Houses in the Inner City were normally built in the Victorian era/ pre WW1 and so reflect the requirements of housing at these times. They are normally terraced houses located on long, straight roads in a grid system, with small gardens so to fit as many houses as possible into a small space. In most cases, these houses will open straight out onto the pavement, with minimal front gardens. Houses could be 3 or even 4 stories tall, so to accomodate multiple families during the rural-urban migrations occuring during the industrial revolution.
In contrast, suburbian housing was built post- WW2 up to the present day, where requirements were very different. 2 story, detached and semi-detached houses were more fashionable at these times as people searched for a "happy medium" between city and country. As such, suburban houses are more widely spaced, with larger gardens, parks nearby and wider streets (usually with "closes" and dead-end roads). Houses are normally larger (though not universally so) but most certainly have larger rooms. Driveways and garages allow for greater car-ownership during this period.