The Project
College Close is a 1980s four-bedroom bungalow that underwent a complete whole-house deep retrofit, delivered to AECB CarbonLite standards. The homeowner’s ambition was clear: transform a cold, inefficient property into a comfortable, low-energy home suitable for long-term retirement living.
My Home Retrofit provided a full end-to-end service covering design, project management, compliance, and installation across multiple disciplines including, Heat pumps, Solar PV and battery storage, Airtightness works and Joinery, plastering, and internal finishes
This project demonstrates our ability to deliver the full PAS2035 suite of roles while also operating at a level required for high-performance fabric retrofits such as AECB CarbonLite and Passivhaus-aligned projects.
Project Snapshot
£300K
Project Value
£183k
Value Added
£7.5K
Grants
£2,600
Energy Saving
6 tCO2e
Carbon Saving
40 years
Payback Period
A
New EPC Rating
AECB
Certification
Air Source Heat Pump
The client chose an air source heat pump (ASHP) to improve home comfort and efficiency as part of this deep retrofit. The ASHP extracts warmth from the outside air, even in colder weather, to heat the house and provide hot water, reducing reliance on traditional heating systems.
For a single occupant, this high-efficiency system helps lower heating costs and offers stability and comfort. Integrated with underfloor heating, the heat pump enables low-flow, even heating throughout the house in a low-maintenance, eco-friendly way.
Full Re-Insulation
This homeowner added cavity wall and loft insulation to enhance her bungalow’s energy efficiency. The insulation helps to trap heat inside, preventing warmth from escaping through the walls and roof, even during colder months. This upgrade has significantly reduced her heating bills while maintaining a comfortable indoor temperature. Cavity wall and loft insulation are both low-maintenance and eco-friendly, reducing her carbon footprint and improving her home’s overall energy performance
Windows
All windows were replaced with triple-glazed units using PassivHaus-certified thermal frames. The new glazing:
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Minimises heat loss and reduces drafts
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Improves acoustic insulation
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Reduces heating demand (and therefore bills)
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Enhances comfort and increases overall property value
An insulated composite front door with triple glazing was also installed to complement the window upgrade and airtightness strategy
Battery Storage
As part of the deep retrofit, a battery storage system was installed to complement the solar PV array. The battery allows excess daytime solar generation to be stored and used later, reducing reliance on the grid, lowering electricity bills, and improving energy self-sufficiency.
This helps stabilise the home’s energy usage, supports low-carbon operation, and contributes to long-term sustainability.
College Close,
“"My Home Retrofit transformed my house into a warm, energy-efficient home. The team was professional, used quality materials, and kept me informed throughout. My energy bills are lower, and my home is much warmer!"””
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