A man and a woman sitting side by side indoors with white curtains behind them. The woman has reddish-brown hair, blue eyes, and is wearing a black top. The man has black hair, Asian features, and is wearing a white shirt. There is a plant on the left side, a mug, a stack of books, a magazine, and a lamp on the right side.

YKAAは北海道札幌市を拠点とし、現在は道内を中心に日本各地へと活動する建築設計事務所です。

住宅建築をはじめ、リノベーション、インテリアやサイン、家具デザインなどを通して、土地の空気と人の暮らしを豊かにつなぐ設計をしています。

自然との関係、素材の魅力、静けさのある空間を考えることで「そこにしかない自由な建築」を目指しています。

YKAA, founded by Atsuki Yamazaki and Maryana Kovalchuk in 2022, is an art and architectural atelier based in Sapporo, Japan, and available worldwide.

With a rich blend of experience in both Japanese and international environments, our team is uniquely positioned to create architectural value that transcends existing ideas and conventions.

Our commitment to a humanistic approach is underscored by our deep understanding of people’s needs and our unwavering appreciation for local craftsmanship, making our clients and the professionals we work with feel truly understood and valued.

山崎 貴生

Atsuki Yamazaki

1989年北海道生まれ。

北海道札幌西高等学校卒、

北海学園大学工学部建築学科、

北海学園大学工学研究課建設工学専攻 修士課程を2016年に修了。

2022年〜一級建築士事務所YKAAを設立。

2025年〜北海学園大学 工学部 建築学科 非常勤講師。

Architect ・Creative Director

Born in Hokkaido in 1989. In 2016, graduated from Sapporo Nishi High School in Hokkaido, completed a Master’s degree in Architecture from Hokkai Gakuen University's Faculty of Engineering, and majored in construction engineering at Hokkai Gakuen University's Engineering Research Division.

In 2022 he acquired First Class Architect registration and founded YKAA.

From 2025, Atsuki has been an assistant professor at the Department of Architecture, Faculty of Engineering, Hokkai-Gakuen University.

マリアナ・コワリュチュク

Maryana Kovalchuk

1990年ウクライナ生まれ、ポルトガル育ち。

FAUPポルト大学建築学部 修士課程 を2015年に修了。

2016年に北京の Chiasmus Partners での建築インターン (6ヶ月)。

2022年〜一級建築士事務所YKAAを設立。

Architect ・Creative Director

Maryana Kovalchuk (1990) holds a Master’s degree in Architecture from the FAUP Faculty of Architecture, University of Porto, with an exchange year at Politecnico di Milano.

In 2022, she founded YKAA. With extensive experience working with Japanese architectural firms in Japan, Maryana is a multidisciplinary professional committed to delivering outstanding results across architecture, design, photography, user experience, and project management.

建築設計事務所/ Architectural Atelier

YKAA(一級建築士事務所) First Class Architect registration by JAEIC

〒064-0804

札幌市中央区南4条西18丁目2-25モルティーニ南円山208号

Tel:080-1873-4317

e-mail:ykarchiatelier@gmail.com

業務内容/ Service Features

建築設計、リノベーション設計、インテリアデザイン、サインデザイン

工事監理上記に付帯する一切の業務

Our comprehensive range of services includes architecture design, renovation design (including akiya), interior design, furniture design, and coordination. We also provide support for design feasibility studies, land procurement, and assessment.

Our atelier is dedicated to delivering personalised services tailored to each client’s unique project and budget, ensuring that their specific requirements and needs are met.

掲載/Media

2025 ArchDaily

   「Hiraya Pavilion in Sapporo」

2025 DIVISARE

   「Hiraya Pavilion in Sapporo」

2025 DIVISARE 「Solarium House」

2025 鉄鋼技術2025年3月 vol.38

   「Villa Flodia」

2024 北海道建築作品発表会作品集   

   「Solarium House」

2024 Replan北海道 vol.146

   「Solarium House」

2024 ArchDaily 「Solarium House」

2024 Archello 「Solarium House」

2024 TECTURE MAG「Solarium House」