PfH Decarbonisation, Retrofit and Planned Works Framework for Wales

The Protocol for Housing Wales is issuing a Wales‑specific decarbonisation, retrofit and planned works framework agreement designed to support its social‑housing members in advancing net‑zero targets and improving energy performance across domestic and commercial portfolios. The framework is divided into twelve lots that cover a comprehensive range of interventions, from solar PV installation, building‑fabric insulation and air‑source heat pumps, to full‑house refurbishment, kitchen and bathroom renewal, roofing, windows and doors, and integrated whole‑property programmes. In each case suppliers will provide end‑to‑end, turnkey services that include surveying, design, supply, installation, commissioning, testing, optimisation, handover and ongoing support, ensuring project delivery in line with modern sustainability and safety expectations.

Suppliers appointed to any lot must act as principal contractors under the Construction (Design and Management) Regulations where appropriate, conduct surveys and assessments in accordance with current installation standards, and deliver work that meets or exceeds the performance, safety and thermal performance criteria set out in the UK building regulations, WHQS 2023, and relevant industry standards. All works must comply with current UK building regulations, CDM Rules, and WHQS 2023 standards.

PfH Cymru (Procurement for Housing Wales) wishes to establish a Wales-specific Decarbonisation, Retrofit and Planned Works Framework Agreement.
Established in 2004, Procurement for Housing (PfH) is a national procurement consortium dedicated to the social housing sector and supported by the National Housing Federation (NHF), Chartered Institute of Housing (CIH) and HouseMark. Collectively our Members manage more than 90% of the UK's social housing stock, with PfH helping them to achieve efficiency savings using a wide range of services including framework agreements, dynamic purchasing systems, spend analyses, strategy reviews, consolidated billing and comprehensive reporting. PfH is a contracting authority under section 2 of the Procurement Act 2023 and a centralised procurement authority under section 1(4) of that Act.
Please refer to www.pfh.co.uk for additional information.
The Framework will be divided into eight lots:
Lot 1 - Decarb and Retrofit - Solar
Lot 2 - Decarb and Retrofit - Insulation
Lot 3 - Decarb and Retrofit - Air Source Heat Pumps
Lot 4 - Decarb and Retrofit - Full Retrofit Works - Value Band 1
Lot 5 - Decarb and Retrofit - Full Retrofit Works - Value Band 2
Lot 6 - Planned Works - Kitchens and Bathrooms - Value Band 1
Lot 7 - Planned Works - Kitchens and Bathrooms - Value Band 2
Lot 8 - Planned Works - Roofing - Value Band 1
Lot 9 - Planned Works - Roofing - Value Band 2
Lot 10 - Planned Works - Windows and Doors
Lot 11 - Planned Works - Whole Property Planned Works - Value Band 1
Lot 12 - Planned Works - Whole Property Planned Works - Value Band 2
The framework will be split into two regions , the details of which are set out in the procurement documentation. Suppliers will be able to apply for both regions but for only one of the value bands per lot pair i.e. one of lot 4 and 5, one of lot 6 and 7, one of lot 8 and 9 and one of lot 11 and 12.
The number of suppliers we anticipate allocating to each lot and region are set out in the procurement documentation (see Document 1). PfH reserves the right to award places on the framework to a greater or fewer number of suppliers, depending on the bids received.

Contract location: UKL
Communication: www.mytenders.co.uk
Languages in which tenders or requests to participate may be submitted: En
Enquiry deadline: 2026-07-03T17:00:00+01:00
Submission address and any special instructions: www.mytenders.co.uk
Tenders may be submitted electronically: allowed
Award decision date (estimated): 2026-09-11T23:59:59+01:00

Lot number: 1
Description: This Lot covers the survey, design, supply, installation, commissioning, testing, optimisation and handover of Solar PV technologies across domestic, commercial and public sector properties. Its purpose is to support PfH members in reducing carbon emissions, improving energy efficiency, lowering operational costs, and enabling progression towards net‑zero objectives through the deployment of high‑quality Solar PV systems. Suppliers appointed to this Lot will be expected to deliver a full turnkey service, including: •Initial surveys, energy assessments and feasibility checks. •Detailed system design, performance modelling and integration planning. •Commissioning, testing, performance verification and system optimisation. •Training, handover, user guidance and ongoing support.
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework and all lots are initially being awarded for a period of two years. The framework can be extended for a further one or two years to a maximum period of 4 years

