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Sky Tylers Causeway Newgate Street Hertford SG13 8QN

6/2026/0340/LAWELAWFUL DEVELOPMENT - EXISTINGApproved
Lawful development certificate

Approved on 20 April 2026

Council decision: GrantedDelegated (officer decision)

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Certificate of Lawfulness for the existing single-storey rear extension in continuous existence for a period exceeding fifteen years

Received
24 February 2026
Decision level
Delegated (officer decision)
Ward
Northaw and Cuffley
  1. Received24 Feb
  2. Validated24 Feb
  3. Consult.23 Mar
  4. Target
  5. Decided20 Apr

Decided in 55 days (council typically 56)

About this application

This is an application to amend a permission at Sky Tylers Causeway Newgate Street Hertford SG13 8QN. Welwyn Hatfield has handled 65 applications of this type. This one was decided in 55 days. There are no previous applications recorded at this address. In the past year there have been 96 applications across Northaw and Cuffley. We hold 390 applications in total for the SG13 postcode area.

72% of amendment applications at Welwyn Hatfield Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
SG13 8QN
Application type
LAWFUL DEVELOPMENT - EXISTING
Parish
Hatfield

Planning application dates

Date validated
24 February 2026
Consultation expiry
23 March 2026
Consultation end
23 March 2026

Applicant and agent

Agent address
The Old House Totteridge Green London N20 8PA

Additional information

UPRN
10014208032

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Green belt: Welwyn Hatfield
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (21)

flood storage areas, conservation areas, listed buildings, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Welwyn Hatfield

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