Under
Section 106, also known as “planning gain”, developers are required to provide a certain proportion of affordable housing in developments of more than 10 homes, ranging from 35–50% depending on the local authority in question. Developers who claim their schemes are not commercially viable, when subject to these obligations, must submit a financial viability assessment explaining precisely why the figures don’t stack up.
In simple terms, this assessment takes the total costs of a project – construction, professional fees and profit – and subtracts them from the total projected revenue from selling the homes, based on current property values. What’s left over is called the “residual land value” – the value of the site once the development has taken place, which must be high enough to represent a decent return to the landowner.
It is therefore in the developer’s interest to maximise its projected costs and minimise the projected sales values to make its plans appear less profitable. With figures that generate a residual value not much higher than the building’s current value, the developer can wave “evidence” before the council that the project simply “can’t wash its face” if it has to meet an onerous affordable housing target – while all the time safeguarding their own profit.