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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2024/0288/TPO
Fell 2 x ash tree covered by TPO 105.
3 Woodlands Evergreen Close Woolmer Green Knebworth SG3 6JN
Received 9 Feb 2024
Decided - GrantedW6/2013/0173/EM
Alteration of front elevation from garage door to window
259 Handside Lane, WELWYN GARDEN CITY, AL8 6TF
Received 23 Jan 2013
Decided - Granted6/2016/1248/PN8
Prior approval for the erection of single storey rear extension measuring 4.8m depth, 3.5m high and 3m eaves height
30 Station Road Welham Green Hatfield AL9 7PG
Received 20 Jun 2016
Decided - Granted6/2021/2672/HOUSE
Erection of a single storey rear extension
116 Mill Green Road Welwyn Garden City AL7 3XE
Received 15 Sept 2021
Decided - Granted6/2015/2396/FULL
Rebuilding of sections to existing wall on boundary to Woodfield Lane
Twelve Apostles Church, Kentish Lane, Brookmans Park, Hatfield, AL9 6JY
Received 26 Nov 2015
Decided - Granted6/2025/0915/HOUSE
Conversion of existing garage into habitable space. Works to include installation of new rooflight, front elevation window and raising of the parapet
18 Cole Green Lane Welwyn Garden City AL7 3PW
Received 16 May 2025
Decided - GrantedW6/2006/0062/EM
ERECTION OF REAR CONSERVATORY
208 Knightsfield, Welwyn Garden City, AL8 7RQ
Received 17 Jan 2006
Decided - Granted6/2016/1788/TPO
Removal of 1 x Norway Maple covered by TPO 548 - DD Application
24 London Road, Welwyn, AL6 9JD
Received 31 Aug 2016
Decided - GrantedN6/2004/0899/FP
INSTALLATION OF A SATELLITE DISH.
12A Guessens Court Welwyn Garden City AL8 6RB
Received 3 Jun 2004
Decided - Granted6/2022/2820/EM
Erection of a single storey rear extension
16 Marsden Road Welwyn Garden City AL8 6XZ
Received 13 Dec 2022
DecidedN6/2008/1717/TE
REDUCTION OF OAK TREE BY 30% - 40% IN REAR GARDEN
3 BREAKMEAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 3HG
Received 3 Sept 2008
Decided - Granted6/2016/0474/HOUSE
Loft conversion plus installation of three rear roof lights
7 Colgrove, Welwyn Garden City, AL8 6HY
Received 22 Mar 2016
Decided - GrantedW6/2015/1221/TE
Removal of dead Cherry tree
26 Brockswood Lane Welwyn Garden City AL8 7BG
Received 9 Jun 2015
Decided - Granted6/2015/2381/ADV
Installation of 2no non illuminated fascia signs and 2no non illuminated hanging signs
1-3 Howardsgate, Welwyn Garden City, AL8 6AL
Received 23 Nov 2015
Decided - GrantedW6/2007/1668/EM
ERECTION OF FIRST FLOOR REAR EXTENSION & SINGLE STOREY REAR AND SIDE EXTENSION
15 Attimore Road, Welwyn Garden City, AL8 6LH
Received 6 Nov 2007
Decided - GrantedN6/2009/2671/NM
MINOR AMENDMENT TO PLANNING PERMISSION N6/2009/1111/FP COMPRISING OFADDITION OF WINDOW TO REAR ELEVATION AND ROOF LANTERN ON SINGLE STOREY REAR EXTENSION
39 SYLVANDALE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 2HS
Received 15 Dec 2009
Decided - RefusedS6/2013/2696/FP
Change of use of rear area of shop (A1) to residential (C3) to form 2x one bedroom units. Demolition of single storey rear addition & canopy and erection of single storey rear extension. Installation of 4 rooflights to existing flat roof
7 Manor Parade, Hatfield, AL10 9JS
Received 17 Dec 2013
Decided - Granted6/2022/0729/EMT
Removal of approx. 4m of dead/dying Privet hedge at front of property due to honey fungus infestation. Replace with new species hedgerow.
259 Handside Lane Welwyn Garden City AL8 6TF
Received 28 Mar 2022
Decided - Withdrawn6/2017/0839/TPO
1 x Plum fell to ground level and 1 x Ash fell to ground level - Conservation Area
120 Handside Lane Welwyn Garden City AL8 6SZ
Received 24 Apr 2017
Decided - GrantedW6/2008/0596/EM
FORMATION OF VEHICLE HARDSTANDING
120 OAKDALE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7QX
Received 19 Mar 2008
Decided - Granted6/2015/2130/HOUSE
Erection of a single storey front, side & rear extension
24 Bradmore Way, Brookmans Park, Hatfield, AL9 7QX
Received 14 Oct 2015
Decided - GrantedW6/2009/1955/EM
ERECTION OF SINGLE STOREY REAR AND SIDE EXTENSIONS
7 FORDWICH ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6EX
Received 16 Sept 2009
Decided - Granted6/2018/2506/LAWP
Certificate of lawfulness for the erection of single storey side extension
6 Hitherway Welwyn Garden City AL8 7RG
Received 1 Oct 2018
Decided - GrantedW6/2013/0410/EM
Erection of single storey rear extension, garden room and loft conversion with two dormer windows
8 Parkway Close, WELWYN GARDEN CITY, AL8 6HJ
Received 28 Feb 2013

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