Mayfield Passivhaus
Download
as PDF A replacement dwelling on the site of a 1930s bungalow. Set within a historic Percy Crane landscape garden, this new dwelling provides 6 bedrooms over three storeys and responds to the layout of the historic garden setting, with footpaths and vistas becoming integral with the layout of the rooms and glazing.The house is a three dimensional venn diagram, with two volumes overlapping in the area of the main entrance atrium and staircase, which fall on the principal axis of the site entrance route. This mutual overlapping zone is expressed externally in a full glass roof over the entrance atrium, bringing light and winter warmth into the nucleus of the house.Internally, the layout reflects the order of priority of its users, with the kitchen and dining space taking the most prominent position off the south-facing terrace.
Mayfield Passivhaus : Project images
Click on image to preview full size
Energy and fuel use
Measured data from renewable generation is not yet available.
Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | - | 17065 kWh/yr | - |
|---|---|---|---|
| Natural gas use | - | - | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | 95 kWh/m².yr | - |
|---|---|---|---|
| Annual CO₂ emissions | - | 22 kg CO₂/m².yr | - |
| Annual space heat demand | - | 15 kWh/m².yr | 15 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 | 95 kWh/m².yr | - |
| Annual CO₂ emissions offset by renewable generation | 22 kg CO₂/m².yr | - |
Calculation and targets
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | - |
| Energy target | PassivHaus |
| Other energy targets | - |
| Forecast heating load | - |
Airtightness
| Date | Result | |
| Pre-development air permeability test | - | - |
|---|---|---|
| Final air permeability test | - | 0.5m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | |
| Occupation date | 01 September 2015 |
| Location | Mayfield East Sussex England |
| Build type | New build |
| Building sector | Private Residential |
| Property type | Detached |
| Construction type | |
| Other construction type | |
| Party wall construction | |
| Floor area | 449 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  Passivhaus certified building |
Project Team
| Organisation | |
|---|---|
| Project lead person | James Galpin, Hazle McCormack Young LLP |
| Landlord or Client | Private |
| Architect | James Galpin, Hazle McCormack Young LLP |
| Mechanical & electrical consultant | Phil Neve, Aaben Ltd |
| Energy consultant | Phil Neve, Aaben Ltd (PHPP) |
| Structural engineer | Crouch Waterfall |
| Quantity surveyor | |
| Consultant | |
| Contractor | Martin Peat, Richardson & Peat |
Design strategies
| Planned occupancy | 5-7 |
|---|---|
| Space heating strategy | |
| Water heating strategy | |
| Fuel strategy | |
| Renewable energy strategy | |
| Passive Solar strategy | |
| Space cooling strategy | |
| Daylighting strategy | |
| Ventilation strategy | |
| Airtightness strategy | |
| Strategy for minimising thermal bridges | |
| Modelling strategy | |
| Insulation strategy | |
| Other relevant retrofit strategies | |
| Contextual information |
Building services
| Occupancy | |
|---|---|
| Space heating | |
| Hot water | |
| Ventilation | |
| Controls | |
| Cooking | |
| Lighting | |
| Appliances | |
| Renewable energy generation system | |
| Strategy for minimising thermal bridges |
Building construction
| Storeys | |
|---|---|
| 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 | - |