Official UK procurement notice
Preliminary Market Engagement for Thermal Improvement Works
Authority: Trivallis (Public body)
What is being bought
Published requirement descriptionTrivallis will be undertaking Preliminary Market Engagement (PME) for forthcoming Thermal Improvement and Whole-House Retrofit Works. The PME event will take place on 6 May 2026, from 1:00pm to 4:00pm, at:
The Muni Arts Centre, Gelliwastad Road, Pontypridd, CF37 2DP.
Attendance is limited to two representatives per company. Suppliers must already hold PAS 2030 accreditation, or be on track to complete accreditation (or an industry recognised equivalent) by 30 June 2026.
To confirm attendance, please email [email protected] by 12:00pm on Friday 24 April 2026, including the names and email addresses of all attendees. Please note that entry will not be permitted without advance confirmation.
During the session, Trivallis will present information to contractors interested in bidding for future procurement opportunities. A market questionnaire will also be issued to gather feedback to help shape:
- The development of our requirements and procurement approach
- The design of the procurement procedure, participation conditions and award criteria
- Preparation of tender documents and specifications
- Identification of capable contractors
- Development of contractual terms
- Capacity building within the contractor market
The deadline for returning the completed questionnaire is 12:00pm on Friday 22 May 2026.
The future programme is expected to include a range of whole house retrofit measures, delivered in line with Standard Assessment Procedure (SAP) methodology and PAS 2035 principles. Works may include, but are not limited to, the following:
Fabric Improvement Works
- Wall insulation (cavity, external and internal)
- Loft, roof and roofing thermal improvements
- Draught proofing and other SAP eligible fabric upgrades
- External dash/render
Low Carbon and Energy Efficiency Installations
- Air Source Heat Pumps (ASHPs)
- Hot water system efficiency improvements (cylinders, pipework, controls)
- Solar PV (including removal and reinstatement) and battery storage
Ventilation, Lighting and Environmental Improvements
- Ventilation upgrades and passive ventilation
- Energy efficient lighting
- Environmental/performance monitoring sensors
Supporting works necessary to enable delivery of retrofit measures, such as:
- Rainwater goods replacement
- External envelope repairs
- Cavity extractions and damp related works (including DPC cleaning)
- Building works, access and reinstatement, including canopy renewals & concrete lintels
- Roofing renewals
- Gas/electric meter boxes
- Western Power-related works
- Stitching and wall ties
The scope may also include PAS 2035 roles and deliverables, such as:
- Retrofit Assessment
- Retrofit Coordination and compliance services
- Design and specification development
Trivallis may procure PAS services and installation works separately.
All potential works will be delivered to residential properties owned by Trivallis across the South Wales region.
CPV: Doors · Installation of doors and windows · Installation of doors and windows and related components · Insulation work · Roof · Roof insulation work · Thermal insulation work
How this framework works
From the published notice- Framework period
- 4 yrs · up to 6 yrs from 1 Jul 2026
The lotProcurement structure
single lot · no lot value publishedWhat it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
- “Preliminary Market Engagement for Thermal Improvement Works” is a framework: the contest is a place on its panel, not a single contract.
Pipeline intelligence · planning stage: how this market runs before the tender is published
How Trivallis buys Joinery and carpentry installation work (CPV 4542), and who usually turns up
Trivallis’s own published record, next to the published market for the same work. This notice is a framework or DPS, so only frameworks and DPS are compared. Whole-market view: Joinery and carpentry installation work (CPV 4542) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
i
How often small and medium firms win.
Share of awards where the winner’s size is known.
The counts under this question show how many awards have a known supplier size.
No supplier sizes published for this authority.
i
How often local firms win similar work.
Winners with a registered address in the delivery region, out of awards with a known address.
Here, local means the winner is registered in the region where that contract was delivered.
A local branch does not count if the registered address is elsewhere.
No winner locations published for this authority. Local means a registered address in Wales (Cymru).
i
How long buyers here take to decide after bids close.
Middle value in days from the deadline to the first award notice, on competitions that published both dates.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards were announced within 47 days of the bid deadline.
i
How often work is awarded with no recorded rival.
Direct awards and tenders where every published lot count shows one bid.
Thin markets produce this too; it is not proof of a tailored specification.
No awards recorded for this authority in this market.
How many bids did past lots attract?
i
How many bids past lots received.
Each colour is a bid-count range. Only competed lots with a published count are included.
Past bids do not predict this tender.
1 bid0%
2–310%
4–620%
7+70%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Each colour shows awards below, close to or above the published estimate, one lot at a time.
On a framework or DPS, prices are agreed when work is called off.
Past prices are a guide, not a bid price.
Not comparable on a framework or DPS. The notice sets up a supplier panel and a ceiling value; what the work actually costs is agreed later, on each call-off or mini-competition, and those publish as contract notices of their own. The award-vs-estimate record of this market therefore sits on the call-offs; this page shows it on the contracts, not on the panel that frames them.
Assess each lot i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list
Lot #1CPV 4542Published estimate£30m
i
How many bids this lot may attract.
The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.
Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 10 past lots.
A forecast, not a list of bidders.
1 bid0%
2–310%
4–620%
7+70%
i
Where the award price may land.
The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.
No comparable awards for this lot yet.
A statistical guide from past awards, not a price to bid.
Who has supplied this buyer on similar work? i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
No earlier contract of this buyer matches this lot on the published record.
Who could compete for this lot? i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
- Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.
Procedure terms & legal framework
From the official record- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Works
- Notice status
- Planned procurement
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Standard
- Commercial structure
- Framework agreement
- Who may use this agreement
- Not stated in the notice; call-off rights may be limited to the establishing authority
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 10 Apr 2026, 15:33 BST
- Last source update
- 10 Apr 2026, 15:33 BST
- FTS notice number
2026/S 000-032920- Latest notice
- Preliminary market engagement notice (UK2)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-068038Find a Tender
How it was run
Official notice- Appointment period ends
- —
Timeline
10 Apr 2026 → 1 Jul 2026 · 4 dates- Planning notice published195 days ago10 Apr 2026, 15:33 BST
- Market engagement181 days ago24 Apr 2026, 23:59 BST
Deadline for confirming attendance to the PME event is 12pm on 24/04/2026. Deadline for completing the questionnaire is 12pm on 22/05/2026.
- Tender notice expected146 days ago29 May 2026, 23:59 BST
- Contract starts114 days ago1 Jul 2026, 00:00 BST
Notice history
1 event · 1 release on Find a Tender- Preliminary market engagement notice published10 Apr 2026, 15:33 BSTUK2
Commercial outcome & contract awards
Pipeline notice- Awards (0)
- No award published
- Contracts (0)
- No contract published
- Bid statistics
- No aggregate bid statistics published
Contracting authority & participating public bodies
Official documents & specifications (1)
Official links; attachments are not copiedNotices published for this procedure
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender