Transforming stranded assets
into net zero workplaces.
A practical, commercially funded pathway to decarbonise legacy commercial buildings — combining asset intelligence, occupier alignment, and in-house delivery capability.
The stranded asset problem is accelerating.
Across the North West, thousands of commercial buildings face a critical inflection point. Tightening EPC legislation, rising energy costs, and occupier ESG commitments are converging to render poorly performing assets functionally obsolete — stranded in value terms long before the end of their physical life.
The barrier is rarely technical. It is financial and operational. Landlords lack the capital structure, occupier relationships, and delivery infrastructure to execute meaningful retrofit programmes. The opportunity sits untouched — until now.
Three capabilities. One integrated solution.
What distinguishes Mantle is the combination of deep asset and occupier understanding, the ability to commercialise the proposition so that the capex funds itself, and an operational team that can assess and deliver the works end-to-end.
Asset & Occupier Intelligence
We understand the building and the business inside it. Our asset management platform gives us live data on energy consumption, lease structures, and occupier ESG obligations — enabling us to design interventions that work for both sides of the relationship.
Commercialising the Capex
The retrofit is structured so that energy savings fund the capital investment. Through green finance instruments, energy service agreements, and enhanced lease terms, the programme is self-liquidating — no landlord capex required, and occupier costs reduce from day one.
Operational Delivery
Our in-house Partners division — with its FM, PPM, and project delivery capability — assesses, procures, and delivers the works. No third-party programme manager. No value leakage. Accountability sits with Mantle from feasibility to practical completion.
Fluent Money HQ
30,000 sq ft · Horwich, Bolton · 300-strong team
A heritage building. A modern energy challenge.
Fluent Money's 30,000 sq ft headquarters — a converted Victorian railway building in Horwich — is home to a 300-strong team and a landmark occupier within Mantle's commercial portfolio. The building's character is exceptional. Its energy performance was not.
An ageing gas-fired heating and cooling system, high energy consumption, and an EPC trajectory that would have rendered the building unlettable under forthcoming legislation. The occupier faced rising energy costs. The landlord faced a stranded asset.
Mantle's response was to treat this not as a cost problem, but as a value creation opportunity — structuring a programme that would transform the energy profile of the building, improve the working environment for Fluent Money's team, and fund the capital investment through the energy savings it generates.
From assessment to practical completion.
Asset & Occupier Assessment
Energy audit, EPC analysis, occupier lease review, and consumption benchmarking. We establish the baseline and identify the intervention that delivers the greatest impact per pound of capital deployed.
Commercial Structuring
We model the energy savings, green finance options, and lease mechanisms to create a self-funding programme. The occupier benefits from day one; the landlord protects and enhances asset value without writing a cheque.
Technical Design & Specification
In-house engineering assessment and BIM modelling of the proposed works — HVAC replacement, solar PV sizing, building fabric improvements, and smart controls integration. Full specification produced before contractor engagement.
Procurement & Delivery
Our Partners division manages the full procurement process and acts as principal contractor. Works are phased to minimise occupier disruption. We remain accountable for programme, cost, and quality throughout.
Commissioning & Monitoring
Post-completion energy monitoring confirms the performance of the installed systems against the modelled savings. Ongoing FM integration ensures the building continues to perform at its new standard.
Reporting & Compliance
EPC uplift certification, MEES compliance documentation, and ESG reporting for both landlord and occupier. The asset is repositioned — commercially, legally, and reputationally.
Value created across the full stakeholder stack.
For the Landlord
- EPC compliance — MEES-ready asset
- Protected and enhanced capital value
- Strengthened occupier relationship
- Zero capex requirement
For the Occupier
- Reduced energy costs from day one
- Improved thermal comfort for staff
- ESG reporting credentials
- Retained in a high-quality, compliant space
For the Asset
- Removal from stranded asset risk
- Modern M&E infrastructure
- Solar-powered heating and cooling
- Long-term operational resilience
Is your asset at risk of stranding?
If you own or manage commercial property in the North West and are concerned about EPC compliance, rising energy costs, or occupier retention, speak to Mantle. We will assess the opportunity, model the commercial structure, and tell you whether we can make it work — at no cost to you.