Lot number: 2
Description: This Lot covers the survey, assessment, design, supply, installation, commissioning, testing and handover of insulation and fabric first energy efficiency measures for both domestic and commercial properties. The aim of the Lot is to support members in delivering high quality building fabric improvements that reduce heat loss, lower running costs, improve EPC ratings and contribute to decarbonisation objectives. Contractors appointed to this Lot must be competent in delivering a full range of insulation systems, including: •External Wall Insulation (EWI) •Internal Wall Insulation (IWI) •Cavity Wall Insulation (CWI) •Underfloor Insulation (UFI) •Room In Roof Insulation (RIR) •Loft and Roof Insulation (including top up) •Ventilation
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework and all lots are initially being awarded for a period of two years. The framework can be extended for a further one or two years to a maximum period of 4 years

Lot number: 3
Description: This Lot covers the survey, design, supply, installation, commissioning, testing, optimisation and handover of Air Source Heat Pumps across domestic, commercial and public sector properties. Its purpose is to support PfH members in reducing carbon emissions, improving energy efficiency, lowering operational costs, and enabling progression towards net‑zero objectives. Suppliers appointed to this Lot will be expected to deliver a full turnkey service, including: •Initial surveys, energy assessments and feasibility checks. •Detailed system design, performance modelling and integration planning. •Commissioning, testing, performance verification and system optimisation. •Training, handover, user guidance and ongoing support.
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework and all lots are initially being awarded for a period of two years. The framework can be extended for a further one or two years to a maximum period of 4 years

Lot number: 4
Description: Value Band 1 - £0 to £2000000 This Lot covers the end to end delivery of whole house retrofit works, combining a fabric first approach with a broad range of decarbonisation and energy efficiency measures for both domestic and commercial properties. The objective is to support members in delivering high quality, technically compliant retrofit programmes that reduce energy demand, lower operational costs, and contribute towards long term net zero outcomes. Suppliers appointed to this Lot will be expected to operate as a turnkey provider, delivering retrofit works directly or through competent subcontractors, and must be fully capable of acting as the Principal Contractor under CDM Regulations. Contractors will take full responsibility for project management, compliance, coordination, installation, commissioning, handover and administrative activities, ensuring a seamless delivery experience for members. Scope of Works Works under this Lot may include, but are not limited to: •Retrofit Services – Assessment, Design, Coordination etc •Fabric first improvements such as insulation (EWI, IWI, CWI, UFI, loft/roof insulation), window and door upgrades, ventilation improvements and airtightness measures. •Decarbonisation technologies, including but not limited to low carbon heating (ASHP/GSHP), Solar PV, battery storage systems, controls and heat loss reduction measures. •Electrical Heating – e.g. HHRSH •Enabling and associated works, including minor repairs, electrical upgrades, structural adjustments, and integration of multiple measures within a whole house improvement plan.
Lot value (estimated)
150.000.000,00 GBP excluding VAT
180.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of two years. The framework can be extended for two further periods of 12 months each, with a maximum period of 4 years.

Lot number: 5
Description: Value Band 2 - £0 to Unlimited This Lot covers the end to end delivery of whole house retrofit works, combining a fabric first approach with a broad range of decarbonisation and energy efficiency measures for both domestic and commercial properties. The objective is to support members in delivering high quality, technically compliant retrofit programmes that reduce energy demand, lower operational costs, and contribute towards long term net zero outcomes. Suppliers appointed to this Lot will be expected to operate as a turnkey provider, delivering retrofit works directly or through competent subcontractors, and must be fully capable of acting as the Principal Contractor under CDM Regulations. Contractors will take full responsibility for project management, compliance, coordination, installation, commissioning, handover and administrative activities, ensuring a seamless delivery experience for members. Scope of Works Works under this Lot may include, but are not limited to: •Retrofit Services – Assessment, Design, Coordination etc •Fabric first improvements such as insulation (EWI, IWI, CWI, UFI, loft/roof insulation), window and door upgrades, ventilation improvements and airtightness measures. •Decarbonisation technologies, including but not limited to low carbon heating (ASHP/GSHP), Solar PV, battery storage systems, controls and heat loss reduction measures. •Electrical Heating – e.g. HHRSH •Enabling and associated works, including minor repairs, electrical upgrades, structural adjustments, and integration of multiple measures within a whole house improvement plan.
Lot value (estimated)
150.000.000,00 GBP excluding VAT
180.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of two years. The framework can be extended for two further periods of 12 months each, with a maximum period of 4 years.

