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#h6vhtk-05f8eb
Published 24 Jun 2026, 15:19 BST
Official UK Procurement Procedure
00350-AST Whole House Retrofit Installation Works 2026-2030
Published value
£62,200,000
Submission deadline
2 Feb 2026, 12:00 GMT
Lots published
4
Contract duration
Standard
Electronic Sourcing Gateway:
Published portal
Submission deadline passed
The official deadline for this opportunity was 2 Feb 2026, 12:00 GMT. External portal workspaces, tender packs, or clarification messaging may now be restricted or archived by the contracting authority.
What is being bought & procurement scope
Procurement Scope & Specification
Executive Summary: Stonewater Ltd: "00350-AST Whole House Retrofit Installation Works 2026-2030". Published status: complete. Published value: £62,200,000. 4 published lots. Recorded submission deadline: 2 Feb 2026, 12:00 GMT. See the official notice for participation instructions.
Official Requirement Description:
Stonewater would like to appoint suitable contractors to deliver it's 2026-2030 retrofit programme. Our programme is informed by the Net Zero Investment Plan and includes the delivery of retrofit works across multiple funding streams.
Works must be carried out in compliance with PAS2035 and PAS2030. The measures to be installed will include but not be limited to:
- Insulation
- Windows and doors
- Heating systems
- Solar PV
- Ventilation
Works will be delivered nationally but split into 4 regional lots. Contractors will be expected to deliver whole house retrofit and at least one element must involve self-delivery.
The estimated contract value of £62.2m (incl VAT) is across all lots. Please see lot information to see how each lot is split value wise over the duration of the first 4 years.
Lots and requirements (4)
Procurement Structure
- Lot 1 · #1Individual lot title not publishedcompletePublished valueNot publishedThe source published no individual title or description for this lot.Contract period:Not publishedEligibility:Not published
- Lot 2 · #2Individual lot title not publishedcompletePublished valueNot publishedThe source published no individual title or description for this lot.Contract period:Not publishedEligibility:Not published
- Lot 3 · #3Individual lot title not publishedcompletePublished valueNot publishedThe source published no individual title or description for this lot.Contract period:Not publishedEligibility:Not published
- Lot 4 · #4Individual lot title not publishedcompletePublished valueNot publishedThe source published no individual title or description for this lot.Contract period:Not publishedEligibility:Not published
Qualification snapshot & criteria
Go / No-Go Decision Box
Evaluation weighting
Award criteria weighting not published in structured data — consult the tender pack documents.
Incumbent & Market Position
Top Retained Vendor (Authority Spend)EdenstoneHolds 65.3% of historical attributable spend
High ConcentrationEntry requirements & qualification
Turnover Benchmark
Insurance Commitments (No Upfront Purchase Needed)
Accreditations & Security Vetting
Published track record for Stonewater Ltd. These figures describe rolling 24 months, not a forecast of bids or a measure of buyer bias.
Avg price drop
Not availableEarly / insufficient sample
Competition Density
9Bids / Report (median)
Supplier Concentration
Published spend
£9,796,450Historical spend
Methodology & coverage notes (5 active published awards)
Coverage: 5 active published awards; 7 bid reports (which may be per lot). Supplier values exclude multi-supplier awards, frameworks and DPS, and use GBP only. They are published award values, not payments. Published-to-award variance compares single-lot, single-award, single-supplier GBP procedures with explicitly non-framework/non-DPS status; increases remain in the average. Unpublished data stays unknown. Awarded suppliers are winners, not all bidders.
Historical Awarded Suppliers in this Category (CPV 45):
Supplier Name | Historic Awards | Attributable Value | Avg. Price Discount |
|---|---|---|---|
| Edenstone | 1 win | £6,396,075 | No published budget |
| Sentinel Fire and Security Solutions Limited | 1 win | £1,688,517 | -0.7% below budget |
| Redbridge & Sons Ltd | 1 win | £855,180 | No published budget |
| CLC Contractors Limited | 1 win | £752,231 | No published budget |
| J. Harper and Sons (Leominster) Ltd | 1 win | £104,447 | No published budget |
Sector Market Benchmark & Opportunity Radar
CPV 45 · UK Sector Analysis
Observed CPV-sector evidence
Prepared 7 Sept 2026, 13:29 BST
Observed CPV-sector evidence where it exists, with clearly labelled UK all-sector context for sparse fields; this is market context, not a bid forecast.
Median Winning Discount
0.63%
Typical Bids Received
4reported bids
Decision Velocity
139 days
Notice Stability
6 updates
Top Contenders in this Sector (CPV 45)
Supplier | Awards won | Total awarded value | Avg. winning discount |
|---|---|---|---|
MJ Church (Plant) LtdCRN: 1856955 | 4 contracts | £21,191,000,000 | At ceiling / not disclosed |
MORGAN SINDALL CONSTRUCTION & INFRASTRUCTURE LTDCRN: Morgan Sindall Construction Ltd | 103 contracts | £15,239,793,340 | At ceiling / not disclosed |
ILIOSCRN: 1157281 | 1 contract | £10,000,000,000 | At ceiling / not disclosed |
Wates Construction LimitedCRN: PHQT-5476-TZBR | 50 contracts | £9,923,245,228 | -0% below budget |
EQUANS Regeneration LimitedCRN: PDWQ-6852-QYVW | 141 contracts | £8,388,365,822 | At ceiling / not disclosed |
Mclaren Construction LimitedCRN: PDDX-6189-DNXD | 16 contracts | £8,050,000,000 | At ceiling / not disclosed |
JOHN GRAHAM CONSTRUCTION LIMITEDCRN: NI003503 | 41 contracts | £7,886,911,783 | At ceiling / not disclosed |
Bouygues UKCRN: 03460378 | 5 contracts | £7,750,000,000 | At ceiling / not disclosed |
Kier ConstructionCRN: PYYQ-3271-CYND | 73 contracts | £7,595,703,176 | At ceiling / not disclosed |
Skanska Construction UK LimitedCRN: 04101344 | 14 contracts | £7,455,224,403 | -0% below budget |
Comparable Published Opportunities & Re-tender Precedents
Historic records ranked from matching published evidence. They serve as research precedents for contract scoping, specifications, and previous awardees.
