6 and 7 Grosvenor Gardens, St Leonards-on-sea, TN38 0AE
Extensions and alterations
What is proposed
In the council’s words, from its weekly list:
Removal of front west side shared chimney stack between 6 and 7 Grosvenor Gardens and associated work including reinstating fire wall and slate finishes where chimney stack is removed
Measured along the street’s line against the council’s boundaries. Whether a particular building is inside depends on where the boundary runs: each area’s page on the council’s site has its map. All 18 conservation areas
The council’s Article 4 direction on houses in multiple occupation covers the whole town (in force since 2 July 2012): turning a house into a shared house for three to six people needs planning permission. The council’s page ↗
Flood zones, the coast and protected nature on this street
We place an application by the street in its address, so these say where Grosvenor Gardens runs, not where the site’s boundary is. The application’s own documents on the council’s file show the site.
Flood zones
All of Grosvenor Gardens is in Flood Zone 3 (the sea). That is the Environment Agency’s flood map for planning, which shows land that could flood from rivers or the sea, ignoring the benefits of any existing flood defences.
Locations in flood zone 3 have a high probability of flooding.
This means, in any year, land has:
a 1% (1 in 100) or more chance of flooding from rivers
a 0.5% (1 in 200) or more chance of flooding from the sea.
Flood zone 3 developments need a flood risk assessment as part of their planning application.
The Environment Agency’s erosion map covers this frontage: one stretch of policy unit 4C25 Bulverhythe and Glyne Gap ↗ in the Shoreline Management Plan, whose policy is Hold the line (Maintain/replace) in all three periods, 2005 to 2105: “Where protection is currently provided by coastal defence structures or managed beaches, and the intention is to retain a defence along approximately the current alignment. This will involve replacing defences when needed. Defence type, method and standard of protection may be modified over time.”
With Shoreline Management Plans delivered: 0 m by 2055, 0 m by 2105.
No Future Intervention: 8 m by 2055, 23 m by 2105.
Part of Grosvenor Gardens’s line is inside the map’s No Future Intervention zone to 2105, and none of it inside the zone to 2105 with the plan delivered.
The figures are the width of the map’s erosion zone, inland from today’s shoreline, on the Higher Central allowance. In the Agency’s words: “Two periods: Medium Term (up to 2055) and Long Term (up to 2105).” “Two management scenarios: With Shoreline Management Plans delivered and No Future Intervention.” “Three climate scenarios: Present Day climate (2020), Higher Central allowance and Upper End allowance. The two allowances use sea level rise data from UKCP18 RCP8.5 70th and 95th percentiles respectively.” “All distances are cumulative over time and given in metres.”
The data and associated information are intended for guidance only - it cannot provide details for individual properties.
The data shows areas of land likely to be at erosion risk but does not show the precise future position of the shoreline.
Erosion may happen faster or slower than what we show, and risk may change over time.
No Site of Special Scientific Interest, Special Area of Conservation, Local Nature Reserve, ancient woodland or country park is within about 100 m of Grosvenor Gardens’s line, and it is outside the High Weald National Landscape. Protected nature in Hastings
The council’s file counts no comments from the public (as it stood on Thu 15 Oct 2026).
Who the council consulted
The bodies and officers the file lists as consulted, with the day each was asked.
Conservation, asked Wed 24 Jun 2026
West St Leonards Neighbourhood Forum, asked Fri 15 May 2026
Building Control, asked Fri 15 May 2026
Consultee responses on the file
Responses filed as consultee comments, named as the file names them, with the day each was published. What they say is in each document on the council’s file.
CONSERVATION OFFICER COMMENTS (CONS OFFICER), Fri 15 May 2026
WEST ST LEONARDS FORUM, Tue 16 Jun 2026
CONSERVATION OFFICER COMMENTS (CONS OFFICER), Wed 24 Jun 2026
Is a comment public?
The council’s page on commenting says: “All comments will be made available to view online and will be treated in accordance with our privacy policy. Comments will be redacted where they contain personal information or are inappropriate in their content.” It also says: “Please note that we do not accept anonymous comments.” Commenting on an application, on the council’s site ↗ (read 13 October 2026).
We count the comments on the council’s file. We never copy a commenter’s name, address or words, and we don’t list who objected: that is on the file.
Similar applications nearby
Other applications of the same kind (extensions and alterations) on Grosvenor Gardens or in West St Leonards ward, decided ones first, since our record starts on 21 April 2026. A refusal is marked; its reasons are in the decision notice on the council’s file. Each application is decided on its own facts.
Replacement of door with window and replacement of two windows with single window to ground floor rear elevation. Replacement of first and second floor rear windows from timber sash windows to white sash UPVC windows. Enlarge second floor window to front elevation (amended description).
HS/FA/26/00465, validated Mon 10 Aug 2026, decided in the week of Mon 5 Oct 2026
Construction of a single-storey side extension, enlargement of the existing front window, and installation of roof-mounted solar photovoltaic panels to the existing dwelling and proposed extension.
HS/FA/26/00426, validated Wed 15 Jul 2026, decided in the week of Mon 21 Sep 2026
Single storey upwards extension to create first floor together with alterations to existing garage roof form, fenestration changes to side and rear elevations and the installation of solar panels to the rear roof slope.
HS/FA/26/00331, validated Thu 25 Jun 2026, decided in the week of Mon 24 Aug 2026
Proposed demolition of existing conservatory and erection of rear extension with external alterations including replacement decking and guarding (amended description)
HS/FA/26/00310, validated Mon 25 May 2026, decided in the week of Mon 24 Aug 2026
Erection of a single storey front extension (amended description)
HS/FA/26/00259, validated Fri 15 May 2026, decided in the week of Mon 29 Jun 2026
Refused permission
…and 1 more of the same kind nearby. Every application on Grosvenor Gardens is on its page.
If you think work doesn’t match what was approved
The council’s planning enforcement team looks into building work or a use that may not have permission, or may not follow the approved plans or conditions. Its page explains how to report it and which cases it deals with first: planning enforcement on the council’s site ↗
Our planning record starts on 21 April 2026, from the council’s weekly lists of new and decided applications. We list the site, the proposal, the dates, the decision, the comment counts and a permission’s conditions. We never copy a commenter’s or an individual applicant’s details; an applicant is named only when it is an organisation we can match exactly to a council, a registered charity or a company on Companies House. Planning is decided by the council, not by us.