Connecting storm drain (outside of basement door) to weeping tile system

Hello,

My storm drain outside the basement entry door (this area is around 3 x 3 ft and is a step lower than surrounding areas and is all concrete) is connected to drainage system inside the home. Due to debris like sand, gravel, soil the drain is blocked and according to the plumber the snake & water jet will not work on it.

The plumber I consulted gave us two options

1) To change the entire drain pipe from 1.5 inches to 3"as the 1.5" is not enough. Build a catch basin and then connect it with 3" to the stack.

2) Dig 5-6 ft deeper and try to find the weeping tile installation and connect the storm drain directly to it totally bypassing it from the indoor system. I like this idea better but we are not sure whether our detached home build in 1989 (Brampton, ON) is installed with weeping tile system, It will be a wasted expense if the weeping tile is not found.

This is our own idea - build a French drain and take it to our backyard. Basement entry to backyard is covered by concrete pavers which can be easily removed and drain installed. Can't take it front as it will involving breaking through existing concrete for around 20 ft.

Looking for recommendations about best way to deal with it as all options involves a lot of money and I don't want to take any chances.