No sufficiently evidenced comparable record has been calculated yet.Method: tender-intelligence-v1. Empirical OCDS facts and cross-sector percentiles; missing fields remain unrecorded.
Procedure terms & legal framework
| Procedure method | Standard public procedure | Legal basis | Standard UK Procurement Rules | Procurement category | Services |
|---|---|---|---|---|---|
| Notice status | complete | Procurement threshold | Sub-threshold | Regulatory regime | Standard commercial regime |
| Commercial structure | Stand-alone contract (No framework) | Competition type | Competitive procedure | GPA WTO covered | Unspecified in notice |
| Recurring procurement | No (One-off requirement) | First published | 24 Jun 2026, 15:19 BST | Last source update | 24 Jun 2026, 15:19 BST |
| Classification (CPV) | Unspecified in notice | ||||
| Delivery area | Location not published | ||||
| Official Registry OCID | ocds-h6vhtk-05f8eb | ||||
Timeline
- Procedure published
24 Jun 2026, 15:19 BST - Submission deadline
2 Feb 2026, 12:00 GMT - Award pending
22 Jun 2026, 00:00 BST · £31,000,000 - Standstill period concludes
3 Jul 2026, 23:59 BST (PCR 2015 10-day moratorium) - Award pending
22 Jun 2026, 00:00 BST · £11,000,000 - Standstill period concludes
3 Jul 2026, 23:59 BST (PCR 2015 10-day moratorium) - Award pending
22 Jun 2026, 00:00 BST · £11,000,000 - Standstill period concludes
3 Jul 2026, 23:59 BST (PCR 2015 10-day moratorium) - Award pending
22 Jun 2026, 00:00 BST · £17,000,000 - Standstill period concludes
3 Jul 2026, 23:59 BST (PCR 2015 10-day moratorium)
Commercial outcome and contract awards
Awards (4) Wates Property Services Limited £31,000,000 · 22 Jun 2026, 00:00 BST · pending Standstill concludes: 3 Jul 2026, 23:59 BST(PCR 2015 10-day moratorium before contract signing) Assessment summaries issued: 24 Jun 2026, 00:00 BST EQUANS Regeneration Limited £11,000,000 · 22 Jun 2026, 00:00 BST · pending Standstill concludes: 3 Jul 2026, 23:59 BST(PCR 2015 10-day moratorium before contract signing) Assessment summaries issued: 24 Jun 2026, 00:00 BST Sureserve Energy Services UK Ltd £11,000,000 · 22 Jun 2026, 00:00 BST · pending Standstill concludes: 3 Jul 2026, 23:59 BST(PCR 2015 10-day moratorium before contract signing) Assessment summaries issued: 24 Jun 2026, 00:00 BST Wates Property Services Limited £17,000,000 · 22 Jun 2026, 00:00 BST · pending Standstill concludes: 3 Jul 2026, 23:59 BST(PCR 2015 10-day moratorium before contract signing) Assessment summaries issued: 24 Jun 2026, 00:00 BST |
Contracts (0)No contract published |
Bid statistics bids: 15 (lot 1) finalStageBids: 1 (lot 1) smeFinalStageBids: 0 (lot 1) vcseFinalStageBids: 0 (lot 1) bids: 12 (lot 2) finalStageBids: 1 (lot 2) smeFinalStageBids: 0 (lot 2) vcseFinalStageBids: 0 (lot 2) bids: 9 (lot 3) finalStageBids: 1 (lot 3) smeFinalStageBids: 0 (lot 3) vcseFinalStageBids: 0 (lot 3) bids: 15 (lot 4) finalStageBids: 1 (lot 4) smeFinalStageBids: 0 (lot 4) vcseFinalStageBids: 0 (lot 4) |
Bidding dynamics & price outcome Total bids received: 15 (0 from SMEs) |
Notice history
From official release and amendment events
- tender value changed
24 Jun 2026, 15:19 BST - Status changed to complete
24 Jun 2026, 15:19 BST - Official notice release published
24 Jun 2026, 15:19 BST - Submission deadline changed to published date
24 Jun 2026, 15:19 BST - tender value changed
18 Dec 2025, 12:05 GMT - Status changed to active
18 Dec 2025, 12:05 GMT - Official notice release published
18 Dec 2025, 12:05 GMT - Submission deadline changed to 2 Feb 2026, 12:00 GMT
18 Dec 2025, 12:05 GMT - Buyer information updated
18 Dec 2025, 12:05 GMT
Buyer and organisations in this procedure
Stonewater Ltd
Contracting authority
Award and contract changes
Official Documents & Specifications (0)
Official links; attachments are not copied
No linked documents are published