The house has laundry. The house has a 100amp service, its around 100 years old, which may sound old but is typical for this and many a neighborhood in cities. A typical new build house will have 200 amp service. 100 amp service isn't big enough to run both laundry and one of these chargers, along with all the other circuits you need in your house.
In other words, to just add a wire, breaker, and plug and get it to the garage (detached) you're probably talking $2-3k minimum:
-we're talking about digging or overhead wires (not sure if the city code will allow overhead)
-getting a permit from the city
-wires, breaker, etc
-labor to install
So, now with the above you can charge your car but you can't dry your clothes.
Adding a new service would often require you to update the entire house to bring it up to code. Even if it doesn't, its going to cost more than you think; you gotta have the power company come out to run bigger wires from the transformer to the house, the breaker box is almost certainly going to be a different size and shape, and some rewiring will almost certainly be required.