Renovating Old House for a New Look

I have planning to renovate my Old House to get a new look. Your Idea and experience will help me to renovate my house with new ideas and avoid
unnecessary wastage in renovating old house. I hope u will help me in completing my dream house . I want to give u a brief Idea about my House . Front Room &
Back Dining Room are Conncrete . Total 4 Bedroom Front Room- Concrete . All other 3 Bedroom are not concrete with clay Roof Tiles and Wooden Frame ( Old House Style)
This house I bought before 25 Years around 50 Years old . Ground Floor house renovate by owner who bought old house before I buy . All bedrooms are Clay Tiles & Wooden Truss
I attached GROUND FLOOR DRAWING for your evaluation. This house I standing in 40 Cents of Plain Land

If you have any representative in kollam pls visit my house in kollam and give me a idea regarading how to rennovate the old house on budjet rate