--- title: "Balloch Castle Window Replacement Project" ocid: "ocds-r6ebe6-0000802366" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000802366" markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000802366.md" json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000802366.json" source: "Public Contracts Scotland" current_stage: "Tender" buyer: "West Dunbartonshire Council" published: "2026-09-04" --- # Balloch Castle Window Replacement Project Buyer: West Dunbartonshire Council Current stage: Tender OCID: ocds-r6ebe6-0000802366 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000802366) [Download OCDS JSON](https://d3tenders.com/contract/ocds-r6ebe6-0000802366.json) ## Summary West Dunbartonshire Council is procuring building works to replace the windows at Balloch Castle, a Category A listed building in West Dunbartonshire. The scope includes window refurbishment and replacement, timber rot repairs and structural works to the west elevation. This is a conservation-led construction project, classified as building construction and works. The requirement covers one package of work at the castle rather than separate specialist lots. It will suit contractors able to manage fabric repairs and structural interventions in a listed heritage building, while coordinating the replacement and refurbishment of windows as part of a single project. The council is the contracting authority and will use electronic communication and ordering for the procurement and any resulting contract. The procurement has reached tender: West Dunbartonshire Council invited offers through an open procedure, with electronic submission required. Bids must be submitted by 2 October 2026 at 12:00, when bids are also scheduled to be opened; evaluation is scheduled to begin at that time. The contract is expected to run for 120 days. Its estimated value is £297,000. The opportunity is one lot and variant bids are not allowed. Award will be based on the tender assessment, with economic and financial standing and technical capability forming minimum selection requirements. Suppliers must provide three detailed examples of similar contracts on Category A listed buildings, supported by written declarations or references. A document fee applies to participation. This opportunity is suited to established building contractors and heritage specialists with demonstrable experience working on Category A listed buildings. Bidders need to show three comparable completed contracts and provide written declarations or references, so firms with a strong conservation portfolio and suitable client evidence will be well placed. The financial threshold requires annual turnover above £594,000 in each of the previous two years, together with a pass in at least two of three financial ratios: acid test, return on capital employed and current ratio. Required or obtainable before contract start are employers’ liability insurance of £10 million per claim, public and product liability insurance of £10 million per claim, and professional indemnity insurance of £5 million per claim. A parent company guarantee may support an otherwise eligible bidder’s financial submission. ## Notice West Dunbartonshire Council have a requirement for the replacement of the windows within the Category A listed building of Balloch Castle. These works will consist of window refurbishment and replacement, rot works as well as structural works within the west elevation. ### Lot Information Lot 1 West Dunbartonshire Council have a requirement for the replacement of the windows within the Category A listed building of Balloch Castle. These works will consist of window refurbishment and replacement, rot works as well as structural works within the west elevation. ## Key Details | Field | Value | | --- | --- | | Publication source | Public Contracts Scotland | | Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=SEP563822 | | Notice type | PCS Notice - Website Contract Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Open | | Procurement method details | Open procedure | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 4 Sep 2026 | | Submission deadline | 2 Oct 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | Not specified | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £297,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Active | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | West Dunbartonshire Council | | Locality | DUMBARTON | | Postcode area | Glasgow | | Postcode | G82 1QL | | Country | Scotland | | ITL 1 | TLM Scotland | | ITL 2 | TLM3 West Central Scotland | | ITL 3 | TLM31 East Dunbartonshire and West Dunbartonshire | | Local authority | West Dunbartonshire | | Electoral ward | Dumbarton | | Westminster constituency | West Dunbartonshire | | Delivery location | TLM81 East Dunbartonshire, West Dunbartonshire, and Helensburgh and Lomond | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45000000 - Construction work - 45210000 - Building construction work ## Release History - 4 Sep 2026 at 01:00 - Tender - PCS Notice - Website Contract Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=SEP563822 ## Documents - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=SEP563822 Balloch Castle Window Replacement Project - West Dunbartonshire Council have a requirement for the replacement of the windows within the Category A listed building of Balloch Castle. These works will consist of window refurbishment and replacement, rot works as well as structural works within the west elevation. ## Notice URLs - http:// - http://www.publiccontractsscotland.gov.uk/info/InfoCentre.aspx?ID=2343 - http://www.west-dunbarton.gov.uk/business/suppliers/procurement/ - https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000802366 - https://www.publictendersscotland.publiccontractsscotland.gov.uk ## 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-r6ebe6-0000802366. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000802366.json.