Award

Lansdowne Green Window Replacement

SOUTHERN HOUSING

This public procurement record has 3 releases in its history.

Award

10 Feb 2026 at 12:31

TenderUpdate

29 May 2024 at 07:50

Tender

22 May 2024 at 16:01

Summary of the contracting process

The public procurement process for the "Lansdowne Green Window Replacement" project, managed by Southern Housing, involves the installation of windows and related components at the Lansdowne Green Estate in Lambeth, London. The contracting was conducted using an open procedure, aimed at the construction industry under the category of works, with a legal framework based on the CELEX system. Initially, the estimated total contract value was 5,126,000 GBP. This tender process progressed through various stages, concluding with an award dated 10th February 2026. The procurement culminated in a contract valued at approximately 4,876,229.23 GBP, awarded on 24th March 2025 to Cosyseal (Double Glazing) Limited.

This contract presents significant opportunities for businesses involved in construction, particularly those specialising in window and door installation. With the project's scope encompassing occupied properties and communal areas, companies with expertise in managing such environments would find this tender especially advantageous. Small and medium-sized enterprises (SMEs), such as Cosyseal, which ultimately secured the contract, demonstrated competitiveness in the bidding process, which included eight bids with a criteria focus on quality and price. The procurement process, under an open procedure, further allows for electronic submissions, facilitating broader participation for qualified businesses across the UK and EU.

Find more tenders on our Open Data Platform.
How relevant is this notice?

D3 Tenders Premium

Win More Public Sector Contracts

AI-powered tender discovery, pipeline management, and market intelligence — everything you need to grow your public sector business.

Notice Title

Lansdowne Green Window Replacement

Notice Description

Installation of windows within properties owned and managed by Southern Housing. The duration of the works is four years. The estimated total contract value is 5,126,000 GBP, excluding VAT.

Lot Information

Lot 1

The scope of services are as follows: The works will be around occupied properties & communal areas consisting of: - Replacement of windows, - Replacement of Balcony doors, - Replacement of Dwelling Patio doors, - Clear out, repair, realign/ seal joints, to rainwater gutters and down pipes as needed

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0469d8
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/011833-2026
Current Stage
Award
All Stages
Tender, Award

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Open
Procurement Method Details
Open procedure
Tender Suitability
Not specified
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work


CPV Codes

45421100 - Installation of doors and windows and related components

45421131 - Installation of doors

45421132 - Installation of windows

Notice Value(s)

Tender Value
£5,126,000 £1M-£10M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
£4,876,229 £1M-£10M

Notice Dates

Publication Date
10 Feb 20261 weeks ago
Submission Deadline
21 Jun 2024Expired
Future Notice Date
Not specified
Award Date
24 Mar 202511 months ago
Contract Period
Not specified - Not specified
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Cancelled
Awards Status
Active
Contracts Status
Active

Contracting Authority (Buyer)

Main Buyer
SOUTHERN HOUSING
Contact Name
Procurement Team
Contact Email
procurement@effefftee.co.uk
Contact Phone
Not specified

Buyer Location

Locality
LONDON
Postcode
EC1M 5LA
Post Town
Central London
Country
England

Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI4 Inner London - East
Small Region (ITL 3)
TLI43 Haringey and Islington
Delivery Location
TLI London

Local Authority
Islington
Electoral Ward
Clerkenwell
Westminster Constituency
Islington South and Finsbury

