Norbert Niwelt

Norbert Niwelt is a modestly rated but responsible site manager. Across their buildings, tenants rate them 3.3/5 across 6 reviews, with 34% recommending their buildings and 34% approving of them as an owner or associate. Their portfolio records 0 evictions, 18 open violations, and 1 litigation case. Data last updated August 8, 2026. Norbert Niwelt is a site manager associated with 1 building and 35 units in Gramercy Park, Manhattan. The portfolio is concentrated in Gramercy Park in Manhattan. The building was constructed in the 1920s and is primarily mid-rise. All of the associated buildings have rent-stabilized apartments. Renters can review each building's ratings, reviews, and public records on its own page.