Open tenders / Building maintenance & repairs
Open tender · Notice 100606-2026
The supply and installation of UPVC Windows and Composite Doors.
- Value
- £29.8m
- Closes
- 7 Dec 2026 (29 days)
- Where
- South West
- Lots
- 1
- Suitable for SMEs
- Not stated
- Contract
- 1 Jun 2027 – 31 May 2029
In plain English
Swindon Borough Council wants an experienced contractor to supply and install UPVC windows and composite doors that meet new Building Regulations on thermal efficiency, fire escape and ventilation. The contract starts around 1 June 2027 for 2 years, with options to extend by 2 years and then 2 more; estimated spend is £9,900,000 to £9,940,000 ex VAT over the first 2 years and £29,700,000 to £29,820,000 ex VAT over the full 6 years.
Good fit for: An established window and door installer able to take on a large, multi-year council programme.
- Large contract, about £30 million over 6 years
£29,700,000.00 - £29,820,000.00 ex vat across the full 6 year term
- Must register on ProContract portal to get documents
Suppliers will need to Register as a Supplier with ProContract
- Incomplete tender submissions will be rejected
No Tender submissions will be considered without completing the tender documents in full including attachments
- Questions due 30 November 2026, bids by 7 December 2026
Tender Responses are required to be submitted no later than 7th December 2026, 15:00 hrs UK Local time
Written with AI from the official notice. Check the notice before relying on it.
What the buyer says
The supply and installation of UPVC Windows and Composite Doors. Swindon Borough Council are looking to engage with an experienced contractor for the supply and installation of UPVC windows and composite doors that will adhere to new Building Regulation requirements for thermal efficiency / fire escape and ventilation The contract will be for a period of 2 Years with optional 2 year + 2 year extension periods and is estimated to commence 1st June 2027. Estimated contract spend is between £9,900,000.00 - £9,940,000.00 ex vat across the initial 2 year term and £29,700,000.00 - £29,820,000.00 ex vat across the full 6 year term. Full details relating to the services are provided in the tender documents. To participate, Suppliers will need to Register as a Supplier with ProContract, www.supplyingthesouthwest.org.uk, then Register an Interest before obtaining access to the tender documents. In the event of difficulties registering as a supplier, please refer to the System Administrator Proactis support team [email address on the official notice] Tender clarifications to be submitted in writing via Messaging in ProContract tender portal by 30th November 2026 15:00 hrs UK Local time. The Council’s responses to these clarification questions will be issued periodically on the ProContract tender portal. Tender Responses are required to be submitted no later than 7th December 2026, 15:00 hrs UK Local time via ProContract tender portal - https://www.supplyingthesouthwest.org.uk/ Supplying the South West Portal, https://www.supplyingthesouthwest.org.uk/ is the only portal that includes all the relevant documents required to respond to this opportunity, bearing Project Id: DN833983 No Tender submissions will be considered without completing the tender documents in full including attac…
Getting the documents
supplyingthesouthwest.org.uk (the buyer's own site, usually free to register).
Procedure: Open procedure (Open: anyone can bid, in one stage). Published 23 Oct 2026.
What similar contracts went for
Similar contracts went for £8.2m to £27.3m (6 since 2025; 6 won by small firms).
| Contract | Won by | Value | Awarded |
|---|---|---|---|
| 181119 Window and Door Replacement in Housing Stock Moray Council | Sidey Solutions Limited SME | £9.9m | 23 Sep |
| Windows, Doors & Sealed Units Bournemouth, Christchurch and Poole Council | Paramount Window & Fascia Limited SME | £9m | 7 Sep |
| Repair, Replacement of Windows, Doors and associated Works - ID557 - STAR Housing Shropshire Towns and Rural Housing | Lutley Windows Limited SME | £27.3m | 26 Mar |
| EBC - Windows & Doors Lewes District Council | Booker & Best Ltd SME | £13.5m | 8 Dec |
| LDC - Windows & Doors Lewes District Council | Booker & Best Ltd SME | £10.8m | 8 Dec |
| NYC Provision of Replacement Windows and Doors The North Yorkshire Council | Kingfisher Upvc Windows & Doors Limited SME | £8.2m | 1 Dec |
From the award notices on Find a Tender and Public Contracts Scotland. Values are as each notice states them and cover the contract's whole term: most notices give the value before VAT, but about one in seven gives only a figure including VAT. AI picked these as the same kind of work and can be wrong, so check what each one included before you price.
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