The OSMO Framework: An 11-Step Roadmap to Net Zero
We don't guess. We model. Drawing on 15 years of experience, from 'Constraint Analysis' to 'Whole Life Carbon', we use a proven physics-based approach to find the sweet spot between preservation and performance across all building types.
The OSMO framework uses advanced physics modeling and constraint analysis to find the "Sweet Spot" for your building.
Brief Refinement
We 'De-cost' your project by questioning unnecessary extensions, saving your budget for high-performance upgrades.
Baseline Assessment
Comprehensive analysis of your building's current state, including energy performance and heritage significance.
Constraint Analysis
We map your home's 'Significant Features' so you know exactly where you can insulate safely and where you must tread lightly.
Moisture Assessment
Critical analysis to prevent interstitial condensation and structural decay in breathable wall systems.
Voidage Analysis
Understanding air gaps and void spaces to ensure proper ventilation and moisture management.
Whole Life Carbon Calculation
Comprehensive carbon accounting including embodied carbon (A1-A5) and operational emissions.
Planetary Boundaries Check
Ensuring your retrofit doesn't exceed safe operating spaces for climate and resource use.
Opportunity Zone Mapping
Identifying areas where interventions can maximize performance without compromising heritage value.
Optioneering
We run thousands of scenarios—from 'Warming Climates' to 'Heat Pump Integration'—to prove exactly which upgrades will pay you back.
Practical Scenario Development
Creating realistic retrofit pathways that balance ambition with practical constraints.
Implementation Roadmap
Final step-by-step plan with phasing, costs, and expected outcomes for your heritage retrofit journey.
The Three Pillars of OSMO
Conservation
Protecting the historic fabric and character of your building while enabling necessary improvements.
Carbon
True whole-life carbon accounting that includes embodied emissions, not just operational savings.
Cost
Maximizing return on investment through intelligent de-costing and strategic upgrade sequencing.
Energy Cost Breakdown: Before vs After Retrofit
A Transparent Financial Roadmap: Our analysis details your potential long-term savings in energy and maintenance. Crucially, we always integrate the specific upfront Capital Cost of the retrofit measures to calculate your realistic Return on Investment (ROI) period.
Before Retrofit
After OSMO Retrofit
Data Sources
- Energy Consumption: BEIS (2023). Average UK household: 2,900 kWh electricity, 12,000 kWh gas annually.Source
- Retrofit Performance: Based on Hamilton Square case study achieving 90% heating demand reduction.
- PV Generation: Typical 4kW solar PV system generates ~3,500 kWh/year in UK, offsetting energy costs.