--- title: "Stansfield Road SuDS Project, Construction partner" ocid: "ocds-h6vhtk-06ec4d" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06ec4d" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06ec4d.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06ec4d.json" source: "Find A Tender Service" current_stage: "Planning" buyer: "London Borough of Hounslow" published: "2026-08-26" --- # Stansfield Road SuDS Project, Construction partner Buyer: London Borough of Hounslow Current stage: Planning OCID: ocds-h6vhtk-06ec4d [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06ec4d) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06ec4d.json) ## Summary The London Borough of Hounslow intends to appoint a construction contractor for the Stansfield Road Sustainable Drainage Systems (SuDS) scheme in the green space beside St Dunstan’s Road and Grantley Road, near TW4 7QW, London. The works will create an attenuation basin with permanent water storage, divert an existing Thames Water sewer into it and discharge flows at a controlled rate into the existing drainage network. The scope includes excavation, new pipework, headwalls and manhole connections, four inspection chambers, a penstock valve, exceedance and flow-control chambers, basin lining and planting. It also includes removing three trees, relocating a gate and providing above- and below-ground maintenance after construction. The procurement is for drainage construction works. This procurement is at the planning stage: Hounslow has stated its intention to procure and has not yet invited tenders. It expects to use an open procedure for one lot, with the contract planned to run from 1 March 2027 to 31 May 2028. The estimated value is £275,000 excluding VAT, or £330,000 including VAT. The buyer carried out preliminary market engagement on 1 July 2026 by emailing four suppliers about the project. It identified no key themes, made no changes to the requirement and stated that no supplier received an unfair advantage. The lot is identified as suitable for small and medium-sized enterprises. Indicative timings and the proposed approach may be refined before the market invitation. The work should suit civil engineering and drainage contractors able to construct sustainable drainage infrastructure and maintain it after completion. Relevant capability includes excavation and earthworks, pipe laying, installation of manholes, inspection chambers, headwalls, penstock valves and flow-control equipment, together with basin lining and planting. Suppliers will need to plan works around live utility services and existing roads, and coordinate activities in a public green space. Experience of diverting sewers into attenuation facilities and controlling discharge into existing drainage networks would be directly relevant. Contractors should also be prepared to manage tree removal and gate relocation and to provide both above-ground and below-ground maintenance. SMEs are expressly considered suitable, so smaller specialist firms may wish to prepare for the future tender. ## Notice This is for the procurement of a contractor to construct the Stansfield Road SuDS scheme and provide above and below ground maintenance for 12 months following construction. This scheme involves the construction of an attenuation basin on the green space adjacent to St. Dunstans Road TW4 7QW including excavation, new pipework and headwalls, 4 inspection chambers, lining and planting of basin. ### Planning Information We emailed 4 suppliers with details of our project. There were no key themes identified. There were no changes made to the requirement as a result and no supplier has been given an unfair advantage. The information supplied was: The works are: • It is proposed to construct an attenuation basin in the green space bordering St. Dunstan's Road and Grantley Road. An existing Thames Water sewer will be diverted into the basin, which will have a 300mm permanent water level and provide an additional 440m3 of storage. A new manhole with a penstock will be installed at the sewer diversion point to ensure the sewer is fully diverted into the basin. The basin will then discharge flows at a controlled rate into the existing network on St. Dunstan's Road. The proposed basin will provide formalised storage within the park, reducing the risk of flooding by alleviating pressure on the existing network, and increasing amenity value to the area. • • The works associated with the construction of the attenuation basin include: • • Excavation of attenuation basin. • • Removal of 3 trees and relocation of existing gate. • • New manhole connections to the existing drainage network. • • Pipe laying. • • Installation of a penstock valve. • • Installation of an exceedance chamber. • • Installation of a flow control chamber. • • Working around live services and existing roads. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/081206-2026 | | Notice type | UK2 - Preliminary Market Engagement Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 26 Aug 2026 | | Submission deadline | Not specified | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 1 Mar 2027 - 31 May 2028 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £275,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Planning | | Lots status | Planning | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | London Borough of Hounslow | | Locality | HOUNSLOW, LONDON | | Postcode area | Twickenham | | Postcode | TW3 3EB | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI7 Outer London - West and North West | | ITL 3 | TLI75 Hounslow and Richmond upon Thames | | Local authority | Hounslow | | Electoral ward | Hounslow West | | Westminster constituency | Feltham and Heston | | Delivery location | TLI London | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45232450 - Drainage construction works - 45232451 - Drainage and surface works ## Release History - 26 Aug 2026 at 12:09 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/081206-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/081206-2026 26th August 2026 - Preliminary market engagement notice on Find a Tender ## Notice URLs - https://www.legislation.gov.uk/ukpga/2023/54/contents ## 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-h6vhtk-06ec4d. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06ec4d.json.