Zagraevsky was the son of architectural historian Wolfgang Kawelmacher (1933–2004) and poet and dramatist Inna Zagraevsky (born 1933).

He began to paint at school and his first teacher was the Russian painter Tatiana Mavrina.

Between 2002 and 2005 Zagraevsky taught at the Moscow Institute of Restoration Arts, and subsequently at the Russian University of Intellectual Property and in the Vladimir-Souzdal Museum.
The main themes of his architectural history research are ancient Russian white-stone buildings, the early architecture of Moscow and architectural connections between ancient Russia and Romano-Gothic Europe.
His doctoral thesis was "North-Eastern Russian architecture from the end of 13th – first third of the 14th century".

Zagraevsky was the chief editor of the reference work "United Art Rating" and the author of a number of books on philosophy, theology and the history of architecture.
He has written a number of children's stories and many articles of art criticism.
He was the founder and curator of "RusArch" – the electronic scientific library on History of Old Russian architecture.

In 1992 he became a PhD of technique, received his doctorate in architecture in 2004, then became a Professor in 2005.
Zagraevsky was also a full member of Russian art critics Academy (since 2001), the AICA (since 2004), and the Writers union of Russia (since 2001), an Honored culture worker of Russia (since 2009), a member of Russian Academy of Arts (since 2013).

Spoke Russian, English, Hebrew, German, French, Esperanto.

Zagraevsky died on July 6, 2020 due to an acute cardiovascular failure.
Zagraevsky was the son of architectural historian Wolfgang Kawelmacher (1933–2004) and poet and dramatist Inna Zagraevsky (born 1933).
He began to paint at school and his first teacher was the Russian painter Tatiana Mavrina.
Between 2002 and 2005 Zagraevsky taught at the Moscow Institute of Restoration Arts, and subsequently at the Russian University of Intellectual Property and in the Vladimir-Souzdal Museum. The main themes of his architectural history research are ancient Russian white-stone buildings, the early architecture of Moscow and architectural connections between ancient Russia and Romano-Gothic Europe. His doctoral thesis was "North-Eastern Russian architecture from the end of 13th – first third of the 14th century".
Zagraevsky was the chief editor of the reference work "United Art Rating" and the author of a number of books on philosophy, theology and the history of architecture. He has written a number of children's stories and many articles of art criticism. He was the founder and curator of "RusArch" – the electronic scientific library on History of Old Russian architecture.
In 1992 he became a PhD of technique, received his doctorate in architecture in 2004, then became a Professor in 2005. Zagraevsky was also a full member of Russian art critics Academy (since 2001), the AICA (since 2004), and the Writers union of Russia (since 2001), an Honored culture worker of Russia (since 2009), a member of Russian Academy of Arts (since 2013).
Spoke Russian, English, Hebrew, German, French, Esperanto.
Zagraevsky died on July 6, 2020 due to an acute cardiovascular failure.
Sergey Zagraevsky