2017/2872/HOUSE
Erection of a single storey rear extension, first floor rear extension and alterations to existing openings, to include insertion of sky lights to existing roof. Proposed garage conversion, erection of garden shed and extension of existing driveway.
23 Turmore Dale Welwyn Garden City AL8 6HT
Received 11 Dec 2017
Decided - Granted6/2021/1544/HOUSE
Demolition of existing single storey side extension and construction of two storey side extension and single storey rear extension.
4 Hawthorns Welwyn Garden City AL8 7SE
Received 13 May 2021
Decided - Granted6/2019/0767/HOUSE
Erection of a single storey rear extension and partial conversion of existing garage
9 Stanborough Mews Welwyn Garden City AL8 6DB
Received 1 Apr 2019
Decided - Granted6/2026/0796/EM
Proposed extension of the existing residential accommodation to provide an accessible WC and shower room. Materials, including white upvc windows, facing brickwork and a flat felt roof covering with UPVC bargeboards have been selected to match the existing dwelling and existing council stock, ensuring the extension integrates sympathetically with the host property and the surrounding area. Level access will be provided internally to the complete ground floor and with stepped access to the front entrance door
45 Dawley Welwyn Garden City AL7 1EA
Received 6 May 2026
Decided - Granted6/2022/1177/EM
Insertion of rooflight at the rear of the property in the existing single storey extension
71 Beehive Lane Welwyn Garden City AL7 4BN
Received 23 May 2022
Decided - Withdrawn6/2021/1365/HOUSE
Erection of a two storey side and rear extension and a single storey front, garage and rear extension and loft dormer
1 Ellenbrook Crescent Hatfield AL10 9RP
Received 28 Apr 2021
Decided - Granted6/2018/0550/TPO
Reduce crown of 1 x Oak tree (T1) by 4m and shape, 1 x Oak tree (T2) by 4m and shape - covered by TPO 108 (1986)
8 Mardley Wood Welwyn AL6 0UX
Received 23 Feb 2018
Decided - Granted6/2020/0285/FULL
Erection of 1x dwelling
12 Elm Drive Hatfield AL10 8NU
Received 31 Jan 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

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