Lot number: 6
Description: Value Band 1 - £0 - £1,500,000 This Lot covers the planned replacement, renewal and installation of kitchens and bathrooms. The purpose of this Lot is to support members in delivering high quality, compliant, resident focused kitchen and bathroom programmes that improve living conditions, update key components at end of life, and maintain asset standards aligned with WHQS 2023 and wider organisational requirements. Contractors appointed to this Lot will be expected to deliver a full range of kitchen and bathroom works, including (but not limited to): Kitchen Works •Removal and disposal of existing kitchen units, worktops, appliances and finishes •Supply and installation of new kitchen units, worktops, sinks, taps and associated fittings •Wall and floor tiling, splashbacks, decorative finishes and making good •Mechanical, electrical and plumbing alterations to support layout changes •Associated works such as extract ventilation, safety upgrades and lighting •Compliance with ergonomic standards, safety requirements and customer specified component choices Bathroom Works •Removal and disposal of existing sanitaryware, fixtures and finishes •Installation of new baths, WCs, basins, showers and thermostatic controls •Adapted bathroom installations if required (e.g., level access showers) •Wall and floor tiling, waterproofing systems and decorative reinstatement •Mechanical, plumbing and electrical works
Lot value (estimated)
30.000.000,00 GBP excluding VAT
36.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for 2 further periods of 12 months each, with a maximum framework period of 4 years

Lot number: 7
Description: Value Band 2 - £0 to Unlimited This Lot covers the planned replacement, renewal and installation of kitchens and bathrooms. The purpose of this Lot is to support members in delivering high quality, compliant, resident focused kitchen and bathroom programmes that improve living conditions, update key components at end of life, and maintain asset standards aligned with WHQS 2023 and wider organisational requirements. Contractors appointed to this Lot will be expected to deliver a full range of kitchen and bathroom works, including (but not limited to): Kitchen Works •Removal and disposal of existing kitchen units, worktops, appliances and finishes •Supply and installation of new kitchen units, worktops, sinks, taps and associated fittings •Wall and floor tiling, splashbacks, decorative finishes and making good •Mechanical, electrical and plumbing alterations to support layout changes •Associated works such as extract ventilation, safety upgrades and lighting •Compliance with ergonomic standards, safety requirements and customer specified component choices Bathroom Works •Removal and disposal of existing sanitaryware, fixtures and finishes •Installation of new baths, WCs, basins, showers and thermostatic controls •Adapted bathroom installations if required (e.g., level access showers) •Wall and floor tiling, waterproofing systems and decorative reinstatement •Mechanical, plumbing and electrical works
Lot value (estimated)
30.000.000,00 GBP excluding VAT
36.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for 2 further periods of 12 months each, with a maximum framework period of 4 years

Lot number: 8
Description: Value Band 1 - £0 - £1500000 This Lot covers the planned replacement, renewal, repair and improvement of roofing systems. It supports members in maintaining safe, weather tight, compliant and long lasting roof structures across domestic/ and commercial property portfolios. Contractors appointed to this Lot will be expected to deliver a range of planned roofing services, including (but not limited to): Roofing Works •Removal and renewal of slates, tiles, battens and underlay •Replacement of ridge tiles, hip tiles, verge finishes and associated details •Installation of roof ventilation components, insulation improvements and associated compatibility works •Repair or replacement of roof trusses, rafters or supporting timbers where required •Renewal of flat roof coverings including built up felt, liquid applied systems and single ply membranes •Upgrading insulation to meet thermal performance standards •Installation of new edge trims, flashings and upstands •Full preparation, stripping and making good of substrates •Renewal of fascias, soffits, bargeboards and roofline components •Rainwater goods replacement (gutters, downpipes, hoppers) •Chimney repairs, repointing, removal or reconstruction •Repair of leadwork, including flashings, valleys and abutments •Emergency roofing repairs as part of planned work programmes
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for up to two further periods of 12 months each, with a maximum framework term of 4 years.

