Retrofit & Decarbonisation Support
Full Retrofit Feasibility & Technical Partnership Services
At Focus 360 Energy, we provide integrated residential and commercial retrofit feasibility, decarbonisation support, and technical partnership services.
Our consultancy unites PAS 2035 / ECO4 compliance, EPC uplift modelling, CapEx–OpEx analysis, and whole-life carbon studies to deliver clear, data-driven pathways toward Net Zero and regulatory compliance.
Whether you’re a developer, landlord, or facilities manager, we help translate complex retrofit data into measurable actions, payback certainty, and operational savings, ensuring every upgrade decision is technically sound, cost-justified, and regulation-ready.
Residential Retrofit & Decarbonising (SAP-based)
What We Offer:
- Retrofit Feasibility Reports: Whole-building assessments using SAP, identifying insulation gaps, thermal bridges, overheating risks, ventilation needs, and EPC uplift potential.
- PAS 2035-Compliant Retrofit Design: A fabric-first approach: improving airtightness and insulation before transitioning to low-carbon heating.
- ECO4 Modelling & Grant Readiness: Identify grant-eligible improvements and funding incentives for achieving EPC C or better.
- Lifecycle & Payback Analysis: We provide simple payback, CapEx, and OpEx comparisons for measures such as heat pumps, insulation, and glazing upgrades.
- Cost-of-Carbon Savings: Quantify avoided CO₂ emissions, long-term financial benefit, and lifecycle carbon performance.
- Retrofit Coordinator Support: Feasibility assessments, strategy documentation, compliance reporting, and post-project verification in full alignment with PAS 2035.
Why It Matters:
- Enables access to ECO4 and other funding schemes.
- Empowers landlords and homeowners with robust data for ROI and compliance decisions.
- Prevents costly missteps in deep retrofit delivery through early technical clarity.
Commercial Retrofit & Decarbonising (SBEM-based)
What We Offer:
- SBEM-Based Retrofit Feasibility Studies: Analyse existing energy performance, define retrofit priorities, and model EPC improvement options.
- Measure-Level EPC Uplift Forecasting: Identify each improvement’s estimated EPC impact, interdependencies, and practical viability.
- Economic Appraisal (CapEx / OpEx / Payback): Provide budgetary cost ranges, indicative operational savings, and simple payback calculations to support investment cases.
- Programme & Disruption Planning: Assess lead times, site access, and downtime implications for operational premises such as restaurants or offices.
- Compliance & Building Regulations Review: Highlight potential triggers under Building Regulations Part L or planning policy, ensuring projects progress without compliance delays.
- Systems & Controls Optimisation: Identify low-cost opportunities such as lighting control upgrades, HVAC optimisation, or air-tightness improvements to boost EPC bands efficiently.
- Technical Partnerships for Estate Managers: Ongoing consultancy for developers and operators, providing modelling iterations, re-certification support, and post-works verification.
Why It Matters:
- Demonstrates ROI and business case for low-carbon measures.
- Supports compliance with Building Regulations, MEES, and corporate sustainability frameworks.
- Maximises asset value and operational efficiency through measurable carbon and energy reductions.
Our Process Flow
1. Initial Retrofit Feasibility
Feasibility testing via SAP (domestic) or SBEM (non-domestic), with PAS 2035 / ECO4 modelling for retrofit pathways.
2. Retrofit Strategy & Modelling
Identify fabric, HVAC, and renewables combinations for optimal EPC improvements and carbon-cost payback profiles.
3. Technical Design Support
In-depth retrofit strategy and compliance report, including PAS 2035-compatible risk route studies and coordinator liaison.
4. Implementation Support
Support through procurement, installation, and handover, including energy monitoring advice and commissioning.
5. Performance Verification
Report outcomes, provide cost-of-carbon savings reports, and lessons for future improvement feedback, closing the PAS 2035 loop.
Why Focus 360 Energy Is Your Ideal Partner
Certification and Accreditation
We are a member of Elmhurst Energy, ECMK, and IES, which guarantee quality energy consultancy backed by recognised trade schemes.
Proven Track Record
- Residential: Ecological retrofit and SAP assessment for The Round House, Norfolk
- Residential: Tremayne House, Cornwall: SAP modelling and EPC upgrade while preserving heritage
- Commercial: EPC upgrade and low-carbon retrofit at St Catherine’s Court, Bristol
Whole-Lifecycle Perspective
Our Whole Lifecycle Carbon Assessment service helps clients understand both construction and operational carbon footprints and the savings to be unlocked.
