He continued his training period, working for the architect François Rolland (1806-1888), and then went on to work for Henri Labrouste (1801-1875) before establishing his own architecture practice around 1855. Blondel was able to profit from the massive redevelopment of central Paris instigated by the emperor Napoleon III, and masterminded at more a detailed level by the Baron Haussmann. The new broad streets and avenues called for the construction of many new buildings, featuring the artistic-heroic style of the Second Empire. Blondel had a long association with banker Armand Donon, with whom he was involved in numerous real estate developments.[8]
On 29 July 1895 Blondel was condemned for bankruptcy by a local court, in respect of indebtedness totalling slightly more than 25 million francs.[11][12]
^The spelling of "Henry" (as opposed to the usual French language spelling of the name "Henri") come from the record of the registration of his birth in the city of Rheims, and is copied in the citation for his Légion d'honneur award. See Database Léonore|LH/260/49 [1]. Note that some (though not all) sources identify his as "Henri Blondel" and not as "Henry Blondel", however.
^Xavier Bezançon, Les services publics en France. De la Révolution à la Première Guerre mondiale, pp. 137-152, Presses de l'école des ponts et chaussées, Paris, 1997, ISBN2-85978-286-9