Planning and Infrastructure Bill

Baroness Bennett of Manor Castle Excerpts

Committee stage
Tuesday 9th September 2025 Lords Chamber

Moved by

[Baroness Bennett of Manor Castle]

125: After Clause 51, insert the following new Clause—
“Access to data on overheating risk(1) For the purposes of supporting the making of local plans, spatial development strategies and planning decisions, the Secretary of State must make provision for local planning authorities to have access to relevant data relating to overheating risk.(2) The Secretary of State must ensure that data on overheating risk made available to local planning authorities is updated at intervals not exceeding five years.”Member's explanatory statement
This new clause would require the Secretary of State to ensure that local planning authorities have access to up-to-date data on overheating risk, to support the making of local plans, spatial development strategies, and planning decisions.

[Baroness Bennett of Manor Castle (GP)]

My Lords, I rise to speak to several amendments in this group, Amendments 125, 126 and 181, all of which address the issues of overheating.

I shall constrain myself to commenting on the amendments in my name, but this is the direction of the overall travel of the group. I do not have any particular attachment to the different means by which this issue is addressed here. What is very clear from the level of engagement is that there is a serious issue of overheating, as reflected by this group of amendments.

I shall start with a statistic that is quite shocking. Since 2016, about 570,000 new homes have been built without adequate adaptations to respond to increased temperatures. We have heard from Members of your Lordships’ House who are members of the Committee on Climate Change, and many of us in this debate will have heard from the reports about the inadequacy of climate adaptation. We were speaking in an earlier group about the inadequacy of dealing with flooding. This is overheating, which brings huge financial costs. We have had heatwaves this year but, if we go back to 2022, we saw temperatures over 40 degrees centigrade for the first time, which resulted in more than 3,000 heat-related deaths, the highest level of mortality since the first heatwave plan was written in 2023. We know that, with the climate emergency, this is going to happen more and more often at greater and greater levels. It is particularly the young and old who are most vulnerable to this, but we are increasingly in a situation where everybody is vulnerable.

To go back to a point that I raised on an earlier group about ventilation and so on, we are also going to see, sadly, an increasing number of fires, in natural environments and probably, as we saw in London in 2022, in urban environments as well. That is where we also have to think about wildfire smoke and its impact on human health.

I want to go to the issue that we keep raising again and again in amendments—that this is very much a social justice and inequality issue. It is broadly the more economically disadvantaged households that are at greatest risks from these overheating issues, although it is not just those households. Almost 5.5 million children, over half of those in England, are living in homes at risk of overheating; according to the English Housing Survey 2022 analysis by the Resolution Foundation, more than 1 million of those children are living in London, mostly in social housing.

These amendments look at allowing local authorities, where the local climatic data indicates elevated risk—which, in essence, now means everywhere in the UK—to take specific action under the Town and Country Planning Act. Also—and this is important, and it is crucial that we discuss it under my Amendment 181 about cooling hierarchy guidance—we heard during the recent heatwaves that we have experienced in the UK a great deal of discussion about air conditioning: “Why do we not have air conditioning? Why don’t we install air conditioning?” Of course, the problem with air conditioning is that it is innately counterproductive: you are cooling the home and heating the outside, whether that is through the electricity used or even very directly, with urban heat islands, and so on. Air conditioning is not the answer—and then there are the inequality issues that arise from that as well.

Amendment 181 talks about the Secretary of State providing guidance to local planning authorities to outline a cooling hierarchy and provide guidance on how it is applied. This is where again—it is the problem with green politics of everything being related to everything else—I have to cross-reference back to our discussion about nature. One of the best ways to provide cooling in environments is to have trees and greenery; it is much better than concrete, as it reflects back the heat heating up the area around it. It is about having a structured approach and looking at greenery and at passive and sustainable design elements.

Let us think, for example, of the people of Yemen, who have a traditional architecture, in the hottest temperatures that humans can just about stand, that is cool and comfortable, based on centuries of knowledge of how to build in ways that encourage breezes and bring the air coming over. We come back to the noble Baroness, Lady Willis of Summertown, not currently in her place, and the value of water as a key cooling element—a breeze coming across water, circulating through a house and cooling it down; shades in the right directions and in the right places; and, obviously, the thermal mass of a house so that it does not heat up too quickly but also ensures that it can cool itself down.

--- Later in debate ---

[Lord Wilson of Sedgefield (Lab)]

To the first part of the noble Lord’s question, there has been an energy follow-up survey, which said that energy-efficiency measures that have been taken over recent years have not significantly increased the risk of overheating. On his second point, I will write to the noble Lord and give him the specific answer to his question.

[Baroness Bennett of Manor Castle (GP)]

My Lords, this has been another rich and full debate, and I thank the Minister for his answers and everyone who has taken part in this debate. It will, I am sure, please the Whips to know that I am not going to run through the whole lot, but I want to pick out a couple of highlights.

The cri de coeur from the noble Lord, Lord Krebs, was “nobody listened”. I cannot help feeling that—we are here rather late in the evening, talking about what are truly matters of life and death, and this is perhaps not the ideal way to do it, but we are doing the best that we possibly can. I apologise to the noble Lord, Lord Ravensdale, for failing to acknowledge his signing—I think I lost a page somewhere in the general pile of a very long evening. I thank the noble Earl, Lord Russell, particularly for picking up the embodied carbon point, which is so crucial, as we have just been discussing. I particularly want to highlight, too, what the noble Baroness, Lady Young of Old Scone, said in reminding us how close we got to net zero-carbon homes—

[Lord Wilson of Sedgefield (Lab)]

May I revert to being the Whip and ask the noble Baroness to move the decision? It is not about rehearsing the whole of the debate, which is what is happening, but about getting to the point of what she needs to be saying.

[Baroness Bennett of Manor Castle (GP)]

I am going to point to what the noble Baroness, Lady Young of Old Scone, said—how close we got, and a really bad decision was made. How do we make good decisions really quickly?

Okay, I will come to what the Minister said. It relied on building regulations and compliance with those, but we know what is being built now is not complying even with the inadequate regulations we have now, and that issue needs to be discussed. The final point I want to make is this: the noble Lord, Lord Jamieson, said that we cannot do anything to interfere with much-needed housing delivery. We have to build houses that people can safely live in. That has to be an absolute prerequisite. But, in the meantime, I—

[Lord Jamieson (Con)]

I do not think I said that we cannot do anything. It is all about having a balance.

[Baroness Bennett of Manor Castle (GP)]

I accept the point made by the noble Lord, and I beg leave to withdraw the amendment.

Amendment 125 withdrawn.

--- Later in debate ---

[Baroness Thornhill (LD)]

It would certainly put more pressure on the council to allow that, which I think they should.

[Baroness Bennett of Manor Castle (GP)]

The noble Baroness talked about people who would not dream of participating. It is also worth stressing that certain people would not be able to participate because of disabilities, caring responsibilities and other reasons. In fact, given the responsibilities the Government have in terms of protected characteristics, surely that would make the argument for this amendment.