Compliance-Ready
You gain a partner who understands not just the data but how to translate it into compliance with PAS 2035, planning expectations, funding criteria, and sustainability commitments.
Summary Table
| Stakeholder | Benefits from Our Support |
|---|---|
| Retrofit Coordinators | Full PAS 2035-compliant feasibility studies, modelling, documentation, and performance insights |
| Developers & Landlords | Clear ROI on low-carbon measures, EPC improvements, payback periods, and green asset value |
| Both Residential and Commercial Clients | Tailored retrofit strategies, PAS 2035 / ECO4 alignment, robust data-led decisions, carbon-cost transparency |
Next Steps
Ready to explore how retrofit can deliver both compliance and carbon savings? Contact us to book a Retrofit Feasibility Assessment, and let Focus 360 Energy help decarbonise your property with clarity, precision, and confidence.
Frequently Asked Questions
What’s the difference between a Retrofit Feasibility Study and a Standard EPC?
An EPC provides a compliance snapshot of your building’s current energy efficiency, whereas a Retrofit Feasibility Study models how to improve that rating. It identifies measure-level upgrades (fabric, HVAC, renewables), models EPC uplift potential, and includes cost, payback, and carbon impact data, going far beyond what a standard EPC offers.
What types of buildings do you cover?
We deliver retrofit and decarbonisation services across both domestic (SAP-based) and Commercial (SBEM-based) sectors. This includes homes, offices, retail, hospitality, education, and mixed-use developments.
How do you calculate CapEx, OpEx, and payback for retrofit measures?
We use benchmark cost data, manufacturer performance data, and project-specific modelling to estimate:
- CapEx (Capital Expenditure): upfront cost to install each measure.
- OpEx (Operational Expenditure): running costs and potential savings.
- Payback Period: the time required for energy and carbon savings to offset the investment.
This economic appraisal helps clients prioritise high-impact, short-payback measures.
Do you assess disruption or programme impact for operational buildings?
Yes. Our feasibility reports include programme and disruption notes, outlining likely lead times, access needs, and operational downtime. This is especially useful for restaurants, offices, and retail sites that need to stay open during working hours.
Will the retrofit trigger Building Regulations or planning requirements?
Sometimes. We flag any Building Regulations Part L or planning triggers (e.g., façade or HVAC alterations) within our reports. Where relevant, we provide early guidance so compliance can be integrated into your project schedule.
How does Focus 360 Energy integrate PAS 2035 compliance?
All residential retrofit projects are designed around PAS 2035 methodology, covering assessment, design, installation, and verification stages. For commercial buildings, we apply the same principles to ensure a whole-building decarbonisation approach with consistent quality assurance.
What information do you need before starting a feasibility or decarbonisation assessment?
Typically:
- The most recent EPC certificate (if available).
- Floor plans, M&E drawings, or specification data.
- Utility consumption data (electricity, gas).
Details of recent or planned upgrades.
Providing these early allows us to create accurate energy models and produce realistic payback and carbon-saving forecasts.
How do you estimate the EPC improvement (C to B, etc.)?
We model each proposed measure using SAP or SBEM software, quantifying its EPC score impact (SAP points or SBEM percentage). This gives clients visibility on how each action contributes to the target band (e.g., C → B or B → A).
What are “fabric-first” and “whole-building” approaches?
A fabric-first approach focuses on insulation, airtightness, and ventilation before upgrading systems like heating or renewables.
A whole-building approach integrates fabric, systems, and controls to maximise energy savings and EPC improvement, essential for deep retrofit or decarbonisation projects.
What happens after retrofit works are complete?
We can:
- Remodel the building to verify performance.
- Re-issue the EPC post-works.
Provide a Performance Verification Report, showing energy, carbon, and cost savings achieved.
This closes the loop and supports future funding or compliance submissions.
How soon can a survey or feasibility visit take place?
Availability depends on project size and location, but we typically schedule site visits within 1–3 weeks. For commercial premises, we coordinate directly with managers to minimise disruption to operations.
Do you provide ongoing monitoring or energy performance tracking?
Yes, for larger portfolios or commercial clients, we offer ongoing performance monitoring and energy tracking, ensuring that savings forecasted in feasibility reports are achieved in real operation.