Supplier Information

Number of Suppliers
1
Supplier Name

COSYSEAL (DOUBLE GLAZING

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

{
    "tag": [
        "compiled"
    ],
    "id": "ocds-h6vhtk-0469d8-2026-02-10T12:31:41Z",
    "date": "2026-02-10T12:31:41Z",
    "ocid": "ocds-h6vhtk-0469d8",
    "description": "(MT Ref:236558)",
    "initiationType": "tender",
    "tender": {
        "id": "ocds-h6vhtk-0469d8",
        "legalBasis": {
            "id": "32014L0024",
            "scheme": "CELEX"
        },
        "title": "Lansdowne Green Window Replacement",
        "status": "complete",
        "classification": {
            "scheme": "CPV",
            "id": "45421132",
            "description": "Installation of windows"
        },
        "mainProcurementCategory": "works",
        "description": "Installation of windows within properties owned and managed by Southern Housing. The duration of the works is four years. The estimated total contract value is 5,126,000 GBP, excluding VAT.",
        "value": {
            "amount": 5126000,
            "currency": "GBP"
        },
        "lots": [
            {
                "id": "1",
                "description": "The scope of services are as follows: The works will be around occupied properties & communal areas consisting of: - Replacement of windows, - Replacement of Balcony doors, - Replacement of Dwelling Patio doors, - Clear out, repair, realign/ seal joints, to rainwater gutters and down pipes as needed",
                "awardCriteria": {
                    "criteria": [
                        {
                            "name": "Method Statements",
                            "type": "quality",
                            "description": "60"
                        },
                        {
                            "type": "price",
                            "description": "40"
                        },
                        {
                            "name": "Method Statements",
                            "type": "quality",
                            "description": "60"
                        },
                        {
                            "type": "price",
                            "description": "40"
                        }
                    ]
                },
                "contractPeriod": {
                    "durationInDays": 1440
                },
                "hasRenewal": false,
                "submissionTerms": {
                    "variantPolicy": "notAllowed"
                },
                "hasOptions": false,
                "status": "cancelled"
            }
        ],
        "items": [
            {
                "id": "1",
                "additionalClassifications": [
                    {
                        "scheme": "CPV",
                        "id": "45421132",
                        "description": "Installation of windows"
                    },
                    {
                        "scheme": "CPV",
                        "id": "45421131",
                        "description": "Installation of doors"
                    },
                    {
                        "scheme": "CPV",
                        "id": "45421100",
                        "description": "Installation of doors and windows and related components"
                    }
                ],
                "deliveryAddresses": [
                    {
                        "region": "UKI"
                    },
                    {
                        "region": "UKI"
                    }
                ],
                "deliveryLocation": {
                    "description": "Lansdowne Green Estate, Lambeth, London"
                },
                "relatedLot": "1"
            }
        ],
        "submissionMethod": [
            "electronicSubmission"
        ],
        "submissionMethodDetails": "https://www.mytenders.co.uk",
        "selectionCriteria": {
            "criteria": [
                {
                    "type": "suitability",
                    "description": "As stated in the procurement documents",
                    "appliesTo": [
                        "supplier"
                    ]
                }
            ]
        },
        "documents": [
            {
                "id": "economic",
                "documentType": "economicSelectionCriteria"
            },
            {
                "id": "technical",
                "documentType": "technicalSelectionCriteria"
            }
        ],
        "contractTerms": {
            "performanceTerms": "As stated in the procurement documents",
            "hasElectronicOrdering": true,
            "electronicInvoicingPolicy": "allowed",
            "hasElectronicPayment": true
        },
        "otherRequirements": {
            "requiresStaffNamesAndQualifications": true
        },
        "procurementMethod": "open",
        "procurementMethodDetails": "Open procedure",
        "coveredBy": [
            "GPA"
        ],
        "tenderPeriod": {
            "endDate": "2024-06-21T12:00:00+01:00"
        },
        "submissionTerms": {
            "languages": [
                "en"
            ],
            "bidValidityPeriod": {
                "durationInDays": 180
            }
        },
        "awardPeriod": {
            "startDate": "2024-06-21T12:00:00+01:00"
        },
        "bidOpening": {
            "date": "2024-06-21T12:00:00+01:00"
        },
        "hasRecurrence": false,
        "amendments": [
            {
                "id": "1",
                "unstructuredChanges": [
                    {
                        "oldValue": {
                            "date": "2024-06-21T12:00:00+01:00"
                        },
                        "newValue": {
                            "date": "2024-06-28T12:00:00+01:00"
                        },
                        "where": {
                            "section": "IV.2.2",
                            "label": "Time limit"
                        }
                    },
                    {
                        "oldValue": {
                            "date": "2024-06-21T12:00:00+01:00"
                        },
                        "newValue": {
                            "date": "2024-06-28T13:00:00+01:00"
                        },
                        "where": {
