He studied at the Academy of Fine Arts Vienna until 1953 and worked in the office of Roland Rainer.

To pay for architectural school, he drew caricatures under a pseudonym to protect his identity from the Red Army, which occupied Austria at the time.

He later drew cartoons for major newspapers such as Kurier, Express, Süddeutsche Zeitung and Die Presse.

Peichl built the EFA Radio Satellite Station in Aflenz Austria.

He was a member of the international jury that chose Carlos Ott as the architect for the in Opéra Bastille in Paris, in 1983.