My Lords, I shall speak briefly to this because the noble Baroness, Lady Parminter, has made most of the points that I would want to make. My name is also on Amendment 119 and I would like to go on to refer to Amendment 120, on which my name comes first. But to add briefly to what the noble Baroness has said, the real problem is that developers still have the automatic right to connect to the existing sewerage system. We know from estimates that more than half the existing sewers are already overloaded. While developers have the automatic right to connect, they are not incentivised to look at other ways of managing surface water flooding. Furthermore, when SuDS are installed, there is no clarity in the current regime about who should pay for the maintenance once they have been built. In any case, the current guidance applies only to developments of 10 homes or more, so small urban infill developments which could be creating some of the biggest long-term problems are not covered. Around 100,000 minor planning applications are approved each year which are not subject to the new safeguards.
So the aim of this amendment is to ensure that SuDS are the default option in new developments and to help achieve this by removing the automatic right to connect to existing sewerage systems. Connecting new developments to existing sewers should be the absolute exception, once other options have been exhausted.
I turn to Amendment 120 on developer liability. This amendment focuses on the long-term costs for society arising from continuing development in the flood plain and presents a simple, workable proposal to address the current lack of incentive for developers to make new properties safe and resilient to flooding. We know that, at the moment, more than 100,000 homes have been built in the flood plain since 2008—28,000 of these in areas at a greater than one-in-100 annual chance of flooding, taking into account the protection provided by any flood defences. The consequences are that, in the long run, owners of new homes are being exposed to unnecessary flooding risk.
A one-in-100-year chance sounds very small. We have to remember that this is the chance of flooding in a particular place. If there are 100 such places, then there is the likelihood that someone will get flooded every single year. In fact, in this century, we have already had 12 significant flood events in 15 years. If we carry on as at present, we can more or less guarantee that someone, somewhere, is going to suffer the trauma of flood damage each year.
Data are not collected on whether or not new homes that are built in flood plains are made resilient. I declare an interest as the chairman of the adaptation
sub-committee of the Committee on Climate Change As has already been mentioned by the noble Baroness, Lady Parminter, our data suggest that fewer than 15% of new homes have been built with sustainable urban drainage systems.
Are we putting too much faith in flood defences to protect new developments, when they are typically built to a one-in-100-year standard? There is evidence that developers and planners are taking what might be called a compliance approach to flood risk— following the process but putting too much faith in limited protection from flood defences and not taking into account the uncertainty in even the best flood models.
A recent example, of which I am sure noble Lords are well aware, is Bridge End Court, a residential care home and sheltered development in Cockermouth. It was built in the meander of the River Derwent, on land that had flooded badly in 2009, on the very edge of a flood zone 3, where it would not have been deemed appropriate development. After the 2009 flood, the local authority had the chance to require the development to go elsewhere but it allowed it to go ahead in the same place. In spite of the ground floor supposedly being set above the height of even a one-in-1,000-year flood, the care home was flooded in December and the residents had to be rescued.
What constitutes a one-in-1,000 standard is highly uncertain. This is where developers come in. Developers are required to produce a flood risk assessment for a site, but they bear no liability if they take risks or simply get it wrong. The assumptions in the flood models that underpin a flood risk assessment can be selected either to increase the assessment of flood risk or to make it appear lower than reality. I should emphasise that I have seen no evidence that developers are manipulating flood risk assessments but, in principle, they could.
It is worth noting some Environment Agency figures. The Environment Agency has to be consulted on developments and it objects to about 3,000 applications per year on grounds of flood risk. In a sample of nearly 1,700 objections between 2009 and 2013, 20% of those objections were because the developer had produced no flood risk assessment whatever and 54% of them were objected to because the flood risk assessment was unsatisfactory. Among the reasons they were unsatisfactory were that they did not take into account future sea level rise, future increases in river flows or future increases in surface water flooding.
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So what happens if a home owner in a new development is flooded out? Their only option is to claim on their insurance, which is likely to produce an increase in the cost of insurance in future. Furthermore, the value of their property is likely to fall. There is a simple way in which to address this problem without putting the burden on the home owner, at the same time as increasing the level of confidence in the planning system. That is to make developers liable for any flood damage to new homes—not, of course, in perpetuity, as that would be difficult to impose, but for a fixed period, perhaps the first 10 years after the property is
first sold, as the amendment suggests. This would bring things into line with the 10-year NHBC buildmark warranty available for new homes. The policy currently explicitly excludes flood damage.
If developers were made liable, it would create a direct financial incentive for housebuilders to assess flood risk properly and introduce measures needed to prevent flood damage. If developers are already managing flood risk appropriately, this will be a zero- cost measure yet will still provide added confidence in the system. My amendment will help to protect those who buy new homes built on a flood plain, and I hope that the Government will give it serious consideration.