The Boomerang Athens Vaj Tsev by Vassilis Siafaricas

The Boomerang Athens Vaj Tsev by Vassilis Siafaricas is a highly esteemed winner of the very prestigious 2025 A' Design Award Hlau in Tsim Vaj Tsev, Tsev thiab Qauv Tsev Competition Category.

HlauVaj Tsev· 2025

The Boomerang Athens Vaj Tsev

by Vassilis Siafaricas

Client: Ecléde

A' Design Award Hlau Winner in Vaj Tsev Category

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The Design

About The Boomerang Athens Vaj Tsev

Lub Boomerang Athens sawv cev rau qhov kev rov tsim kho tag nrho ntawm lub vaj tsev uas tau tsim thawj zaug xyoo 2010, uas tam sim no tab tom mus rau qhov kev lees paub Leed Gold. Qhov project no lub hom phiaj yog los txhais dua txog kev khoom kim heev los ntawm kev tsom mus rau kev ruaj khov, kev siv zog zoo, thiab cov thev naus laus zis tshiab tshaj plaws. Nws tus qauv tsim biophilic muaj cov ntsiab lus xws li kev txias uas tsis siv tshuab, rwb thaiv tsev zoo heev, thiab cov tshuab hluav taws xob uas rov ua dua tshiab, nrog lub hom phiaj kom muaj kev cuam tshuam tsawg tshaj plaws rau ib puag ncig. Lub vaj tsev no koom ua ke cov tswv yim tshiab nrog kev zoo nkauj elegant, tsim ib tug qauv ua piv txwv rau kev nyob hauv nroog uas ruaj khov hauv Athens.

The Recognition

About the A' Design Award Hlau

The Boomerang Athens Vaj Tsev yog tus yeej ntawm A' Design Award Hlau, ib qho kev lees paub muaj meej mom uas muab rau cov qauv tsim zoo uas ua tau raws li cov kev xav tau ntawm kev ua haujlwm thiab kev lag luam uas xav tau los ntawm cov khoom tsim zoo. Cov neeg yeej Hlau qhia txog kev txawj loj, kev paub tshwj xeeb siab, kev nkag siab ntawm cov kws tshaj lij thiab lub peev xwm tsim ntawm cov neeg tsim. The Boomerang Athens Vaj Tsev xav tias yuav yog ib qho khoom tsim uas neeg hwm, qhuas thiab hlub uas siv tau thiab tsim tshiab. Cov qauv tsim yeej A' Design Award Hlau no sib xyaw cov kev coj ua zoo tshaj plaws ntawm kev lag luam thiab muaj cov yam ntxwv siv tshuab txawj ntse txuas nrog kev paub thiab txuj ci. The Boomerang Athens Vaj Tsev tau txais kev hwm vim nws tag nrho thiab tsim los muab kev txhim kho rau lub neej uas pab ua rau lub ntiaj teb zoo dua.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: This design is a Leed Gold to-be-certified, net-zero energy luxury residence that seamlessly integrates sustainability, smart technology, and contemporary aesthetics. Unlike conventional developments, it prioritizes energy efficiency, advanced automation, and biophilic design, ensuring minimal environmental impact without compromising elegance. Its smart home systems, innovative ventilation, and high-performance materials set a new benchmark for sustainable high-end real estate.
Dimensions & Packaging: The residence spans 425 sqm across four levels. Ceiling heights range from 2,800 mm to 3,200 mm, optimizing natural light and ventilation. Triple-glazed, thermally insulated aluminum windows enhance energy efficiency. Underfloor heating by Rehau, a vrv air-conditioning system by LG, and a knx automation network regulate indoor climate. The rooftop pool integrates a high-efficiency heat pump with dimensions 8 m x 3 mmm x 1,5 m.
Tags: Leed certified, Leed gold, smart home technology, sustainable architecture, luxury real estate, urban regeneration, biophilic design, energy-efficient materials, KNX automation, Double Regeneration Metropolitan Park, Athens luxury houses
Production Technology: The Boomerang design was developed using parametric modeling, energy simulations, and LEED-certified methodologies to achieve optimal efficiency. The structure was reinforced with high-performance insulation, thermally broken aluminum windows, and Rehau underfloor heating for passive energy savings. knx automation controls HVAC, lighting, and security, ensuring seamless operation. Sustainable materials, including low-voc finishes and photovoltaic-integrated pergolas, enhance both performance and aesthetics.
Design Challenge: The biggest challenge was balancing luxury with sustainability while retrofitting an existing structure. The historical challenge lay in preserving architectural integrity while modernizing the design. Socially, creating an eco-friendly yet high-end home required shifting perceptions of luxury. Externally, strict LEED regulations, energy laws, and material limitations demanded innovative solutions. Overcoming structural constraints and integrating smart, efficient systems was a key breakthrough.
Research: This applied research transforms an existing property into a Leed Gold-certified smart home with net-zero energy. Using structural audits, energy tests, and Leed guidelines, a team of architects and engineers optimized insulation, smart systems, and ventilation. Results showed enhanced efficiency, luxury, and sustainability. The project sets a new standard for eco-friendly real estate, proving that design, business, and sustainability can coexist seamlessly.
Inspiration: The Boomerang was inspired by the desire to harmonize sustainability with contemporary luxury while redefining urban living standards. It was motivated by the challenge of transforming an existing structure into an environmentally responsible, energy-efficient, and technologically advanced residence. Drawing from LEED principles, modern architectural trends, and the natural landscape, the design sought to create a seamless dialogue between innovation, functionality, and aesthetics.
Project Duration: The project began in Athens in late 2023 and will be completed in May 2025 as Greece’s first Leed Gold certified residence. It integrates net zero energy solutions, smart technologies, and structural reinforcements. Adjacent to the future Double Regeneration Metropolitan Park, it offers unobstructed views, urban cooling, and green access. This benchmark in luxury sustainable architecture enhances air quality, biodiversity, and the connection between urban living and nature.
Operation Flow: The Boomerang Athens is designed for effortless, smart living. The home adapts to its residents, adjusting lighting, temperature, and energy use automatically for maximum comfort and efficiency. Large windows flood the space with natural light while insulating against heat and cold. The rooftop pool and outdoor spaces create a seamless indoor-outdoor experience. With sustainable materials and energy-saving technology, it offers luxury with a conscience, reducing environmental impact without compromising comfort.
Team Members: Designer: Vassilis Siafaricas
Developer: Vassilis Siafaricas
Mechanical Engineer: Vasilis Mastrogiannis
Image Credits: Image #1: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.

Image #2: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.

Image #3: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.

Image #4: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.

Image #5: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.

Video Credits: Video by ANGEL BLEND.