Northgate Park

I visited the new development on part of St Ann's hospital yesterday called Northgate Park. The flats look nice enough, although rather expensive and with a high service charge, but it started me thinking about how this development will impact transport in the area. The development is car-free, which is good as this area certainly can't take any more traffic, but it's a good mile from all the surrounding tube stations, and ten minutes' walk from Green Lanes. Which effectively leaves all those residents who need to use public transport reliant on just the 341 bus - not, in my experience, the most frequent service. How much are transport needs taken into account when planning new builds like this, and is TfL able/prepared to increas bus frequency to cope? (I'm not just thinking here of the residents themselves, but of other 341 users who might be squeezed out in the process.) I'm possibly overthinking this, but I'd be interested to hear other's opinions.