Oakhill Passivhaus : Project images
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Energy and fuel use
Measured data from renewable generation is not yet available.
Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | - | - | - |
|---|---|---|---|
| Natural gas use | - | - | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | - | - |
|---|---|---|---|
| Annual CO₂ emissions | - | - | - |
| Annual space heat demand | - | 14.6 kWh/m².yr | - |
Renewable energy
| Electricity generation | Forecast | Measured |
|---|---|---|
| Renewables Technology | - | - |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | - | - |
| Annual CO₂ emissions offset by renewable generation | - | - |
Calculation and targets
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | - |
| Energy target | PassivHaus |
| Other energy targets | - |
| Forecast heating load | 11 W/m² demand |
Airtightness
| Date | Result | |
| Pre-development air permeability test | - | - |
|---|---|---|
| Final air permeability test | 27 May 2021 | 0.22m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | 01 August 2020 |
| Occupation date | 01 August 2021 |
| Location | Oakhill, Mayfield East Sussex England |
| Build type | New build |
| Building sector | Private Residential |
| Property type | Detached |
| Construction type | Softwood frame |
| Other construction type | |
| Party wall construction | |
| Floor area | 207 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  Passivhaus certified building |
Project Team
| Organisation | MBC timber frame |
|---|---|
| Project lead person | |
| Landlord or Client | |
| Architect | Koru Architects |
| Mechanical & electrical consultant | Enhabit |
| Energy consultant | Jim Miller Design Ltd |
| Structural engineer | |
| Quantity surveyor | |
| Consultant | Etude |
| Contractor | Object Assemble |
Design strategies
| Planned occupancy | 2 |
|---|---|
| Space heating strategy | ASHP with under floor heating and towel rails |
| Water heating strategy | ASHP provides DHW |
| Fuel strategy | Mains electricity |
| Renewable energy strategy | 33No BiPVCo Flextron 2609mm x 358mm panels bonded to the zinc roof |
| Passive Solar strategy | |
| Space cooling strategy | External louvres for secure night time ventilation |
| Daylighting strategy | |
| Ventilation strategy | MVHR |
| Airtightness strategy | Taped specialist airtight board |
| Strategy for minimising thermal bridges | Majority of TBs modelled in Therm |
| Modelling strategy | PHPP |
| Insulation strategy | |
| Other relevant retrofit strategies | |
| Contextual information |
Building services
| Occupancy | 2 |
|---|---|
| Space heating | ASHP |
| Hot water | ASHP |
| Ventilation | MVHR |
| Controls | |
| Cooking | |
| Lighting | |
| Appliances | |
| Renewable energy generation system | PV |
| Strategy for minimising thermal bridges |
Building construction
| Storeys | 2 |
|---|---|
| Volume | - |
| Thermal fabric area | - |
| Roof description | |
| Roof U-value | - |
| Walls description | |
| Walls U-value | - |
| Party walls description | |
| Party walls U-value | - |
| Floor description | |
| Floor U-value | - |
| Glazed doors description | |
| Glazed doors U-value | - - |
| Opaque doors description | |
| Opaque doors U-value | - - |
| Windows description | |
| Windows U-value | - - |
| Windows energy transmittance (G-value) | - |
| Windows light transmittance | - |
| Rooflights description | |
| Rooflights light transmittance | - |
| Rooflights U-value | - |