Name of organisation: Mésolia Habitat
Stage of development: completed
Year of finalization: 2010
Type of project: construction
Area: suburban
Scale: group of buildings
Type of building: group of terraced houses
Number of units/dwellings: 10
Tenure: social rental
Street: Avenue Charles de Gaulle
Postcode: 33650
City: La Brède
Region/ County: Aquitaine
Country: France
Last Update: 17.04.2015
The Hameau de l'Espérance (Hamlet of Hope) consists in 10 semi-detached houses with private gardens and garages, build at the heart of a concerted development zone (ZAC - Zone d'Aménagement Concerté) with the aim to combine sustainable development, comfort and reduce energy costs for tenants.
Thermal Insulation
The external walls are composed of bricks with an external insulation. The separation walls between houses are composed of solid concrete blocks. The technique used for the structure is a parallel chord truss. For the ceilings under attic, the insulating material used is cellulose. Thanks to the high heat inertia, the dwellings benefit from a good summer comfort.
Work with Residents
A user booklet was distributed to the inhabitants.
Ventilation
A mechanical ventilation system with heat recovery was installed. This choice resulted from the necessity to comply with the levels of consumptions required to obtain the BBC Effinergie label. Moreover, this mechanical ventilation with heat recovery enables, through a high level of ventilation in summer, a cooling of the rooms.
Heating and Hot Water
The heating is ensured by individual gas boilers (12kW), these boilers also ensure the difference for the production of domestic hot water, which is uppermost produced thanks to solar thermal panels.
Water Saving
Rainwater is collected and water savings equipment was installed in the dwellings. Moreover, some advice in favour of electrical savings in the common parts of the buildings were given and the use of healthy material was favoured.
Partnership Working
Throughout the conception phase, architects were very involved in the project and worked closely with the energy engineering consultant company.
Funding
Costs | |
Statutory approvals | Rent-charge: 499€ without taxes / m² living area |
Design |
Intellectual services : 144€ without taxes / m² living area |
Construction overall | 1104€ without taxes /m² living area |
Low/zero carbon technologies | Extra investment cost of 3500€/dwelling for the solar thermal panels |
VAT | 5.5% |
Running costs | ENERGY EXPENSES Estimated and real expenses all taxes included per year and per dwelling Estimated energy expenses Maintenance (Heating+Ventilation+DHW): 168€ Consumption (Heating+DHW) : 144€ Subscription : 60€ Real energy expenses Maintenance (Heating+Ventilation+DHW): 206€ Consumption (Heating+DHW) : 240€ Subscription (including gas meters, electricity and DHW) : 180€
RENTS AND REAL EXPENSES (/m² living area.month) Rent + garage: 5.15 + 0.28 Energy subscritption + Energy maintenance : 0.37 Energy consumption: 0.23 Other expenses : 0.16 Total : 6.20 |
Maintenance – repairs and replacement | Extra maintenance costs related to solar energy and ventilation with heat recovery : 90€/dwelling for solar DHW |
Public financial assistance (loan/annuity/grant) | State + Regional + Departmental council fundings: 14% of the global cost Laureate of the contest Aliénor “Construction of low energy buildings” which implied a technical and financial support in return of a control of the performances. |
Ms Carine Puyol
USH - The French Federation of Social Housing Providers
E-mail: carine.puyol@union-habitat.org
Web: www.union-habitat.org