Benny started his career by joining Laurie Baker on site in 1984: 'Not joining the office, because Baker did not have an office! Here I had my basic lessons in architecture, which involved learning as well as delearning.' Then followed a stint as Joint Director with COSTFORD in Trichur, involving the construction of demonstration buildings using various cost-effective techniques.

After receiving the Charles Wallace India Trust award for an MA in conservation studies at the University of York, Benny joined the Integrated Rural Technology Centre, Palakkad, and worked with the Kerala State Nirmithi Kendra, coordinating training programmes for architectural and civil engineering degrees and diplomas.

In the nineties Benny decided to go back and spend some time in the village where he was born, trying to make some furniture. 'All designers should try their hand at furniture, working in close interaction with craftsmen, learning about various timbers… Even a centimeter makes a huge difference!'

One day, Benny received a call from the actor Mammooty asking him to design his house. 'I went to meet him on location, we worked out various details - and that's how, after a long gap, I decided to come back to architecture.' In 1994, after the earthquake in Latur, Malayala Manorama asked Benny to design the village of Banegaon, which was sponsored by them. He then shifted to Chennai to do the Kerala buildings and the Public Buildings in Dakshinachitra (a project of the Madras Craft Foundation at Muttukadu on the Madras-Mahabalipuram Road). He now decided to start an office in Chennai.

Among Benny's conservation projects are the conservation of St.George School in Chennai, Gables Bungalow in Conoor and reports on Srirangapatnam, Pondicherry, Anegundi Palace (Karnataka), and the Senate House in Madras University, as a consultant on various INTACH projects.

Recent architectural work includes design of the tsunami affected villages of Chinnangudi and Tarangmbadi in Nagapattinam District, the design of the Mayor Ramanathan Chettiar Centre in Chennai along with Architect Jeevan V, the layout for the village of Chapredi for the Kutch Earthquake Rehabilitation Project, the design of the Institute of Palliative Medicine at Calicut, and the Backwater Ripples Resort, Kerala. Benny has lectured as visiting faculty at the School of Planning and Architecture, New Delhi, Indian Institute of Technology and various other architecture schools. He has been a member on the Task Force on Urban Development for the 8th and 9th Five Year Plans, State Planning Board, and Government of Kerala.

He was awarded the Inside Outside Designer of the Year 2001. He has offered his services as consultant to UNDP, various State Governments and other organizations.