Lot number: 9
Description: Value Band 2 £0 - Unlimited This Lot covers the planned replacement, renewal, repair and improvement of roofing systems. It supports members in maintaining safe, weather tight, compliant and long lasting roof structures across domestic/ and commercial property portfolios. Contractors appointed to this Lot will be expected to deliver a range of planned roofing services, including (but not limited to): Roofing Works •Removal and renewal of slates, tiles, battens and underlay •Replacement of ridge tiles, hip tiles, verge finishes and associated details •Installation of roof ventilation components, insulation improvements and associated compatibility works •Repair or replacement of roof trusses, rafters or supporting timbers where required •Renewal of flat roof coverings including built up felt, liquid applied systems and single ply membranes •Upgrading insulation to meet thermal performance standards •Installation of new edge trims, flashings and upstands •Full preparation, stripping and making good of substrates •Renewal of fascias, soffits, bargeboards and roofline components •Rainwater goods replacement (gutters, downpipes, hoppers) •Chimney repairs, repointing, removal or reconstruction •Repair of leadwork, including flashings, valleys and abutments •Emergency roofing repairs as part of planned work programmes
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for up to two further periods of 12 months each, with a maximum framework term of 4 years.

Lot number: 10
Description: This Lot covers the full lifecycle of PVC U (and other) window and door replacement — including surveying, manufacturing, supplying and installing new units. The purpose is to support members in delivering secure, energy efficient, durable, and compliant building components that improve comfort, reduce heat loss and meet WHQS requirements. Contractors appointed to this Lot will be required to deliver: •Surveys carried out in accordance with installation standards •Assessment of structural openings, tolerances, ventilation needs, and safety compliance •Production of PVC U frames meeting required performance standards such as: •Safe removal and disposal of existing windows and doors •Installation of new frames, glazing, trims, cills, finishing components and fixings •Achieving required airtightness, thermal performance, and weather tightness •Making good reveals, plaster, decoration, and surrounding fabric •Compliance checks including water resistance, wind load, and air permeability performance Provision of fire doors will be included within the lot but it will not be obligatory for suppliers to supply them.
Lot value (estimated)
25.000.000,00 GBP excluding VAT
30.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended by up to two further periods of 12 months each, up to a maximum term of 4 years.

Lot number: 11
Description: Whole Property Works - Value Band 1 £0 - £2000000 his Lot covers full property, multi trade planned works. It is designed for contractors capable of delivering a comprehensive range of internal and external works through a coordinated, integrated whole property approach. This Lot supports members looking to appoint a single supplier to manage and deliver wide ranging property improvement programmes, including but not limited to: Internal Works •Kitchen and bathroom replacements •Internal joinery, flooring, plastering, decorations •Fire doors •Rewires, lighting upgrades and electrical safety improvements •Heating replacements, boiler swaps, radiators and associated M&E work •Internal decarbonisation measures External Works •Roofing renewal, roofline components and rainwater goods •External wall repairs, repointing, brickwork and render refurbishment •Windows and doors •Replacement of windows and doors •Insulation improvements (loft, cavity, external, ventilation integration) •External decarbonisation measures
Lot value (estimated)
150.000.000,00 GBP excluding VAT
180.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for two further periods of up to 12 months each, with a maximum framework term of 4 years.

Lot number: 12
Description: Whole Property Works - Value Band 2 £0 - Unlimited This Lot covers full property, multi trade planned works. It is designed for contractors capable of delivering a comprehensive range of internal and external works through a coordinated, integrated whole property approach. This Lot supports members looking to appoint a single supplier to manage and deliver wide ranging property improvement programmes, including but not limited to: Internal Works •Kitchen and bathroom replacements •Internal joinery, flooring, plastering, decorations •Fire doors •Rewires, lighting upgrades and electrical safety improvements •Heating replacements, boiler swaps, radiators and associated M&E work •Internal decarbonisation measures External Works •Roofing renewal, roofline components and rainwater goods •External wall repairs, repointing, brickwork and render refurbishment •Windows and doors •Replacement of windows and doors •Insulation improvements (loft, cavity, external, ventilation integration) •External decarbonisation measures
Lot value (estimated)
150.000.000,00 GBP excluding VAT
180.000.000,00 GBP including VAT
This contract is subject to renewal: Yes
Description of renewals: The framework is being awarded for an initial period of 2 years. The framework may be extended for two further periods of up to 12 months each, with a maximum framework term of 4 years.

Award criteria:

Name	Type	Weighting
Quality	quality	70%
Price	price	30%