Lozen Passive House is smart and sustainable to the core

The concept:

Passive House Lozen is a brainchild of architectures Svetoslav Michev, Hristo Stankushev and Rumen Yordanov. Designed for an architectural competition, the construction is a clear image of the future green for living. The architectural marvel is partially submerged into the ground and is a two and a half-story construction that is cubical in shape. The house will unfurl aesthetically pleasing views of Vitosha Mountain towards the west and that of the Sofia City on the north-west side, as it has been erected on the north side of the space provided.

The main rooms, like the living room, bedrooms and dining room, of the well designed home have been fitted windows that face towards the north-west. On the other hand, the library has windows placed on the wall facing the north-west. The location of the house favors ventilation, which will keep it beaming with freshness. As the name spells, the awe amazing concept makes good use of many passive house features. It has been erected by making good use of passive house complaint construction. This comprises of windows that are airtight passive certified along with insulated spacers. A lot of importance has been given to thermal envelop, while thermal bridges have been given a backseat.

Lozen Passive House

The Inspiration:

More use of electricity means escalating bills, which can leave a big hole in the pocket. Keeping the ever increasing electricity cost and in turn bills in mind the sustainable design was conceived. Passive House Lozen comes fitted with things that will save quite a lot energy by cutting down on heavy use of electricity. The inside will be well illuminated by natural light during daytime, which will save energy. The sustainable design will keep a check and will cut down on long electricity bills, which is a curse in today’s modern world.

Eco Credentials:

Passive House Lonzen is an ideal eco friendly housing option, which comes flooded with energy efficient and water saving traits. Solar panels ornament the roof, which harness solar energy for use in the house. The outside of the house features polystyrene with a thickness of 30cm, which make the outer skin insulated and airtight. The roof of has been placed in a slanting position, which gives the construction a favorable facade to area and facade to volume ratio.

Further energy efficiency is achieved by using CFL and LED bulbs that consume less energy, but don’t fall short on illuminating the area like any other conventional source. Conventional heat pumps will be replaced by geothermal heat pumps that have horizontal ground loops and put forward a great efficiency. Solar energy collected by solar panels will be converted into electric energy with the help of photovoltaic panels present in the design. Further, solar energy will also be swapped into a heat source that will provide hot water for domestic use via solar hot water collectors.

The water fittings have a low flow, which makes sure that this precious liquid does not go down the drain too soon. Underground water rather than fresh water is used to flush toilets and water plants. Also, grey water and rainwater is put to good use as it solves irrigation purposes of the construction. Providing additional thermal insulation is the vegetated roof, which adds on to the sustainable features of the design. The most interesting part is that the waste produced will not be thrown away but will be further recycled or reused for other purposes.


Sustainable housing is the need of the day and people are consciously opting for designs that come smothered with eco friendliness. Passive House Lozen is resource efficient and will help optimize the use of energy, which makes it a feasible housing design for the near future. Every effort is being made to save precious resources as well as keep the environment away from the clutches of pollution and the design does exactly this. Sustainable houses will become a hot favorite in the coming years, as they will provide the same comfort like a regular home and will also bring down the environmental impact caused during construction.

Related trends:

1. Sustainable home by Fiona Winzar Architects

Sustainable home

Swapping your dream of putting up in an eco friendly home is the attention grabbing creation by Fiona Winzar Architects. The home comes tagged with a very airy and inviting feel, which has everything that makes it energy efficient and in turn saves money as well. The most unique trait of the sustainable home is the roof extension that imitates the shape of an eyelid. It provides shade and lends the much needed privacy, keeping prying eyes at bay. The clean and green building comprises of solar panels, rainwater collection system as well as passive ventilation.

2. An eco friendly, wooden house concept by Batte Ronald

wooden hosue concept

Batte Ronald has designed a single bedroom wooden dwelling, which has been simply named the Sustainable House. Wood has an almost carbon neutral nature that doesn’t harm the environment with ant kind of toxins. It has been a material of choice for building homes from years at a stretch and the craze doesn’t seem to end even in this concrete world. But, don’t get disappointed by its single bedroom status as the sweet abode will include a bathroom, kitchen, living room and even a small swimming pool.

3. Lake House: A new concept in sustainable housing

Lake House

Based on sustainable design principles as well as renewable energies is the Lake House. The simple design has been made using minimum materials by Emre Senoglu and vows to occupy as less space as possible. The house makes good use of renewable resources, which will help keep the environment in a healthy state. Resources are recycled and given back to the nature like in form of water circulation. The sloped roof helps in collecting rainwater that is stored in the water tank for further use. Watering plants and can be done by reusing grey water.

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