                            "section": "IV.2.7",
                            "label": "Conditions for opening of tenders"
                        }
                    }
                ],
                "description": "Additional time provided to tenderers who respond, due to holiday periods"
            }
        ]
    },
    "parties": [
        {
            "id": "GB-FTS-80340",
            "name": "Southern Housing",
            "identifier": {
                "legalName": "Southern Housing"
            },
            "address": {
                "streetAddress": "59-61 Clerkenwell Road",
                "locality": "London",
                "region": "UKI",
                "postalCode": "EC1M 5LA",
                "countryName": "United Kingdom"
            },
            "contactPoint": {
                "name": "Procurement Team",
                "email": "procurement@effefftee.co.uk",
                "url": "https://www.mytenders.co.uk"
            },
            "roles": [
                "buyer"
            ],
            "details": {
                "url": "http://www.southernhousing.org.uk",
                "buyerProfile": "https://www.mytenders.co.uk/search/Search_AuthProfile.aspx?ID=AA8521",
                "classifications": [
                    {
                        "id": "BODY_PUBLIC",
                        "scheme": "TED_CA_TYPE",
                        "description": "Body governed by public law"
                    },
                    {
                        "id": "06",
                        "scheme": "COFOG",
                        "description": "Housing and community amenities"
                    }
                ]
            }
        },
        {
            "id": "GB-FTS-6989",
            "name": "Faithorn Farrell Timms LLP",
            "identifier": {
                "legalName": "Faithorn Farrell Timms LLP"
            },
            "address": {
                "streetAddress": "Central Court, 1 Knoll Rise",
                "locality": "Orpington",
                "region": "UKJ",
                "postalCode": "BR6 0JA",
                "countryName": "United Kingdom"
            },
            "contactPoint": {
                "name": "Procurement Team",
                "email": "procurement@effefftee.co.uk"
            },
            "roles": [
                "processContactPoint"
            ],
            "details": {
                "url": "https://www.effefftee.co.uk"
            }
        },
        {
            "id": "GB-FTS-66666",
            "name": "High Court of England and Wales",
            "identifier": {
                "legalName": "High Court of England and Wales"
            },
            "address": {
                "streetAddress": "The Royal Courts of Justice, The Strand",
                "locality": "London",
                "postalCode": "W22LL",
                "countryName": "United Kingdom"
            },
            "roles": [
                "reviewBody"
            ]
        },
        {
            "id": "GB-FTS-111474",
            "name": "High Court of England and Wales",
            "identifier": {
                "legalName": "High Court of England and Wales"
            },
            "address": {
                "streetAddress": "The Royal Courts of Justice, The Strand",
                "locality": "LONDON",
                "postalCode": "W22LL",
                "countryName": "United Kingdom"
            },
            "roles": [
                "mediationBody"
            ]
        },
        {
            "id": "GB-FTS-35063",
            "name": "Cabinet Office",
            "identifier": {
                "legalName": "Cabinet Office"
            },
            "address": {
                "streetAddress": "70 Whitehall",
                "locality": "London",
                "postalCode": "SW1A2AS",
                "countryName": "United Kingdom"
            },
            "roles": [
                "reviewContactPoint"
            ]
        },
        {
            "id": "GB-FTS-174014",
            "name": "Cosyseal (Double Glazing) Limited",
            "identifier": {
                "legalName": "Cosyseal (Double Glazing) Limited"
            },
            "address": {
                "streetAddress": "Unit 2, 214 Purley Way, Croydon",
                "locality": "Croydon",
                "region": "UKI",
                "postalCode": "CR0 4XG",
                "countryName": "United Kingdom"
            },
            "contactPoint": {
                "telephone": "+44 2086651331"
            },
            "roles": [
                "supplier"
            ],
            "details": {
                "scale": "sme"
            }
        }
    ],
    "buyer": {
        "id": "GB-FTS-80340",
        "name": "Southern Housing"
    },
    "language": "en",
    "awards": [
        {
            "id": "011833-2026-1-1",
            "relatedLots": [
                "1"
            ],
            "status": "active",
            "suppliers": [
                {
                    "id": "GB-FTS-174014",
                    "name": "Cosyseal (Double Glazing) Limited"
                }
            ]
        }
    ],
    "contracts": [
        {
            "id": "011833-2026-1-1",
            "awardID": "011833-2026-1-1",
            "status": "active",
            "value": {
                "amount": 4876229.23,
                "currency": "GBP"
            },
            "dateSigned": "2025-03-24T00:00:00Z"
        }
    ],
    "bids": {
        "statistics": [
            {
                "id": "1",
                "measure": "bids",
                "relatedLot": "1",
                "value": 8
            },
            {
                "id": "2",
                "measure": "smeBids",
                "relatedLot": "1",
                "value": 3
            },
            {
                "id": "3",
                "measure": "foreignBidsFromEU",
                "relatedLot": "1",
                "value": 8
            },
            {
                "id": "4",
                "measure": "foreignBidsFromNonEU",
                "relatedLot": "1",
                "value": 0
            },
            {
                "id": "5",
                "measure": "electronicBids",
                "relatedLot": "1",
                "value": 8
            }
        ]
    }
}