--- title: "Central Substation RIBA4 & Build" ocid: "ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b.json" source: "Contracts Finder" current_stage: "Tender" buyer: "KBS MARITIME LTD" published: "2026-02-25" --- # Central Substation RIBA4 & Build Buyer: KBS MARITIME LTD Current stage: Tender OCID: ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b.json) ## Summary KBS Maritime Ltd is soliciting tenders for the "Central Substation RIBA4 & Build" project under the construction industry category, primarily taking place in and around Portsmouth, United Kingdom. The procurement process follows a selective method under a restricted procedure, currently in the tender stage with publication dated 25th February 2026. This project covers extensive site preparation, complete construction, and building installation work, classified under CPV codes 45000000, 45100000, 45200000, and 45300000. Prospective bidders should be aware that the tender period concludes on 27th March 2026, with the contract set to commence on 28th March 2026. This undertaking involves both design and build phases, specifically focusing on the RIBA stage 3 designs evolving into stage 4 and subsequently constructing and commissioning the new Central Substation building. This procurement presents significant opportunities for businesses specialising in construction work, site preparation, and building installation, particularly those that can deliver comprehensive technical design and thorough build execution. The project, valued at £1,300,000 GBP, is especially suitable for small and medium-sized enterprises (SMEs), as the procurement suitability underscores. Businesses within the British Overseas Territories, Channel Islands, Isle of Man, and throughout the United Kingdom and Europe could benefit significantly from participating. This tender provides a chance for growth, especially for firms capable of managing complex, phased projects with expertise in HV/LV electrical installations and having an understanding of building commissioning processes. Interested parties should consider how their capabilities align with the project's requirements to maximise business growth prospects. ## Notice The overarching requirement of the project is to develop the RIBA Stage 3 Design into a complete RIBA Stage 4 Technical Design and subsequently build and commission the new Central Substation building (through RIBA Stage 5 and 6). This project is split into two principal Phases as outlined below - a Design Phase (1) and a Build Phase (2), each with their own corresponding Work Packages. In summary, this Project includes the following work packages: Project Phase 1 (Design) includes the following work packages: * WP 1: Survey and assessment work to facilitate the RIBA 4 design. * WP 2: RIBA 4 Technical Design incl. all temporary works designs. * WP 3: Undertake earthing design for Central Substation. Project Phase 2 (Build) includes the following work package: * WP 4: RIBA 5 and 6: Construct, Commission and Handover the works as designed in Phase 1. Installation of HV/LV Electrical switch panels and associated cabling shall not form part of this work, and will follow as a separate project once WP 4 is complete. ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/3001bab6-7d96-4385-bc96-45eda0d78114 | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Selective | | Procurement method details | Restricted procedure | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 25 Feb 2026 | | Submission deadline | 27 Mar 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 28 Mar 2026 - 29 Mar 2026 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £1,300,000 | | 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 | KBS MARITIME LTD | | Locality | PORTSMOUTH | | Post town | Portsmouth | | Postcode | PO1 3LS | | Country | England | | ITL 1 | TLJ South East (England) | | ITL 2 | TLJ3 Hampshire and Isle of Wight | | ITL 3 | TLJ31 Portsmouth | | Local authority | Portsmouth | | Electoral ward | Charles Dickens | | Westminster constituency | Portsmouth South | | Delivery location | Not specified | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45000000 - Construction work - 45100000 - Site preparation work - 45200000 - Works for complete or part construction and civil engineering work - 45300000 - Building installation work ## Release History - 25 Feb 2026 at 11:00 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/3001bab6-7d96-4385-bc96-45eda0d78114 ## Documents - https://www.contractsfinder.service.gov.uk/Notice/3001bab6-7d96-4385-bc96-45eda0d78114 25th February 2026 - Opportunity notice on Contracts Finder - https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=103172&B=KBS Additional data - https://uk.eu-supply.com/ctm/Company/CompanyInformation/Index/153032 User / Company ## 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-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-6273252d-96a7-413c-ad97-3ea3cf17323b.json.