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The Boomerang Athens Dar by Vassilis Siafaricas

The Boomerang Athens Dar by Vassilis Siafaricas is a highly esteemed winner of the very prestigious 2025 Premju A' Design Award tal-Ħadid in Disinn tal-Arkitettura, Bini u Strutturi Competition Category.


ĦadidArkitettura· 2025

The Boomerang Athens Dar

by Vassilis Siafaricas

Client: Ecléde

Premju A' Design Award tal-Ħadid Winner in Arkitettura Category

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The Design

About The Boomerang Athens Dar

Il-Boomerang Athens tirrappreżenta r-rikostruzzjoni komprensiva ta' residenza oriġinarjament mibnija fl-2010, li issa qed tavvanza lejn iċ-ċertifikazzjoni LEED Gold. L-għan ta' dan il-proġett huwa li jiddefinixxu mill-ġdid il-lussu billi jagħti prijorità lis-sostenibbiltà, l-effiċjenza enerġetika, u t-teknoloġija innovattiva. Id-disinn bijofíliku tiegħu jinkorpora elementi bħat-tkessiħ passiv, insulazzjoni avvanzata, u sistemi ta' enerġija rinnovabbli, bil-għan li jilħaq impatt ambjentali minimu. Ir-residenza tintegra l-innovazzjoni mal-eleganza, u tistabbilixxi standard eżemplari għal għajxien urban sostenibbli f'Ateni.

The Recognition

About the Premju A' Design Award tal-Ħadid

The Boomerang Athens Dar huwa rebbieħ tal-Premju A' Design Award tal-Ħadid, rikonoxximent prestiġjuż mogħti lil disinji tajbin li jissodisfaw ir-rekwiżiti professjonali u industrijali mistennija minn ħolqien imfassal tajjeb. Ir-rebbieħa tal-Ħadid juru l-ħila kbira, l-ispeċjalizzazzjoni għolja, il-fehim espert u l-kapaċità kreattiva tal-ħallieqa tagħhom. Huwa mistenni li The Boomerang Athens Dar ikun ħolqien imqabbar ħafna, mammirat u maħbub li huwa prattiku u innovattiv. Dan id-disinn rebbieħ tal-Ħadid jintegra l-aħjar prattiki tal-industrija u għandu karatteristiċi tekniċi kompetenti marbuta mal-għarfien u t-talent. The Boomerang Athens Dar huwa rispettat għall-eżattezza tiegħu u mfassal biex itejjeb il-kwalità tal-ħajja u jgħin jagħmel id-dinja post aħjar.

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.

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