He is best remembered for the extant Tretyakovsky Proyezd shopping arcade and the cathedral of Nikolo-Ugresh monastery in present-day town of Dzerzhinsky.

In Paris, he met Pavel Tretyakov, a young member of an influential Muscovite business family and an art collector.

Since 1867, Kaminsky was also a house architect for Moscow Merchant Society, an ambitious real estate consortium that redeveloped territories of Kitai-Gorod, Neglinnaya Street.

For about thirty years, Kaminsky was teaching at the Moscow School of Painting, Sculpture and Architecture and training its graduates within his firm (his alumni include Fyodor Schechtel, Ivan Mashkov, Ilya Bondarenko, Max Hoeppener).

Saving his reputation, Kaminsky founded and edited a magazine (Russian: Художественный сборник работ русских архитекторов и инженеров, 1890–1892), promoting his own works; he ultimately failed to return into the business, lost the job with Merchant Society in 1893 and died in 1897.