---
title: "Repairs to House of Lords Chamber Roof - Main Works"
ocid: "ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "THE CORPORATE OFFICER OF THE HOUSE OF COMMONS AND THE CORPORATE OFFICER OF THE HOUSE OF LORDS (ACTING JOINTLY)"
published: "2025-02-13"
---

# Repairs to House of Lords Chamber Roof - Main Works

Buyer: THE CORPORATE OFFICER OF THE HOUSE OF COMMONS AND THE CORPORATE OFFICER OF THE HOUSE OF LORDS (ACTING JOINTLY)  
Current stage: Tender  
OCID: ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255

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## Summary

The Corporate Officer of the House of Commons and the Corporate Officer of the House of Lords, acting jointly, are inviting tenders for a contract titled "Repairs to House of Lords Chamber Roof - Main Works." This procurement process is targeting the industry category of roof works and special trade construction, specifically focusing on cast-iron products. Located in London, the project involves substantial refurbishment tasks on the cast iron roof of the House of Lords Chamber and adjacent rooms at the Palace of Westminster. The procurement is currently in the Tender stage, following a Competitive Dialogue procedure. Key deadlines include a tender period end date on 20 March 2025, and the contract is expected to commence on 9 October 2026, concluding on 17 May 2030. The estimated contract value ranges between £21,000,000 and £31,000,000.

This tender represents a significant opportunity for businesses with expertise in historical building preservation, complex refurbishment works, and cast iron roof repairs to contribute to the prestigious and historically significant Palace of Westminster. Suitable candidates would include large construction and engineering firms capable of managing long-term, large-scale projects and adept at handling the logistical and technical challenges of working on a Grade 1 listed heritage site. By participating, businesses can establish themselves as key contributors to a renowned structure and enhance their reputation in the industry.

## Notice

The Corporate Officer of the House of Commons and the Corporate Officer of the House of Lords, acting jointly, invite requests to participate from suitable organisations who wish to tender for a contract for the Repairs to House of Lords Chamber Roof - main works. The scope includes the removal, refurbishment or replacement, and re-installation of cast iron roof components, and in-situ repairs to the supporting structure to the cast iron roof over the House of Lords (HoL) Chamber and adjacent rooms. This will be a Traditional Design (by the existing appointed consultant team) with the successful Contractor taking on design responsibility for the temporary works, scaffold, logistics and mechanical and electrical work. The HoL Chamber roof is the largest single cast iron roof at the Palace of Westminster. In plan the roof is over one thousand square metres, made up of over 5,000 individual external cast iron components. A single cast iron tile can weigh 75kg. A comprehensive overhaul of the HoL Chamber cast iron roof was carried out in 1996 and it was therefore not included in the more recent programme of cast iron roof works. Remedial works were carried out on the roof in 2015 and a survey was undertaken in 2021 which highlighted that the roof was continuing to deteriorate. Whilst temporary measures are in place, the roof now requires complete refurbishment. This project will ensure that the cast iron roof is repaired, mitigating health and safety risks and preventing irreversible heritage damage, and ensure both Houses fulfil their duty of care obligations as custodians of the Grade 1 listed building and part of a UNESCO World Heritage Site. The procurement is following a Competitive Dialogue procedure to enable dialogue on key topics where Contractor input would be beneficial such as scaffold, temporary works, logistics and programme, as well as approach to meeting the cast iron repair works specification. The overall programme for this contract is anticipated to be approximately 3.5 years, and dates are indicative, however these will be tested and confirmed during the dialogue process, taking into account feedback on the implications of, and approach to constraints that will apply. Additional documentation will be available following security clearances for the dialogue stage. Estimated contract value range includes Option X1 inflation to the end of the contract, but excludes VAT and risk/compensation events (NEC4 ECC Option B). The requirements are set out within the procurement documents which are downloadable free of charge from Atamis: https://atamis-ukparliament.my.site.com/s/Welcome If your organisation is not already registered on the UK Parliament Atamis portal, please use the URL above and click on the 'Register here' button, registration is free. Guidance on how to register is available via a link beneath the registration button. Once logged in, click on 'Find opportunities' and follow the on-screen instructions.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/280c1fb4-1f3f-4034-9cc2-f19aa9304fd3 |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Competitive dialogue (above threshold) |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 13 Feb 2025 |
| Submission deadline | 20 Mar 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 8 Oct 2026 - 17 May 2030 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £31,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | THE CORPORATE OFFICER OF THE HOUSE OF COMMONS AND THE CORPORATE OFFICER OF THE HOUSE OF LORDS (ACTING JOINTLY) |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1A 0AA |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | TLI London |

## CPV Codes

### Divisions

- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
- 45 - Construction work

### Codes

- 44470000 - Cast-iron products
- 45260000 - Roof works and other special trade construction works

## Release History

- 13 Feb 2025 at 12:17 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/280c1fb4-1f3f-4034-9cc2-f19aa9304fd3

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/280c1fb4-1f3f-4034-9cc2-f19aa9304fd3
  13th February 2025 - Opportunity notice on Contracts Finder

## Notice URLs

- https://atamis-ukparliament.my.site.com/s/Welcome

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-4087780f-620a-49bf-8cdc-da902c29d255.json.