Rosaline began her business in 2011, after a decade of working at Barry J. Hobin and Associate Architects, as well as 4 years of work in Toronto and London, England. As both architect and development consultant she has a wide experience of infill development in Ottawa. Her projects are largely residential and are part of the streetscape of neighbourhoods across the nation's capital, from custom singles to 'missing middle' development to mid-rise apartment buildings. Rosaline's thorough knowledge of Ottawa's Official Plan and other regulations allows for designs that win approvals and make the City a better place to live. She has consulted for the City of Ottawa on R4 zoning, and volunteers with GOHBA providing input on upcoming infill bylaws. Rosaline has recently engaged in extensive research on the patterns and forces governing neighbourhood evolution. In May of 2020 she founded Walkable Ottawa and now works collaboratively to advance walkability in urban neighbourhoods.