- Building Type : Isolated or semi-detached house
- Construction Year : 2014
- Delivery year : 2015
- Address 1 - street : HP17 0XS AYELSBURY, United Kingdom
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 175 m2
- Construction/refurbishment cost : 1 200 000 €
- Cost/m2 : 6857.14 €/m2
Primary energy need :
(Calculation method : Other )
Lark Rise, the first Passivhaus Plus building in the UK, was rigurously designed and built by Bere Architecs in 2015 to test the viability of the concept ‘house as power station’ in a north European climate and to establish the potential for a cluster of similar houses to draw down energy from the National Grid.
Lark Rise is an ultra-low-energy, all-electric, contemporary and healthy certified Passivhaus Plus home. It is a detached two-storey, two-bedroom dwelling of 175m2 located on a North West facing slope on the edge of the Chiltern Hills in Buckinghamshire, England. It is partially prefabricated with heavyweight reinforced concrete retaining construction system to ground floor at garden level and prefabricated timber frame structure to first and floor at entrance level.
The main garden façade faces North West and is entirely glazed, with large windows and a terrace. Solar gains are limited because most of the glazing faces to the North West. Partially underground construction to reduce visual impact on a protected landscape area and northerly orientation certainly help to maintain stable and comfortable temperatures in Summer and Winter and help avoid summer overheating.
The house has been provided with a PV system on the roof designed to generate 12.4 kWp by means of 38 PV panels. The energy consumption and PV production data have been monitored and analysed for 1-year period between Oct-16 and Sep-17 and compared to a UK standard house and other Passivhaus projects achieving outstanding results.
Fully operational (with 13kWh battery storage), Lark Rise is expected to draw from the grid only 2% of the energy a similar sized standard UK house each year, while exporting 10 times this amount back to the grid each year.
See more details about this projecthttps://www.bere.co.uk/architecture/lark-rise/
3rd part certified
Certification companyMEAD: ENERGY &ARCHITECTURAL DESIGN Kym Mead (firstname.lastname@example.org) Passivhaus Plus Certification
Environmental consultancyEnergelio email@example.com Environmental Engineers that carried out the self-consumption analysis
Owner approach of sustainability
One is a scientist, the other a medic. Both were interested in going somewhat further than the minimum requirements of the building regulations in order to create a prototype all-electric, plus-energy, grid-connected, low carbon building that might show how buildings can provide community infrastructure benefits as well as benefits for the occupants.
Lark Rise is an ultra-low-energy, contemporaryand healthy home. It is a detached two-storey, two-bedroom dwelling of 175m2located on a North West facing slope on the edge of the Chiltern Hills inBuckinghamshire, England. The main entrance is on the upper floor, facingtowards a sheltered entrance forecourt to the South East. The main views are tothe North West from the upper floor reception spaces, and from the bedrooms onthe lower floor. The garden consists of a level lawn, overlooking a smallorchard and rolling farmland that extends as far as the eye can see. The upperfloor contains an entrance area, cloakroom, and open-plan kitchen/living space,and the lower floor contains two bedrooms, two bathrooms, a boot room, and autility room.
The main garden façade faces North Westand is entirely glazed, with large windows and a terrace. Solar gains arelimited because most of the glazing faces to the North West. Partiallyunderground construction to reduce visual impact on a protected landscape areaand northerly orientation certainly help to maintain stable and comfortabletemperatures in Summer and Winter and help avoid summer overheating.
If you had to do it again?
We are doing it again for another client, using low-cost construction on a level site at 1/3rd of the cost.
Building users opinion
Very happy that the house is gaining so much interest around the world as a pioneering example that might one day be the norm.
- 80,00 kWhpe/m2.year
- 200,00 kWhpe/m2.year
- 42,00 kWhfe/m2.year
- 0,12 W.m-2.K-1
Real final energy consumption
- Heat pump
- Heat pump
- No cooling system
- Natural ventilation
- Nocturnal Over ventilation
- Double flow heat exchanger
- Solar photovoltaic
- Heat pump
- 200,00 %
- 16,00 KgCO2/m2/year
Life Cycle Analysis
Indoor Air quality
Health & Comfort
LIGNO TREND Roof system
Ralf Harder (R.Harder@lignotrend.de)
Gros œuvre / Charpente, couverture, étanchéité
Load-bearing insulated CLT ceiling component
Kaufmann Zimmerei und Tischlerei, Reuthe, Austria - first floor timber frame structure and finishes.
Shoeck Isolators for balcony connections