Her practice incorporates a full spectrum of private, government, and corporate work with a strong focus on environmental sustainability and community projects.

Her project, The Habitat Research and Development Centre, located in Katutura, a former black township on the outskirts of the capital city of Windhoek, offers services focusing on the housing needs of the Namibian community. The design optimizes the use of daylight and solar access, uses earth berm, conserves water, thermal mass, evaporative cooling, and uses appropriate building materials.

She studied architecture at the University of Cape Town (1985-91). She is a regular contributor to NIA Digest of Namibian Architecture.

Nina Maritz is the author of numerous papers on energy efficiency and sustainable building within developing countries; she has co-founded GREENSPACE, an NGO concerned with the conservation of urban environments, and SENS (Sustainable Energy Namibia Society), a network of alternative energy enthusiasts striving to increase the use and support of sustainable energy throughout the government and the public.

She was a member of the Holcim Awards jury for Africa Middle East in 2008.