When a project is adding something new onto an existing design, sometimes the best decision is to make it as much a part of the original as you can.
At that point, the creative spirit flows into the details.
Each connection and piece expresses itself as something important, while showing it's connection to the other pieces around it; old and new.
So, the house keeps it's relationship to the neighborhood, the porch has a new relationship to the house and the details are what build a relationship with the people who come in contact with it every day.