Architecture

Civil engineering and architecture are two really different branches and hence it is not advisable to pursue architecture after doing civil as you must have already spent 4-years for B.Tech and B.Arch is for 5-years (which sums up to 9-years in total!). I will instead recommend you to do your Masters in Planning (M.Plan) or M.Arch in any of the streams of your choice so that you get a touch of architecture also and have your master degree too. However, the School of Planning and Architecture, New Delhi-110002, provides specialisation options for meritorious civil engineering graduates in its M.Arch. program and related fields.
The school conducts the two-year M.Arch. program with a specialisation in architecture conservation, industrial design, and urban design; Master of building engineering and management program (MBEM); Master of landscape architecture (MLA) and Master of planning course with specialization in environmental planning, housing, regional planning and transport planning.
You can visit the links below for more Information.
Options for civil engineering graduates
Options for civil engineering graduates
Hope this helps you.
All the best!