The eastern extension of the building stands on the site of Doctors' Commons whose members had lower-courts say in ecclesiastical (including, during its currency, probate and divorce) and admiralty matters.
The new building included a raised central portion with decorative turrets which was highly controversial at the time as it blocked the view of St Paul's Cathedral from the River Thames.
The complex is one narrow block west from Peter's Hill which is the northern footpath to/from the Millennium Bridge; the College of Arms stands in the intervening space.
[2] In 1890-94 an extension was built in Carter Lane, immediately to the north, by Sir Henry Tanner, linked to the earlier building by a bridge and a tunnel, over and under Knightrider Street.
It has one-bay chamfered corners on its east side (Godliman Street) which mean the footprint of the building is, at fine level, an irregular hexagon rather than its general form of a slightly tapering rectangle.
The windows across the western "half" of the building give away its on average lower ceiling height and this section slightly projects from the rest of the main, long, façade (which was added a few years later).
This led directly to regulations protecting views to and from the dome from a number of vantage points by restricting the height of new buildings constructed in certain designated areas.
[6] The City of London School and another telephone exchange, Baynard House, were built between the riverside and Faraday Building but are restricted in height to just three levels above ground.