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Marlborough House, 23-29 Warrior Square

Planning application HS/FA/26/00386

Marlborough House, 23-29 Warrior Square, St Leonards-on-sea, TN37 6BG

Extensions and alterations

What is proposed

In the council’s words, from its weekly list:

Proposed cladding remediation works; installation of cavity barriers and cavity closers around all window openings; replacement of existing timber windows at ground and first floor levels with aluminium windows; replacement of existing spandrel panels to windows at second floor level and above with A1-rated aluminium spandrel panels; and local replacement of roof slates to facilitate the installation of cavity barriers.

Where it stands

The council’s file ↗

Conditions attached

The decision notice on the council’s file (published Tue 15 Sep 2026) attaches 4 conditions. In the council’s words, each with the reason it gives:

  1. Time limit to start
    The development hereby permitted shall be begun before the expiration of three years from the date of this permission.

    Reason: This condition is imposed in accordance with the provisions of Section 91 of the Town and Country Planning Act 1990.

  2. Built to the approved plans
    The works hereby permitted shall be carried out in accordance with the following approved plans: Location Plan FSFP-PRP-MAH-00-DR-A-23000 - Proposed Ground Floor Plan FSFP-PRP-MAH-01-DR-A-23001 - Proposed First Floor Plan FSFP-PRP-MAH-02-DR-A-23002 - Proposed Second Floor Plan FSFP-PRP-MAH-03-DR-A-23003 - Proposed Third Floor Plan FSFP-PRP-MAH-04-DR-A-23004 - Proposed Fourth Floor Plan FSFP-PRP-MAH-05-DR-A-23005 - Proposed Fifth Floor Plan FSFP-PRP-MAH-06-DR-A-23006 - Proposed Sixth Floor Plan FSFP-PRP-MAH-R1-DR-A-23007 - Proposed Roof Plan FSFP-PRP-MAH-XX-DR-A-24002 - Proposed North Elevation FSFP-PRP-MAH-XX-DR-A-23004 - Proposed Elevation Reveal Facing West FSFP-PRP-MAH-00-DR-A-20000 - Location Plan FSFP-PRP-MAH-00-DR-A-20001 - Site Plan FSFP-PRP-MAH-XX-DR-A-62000 - Principles Construction Sheet 1 FSFP-PRP-MAH-XX-DR-A-62001 - Principles Construction Sheet 2 FSFP-PRP-MAH-XX-DR-A-42000 Rev 04 - GA Elevations Remediation Scope South Elevation FSFP-PRP-MAH-XX-DR-A-42001 Rev 04 - GA Elevations Remediation Scope West Elevation FSFP-PRP-MAH-XX-DR-A-42002 Rev 04 - GA Elevations Remediation Scope North Elevation FSFP-PRP-MAH-XX-DR-A-42003 Rev 04 - GA Elevations Remediation Scope East Elevation FSFP-PRP-MAH-XX-DR-A-42004 Rev 04 - GA Elevation Remediation Scope Elevation Reveal Facing West FSFP-PRP-MAH-XX-DR-A-62002 Rev 04 - Principles Construction Sheet 3 FSFP-PRP-MAH-XX-DR-A-24000 Rev 02 - Proposed South Elevation FSFP-PRP-MAH-XX-DR-A-24001 Rev 02 - Proposed West Elevation FSFP-PRP-MAH-XX-DR-A-24003 Rev 02 - Proposed East Elevation FSFP-PRP-MAH-XX-DR-A-65001 Rev 04 - Window Details 2

    Reason: For the avoidance of doubt and in the interests of proper planning.

  3. Materials and design details
    Prior to the commencement of the external ground and first floor window works hereby approved, details of the proposed windows must be submitted to and approved in writing by the Local Planning Authority. The details must include elevation drawings at a scale no less than 1:20. The details must also include the proposed section drawings of any cills, heads, transoms, jambs, mullions, panels, stiles, and rails at a scale no less than 1:5. The works must be carried out in strict accordance with the approved details.

    Reason: In order to preserve the character and appearance of the Conservation area.

  4. Hours of building work
    With the exception of internal works the building works required to carry out the development allowed by this permission must only be carried out within the following times:- 08.00 - 18.00 Monday to Friday 08.00 - 13.00 on Saturdays No working on Sundays or Public Holidays.

    Reason: To safeguard the amenity of adjoining and future residents.

We copy the numbered conditions and their reasons and nothing else from the notice; its notes to the applicant are on the file. The label on each is ours, by rules on the council’s wording. The conditions the council attaches, by kind of application

Conservation and heritage on this street

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 ↗

Conservation areas, Article 4 directions and tree preservation orders: Hastings Borough Council, Open Government Licence v3.0. Street lines © OpenStreetMap contributors.

Flood zones, the coast and protected nature on this street

We place an application by the street in its address, so these say where Warrior Square runs, not where the site’s boundary is. The application’s own documents on the council’s file show the site.

Flood zones

None of Warrior Square’s line is in Flood Zone 2 or 3 on the Environment Agency’s flood map for planning. In the Agency’s words: “This means a site in flood zone 1 could still flood now or in the future.”

A street’s line is not an address. For a particular address, use the Environment Agency’s Check your long term flood risk ↗; for a planning site, its Flood map for planning ↗. Flood warnings in force now are on Live now.

The coast

The Environment Agency’s erosion map covers this frontage: one stretch of policy unit 4C24 Hastings (inc. the Harbour) ↗ 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.”

Part of Warrior Square’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.

The Environment Agency’s warnings on its erosion map, from its description of the data ↗.

The coast and its plan, unit by unit · On the map

Protected nature

No Site of Special Scientific Interest, Special Area of Conservation, Local Nature Reserve, ancient woodland or country park is within about 100 m of Warrior Square’s line, and it is outside the High Weald National Landscape. Protected nature in Hastings

Flood zones: © Environment Agency copyright and/or database right 2025. Open Government Licence v3.0. Fetched 2026-10-12.

Coastal erosion and the Shoreline Management Plan: © Environment Agency copyright and/or database right 2025. © Environment Agency copyright and/or database right 2015. Open Government Licence v3.0. Fetched 2026-10-12.

Protected sites: © Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026. Open Government Licence v3.0. Fetched 2026-10-12.

Street lines © OpenStreetMap contributors.

Comments on the application

The council’s file counts no comments from the public (as it stood on Tue 13 Oct 2026).

Who the council consulted

The bodies and officers the file lists as consulted, with the day each was asked.

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.

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 Warrior Square or in Central 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.

On Warrior Square

Elsewhere in Central St Leonards

…and 8 more of the same kind nearby. Every application on Warrior Square 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.