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The government cannot deliver on its housing targets without supporting category one modular building, the chairman of TopHat has told the House of Lords. 

At a Built Environment Committee hearing on recent failures in the modern methods of construction (MMC) sector, Carl Leaver said the shrinking labour market meant it would be impossible to build 300,000 homes each year without industrialisation of housebuilding. 

鈥淚 would say that without category one modular there is absolutely zero chance of building 300,000 homes in this country 鈥� I mean zero,鈥� he told peers on Tuesday. 

Category one is a form of MMC in which three-dimensional units are manufactured in a factory and transported and combined on site to create a home. 

Leaver continued: 鈥淢y evidence for that is we have never done it before [鈥�] and if you look at what is happening in the employment universe for traditional construction it is terrifying.  

鈥淏efore the global financial crisis there were 2.6m employees in construction, today that is 400,000 less and of that, about 500,000 鈥� so nearly 25% 鈥� are over 55.鈥� 

He told the committee that the sector needed greater certainty in terms of demand in order to achieve the scale necessary to make a profit, noting that this was particularly true for category one because the factories are bigger and fixed costs are higher. 

Comparing the potential of MMC to the automation revolution introduced to car manufacturing by Nissan in the UK, he questioned why the government has not given the sector greater financial backing. 

鈥淣issan built that factory in the UK with hundreds of millions of pounds worth of government support. We have had none. We are trying to change a whole industry with private money,鈥� he said. 

Leaver suggested that the government could assist this transition by ringfencing 10% of the Affordable Homes Programme for category one MMC and introducing stamp duty reductions for highly energy efficient homes. 

Asked by peers about the recent high-profile failures of L&G Modular and Ilke Home, Leaver said both firms had taken on too much risk on groundworks in order to maintain volume through their factories. 

 What went wrong for Ilke Homes?

Read more: Modular without the factory: Modulous鈥� plan to turn offsite building on its head

鈥淐ritical to the success of modular is that we get to scale and we have highly automated facilities 鈥� neither Ilke nor L&G were highly automated, incidentally [鈥�] if you have got scale and automation that means that these are really quite heavy investment and to pay back on those investments you need consistent demand,鈥� he said. 

鈥淭he biggest issue we have all faced since Covid is the stop-start nature of the customer base 鈥� so the people who actually want to develop houses and buy houses 鈥� and also the planning system, which is frankly very slow and dysfunctional.鈥� 

鈥淚f you have a project that is stalled or cancelled, you have still got a factory and you have still got hundreds of employees that you have got to pay, so that consistency of demand is absolutely critical.鈥� 

He added that it was unfair to judge the entire industry based on a few bankruptcies, noting that 鈥渨hen a traditional contractor goes busy, nobody says the whole of the contracting industry is going to go bust鈥�. 

Leaver also said he was 鈥渆xtremely concerned鈥� about initiatives within the Department for Levelling Up, Housing and Communities (DLUHC) aimed at creating standardised kits of parts for developers to use. 

He said he understood the motive for standardised MMC for major public building projects, where the government is the client and wanted a large number of units 鈥渂uilt the same way, with the same methodology, to reduce costs鈥�, but that such an approach was inappropriate for housing. 

He suggested DLUHC was trying to go beyond regulating outcomes, such as heat and carbon performance, to set design standards down to how MMC homes are built and transported. 

Leaver said this was akin to a 鈥渃entrally controlled economy鈥� and that design variety would be important for MMC to be accepted widely as a housing option.