Restoration team to work up bill for cost of Parliament repairs as review says full decant ‘will save billions’

Plans to fully decant the Palace of Westminster to allow for the restoration and renewal of the Houses of Parliament have been given the go-ahead by a long-awaited review into the multi-billion-pound programme.

Work by firms including BDP to design the complex restoration will now continue but with a “renewed focus” on minimising costs and timescales, including cheaper and shorter decant options.

It added that keeping peers and MPs on site while work is carried out will cost billions more and take decades longer.

But it said starting work from the river side of the building could allow both the Lords and Commons to remain in-situ for the time being which could reduce any period of inoccupation, although it admitted construction works on the river frontage may make some rooms uninhabitable due to noise and cited the refurbishment of the Royal Festival Hall 15 years ago where some works had to be rescheduled to night after the noise “became intolerable to front-of-house operations and office-based staff”.

The review by the project’s sponsor board found that the grade I-listed building is falling apart faster than it can be fixed, with the cost of maintenance projects and ongoing works recently doubling in just three years to £127m a year in 2018/9.

It advised the government that it was therefore “imperative” to push ahead with the plans.

No official figure has been put on the cost of the work but earlier this year Public Accounts Committee chair Meg Hillier told Building that she expected it to be at least £12bn.

But today's report said the restoration team will now develop a detailed proposal, that will finally show estimated costs and designs.

This work will include more than 100 investigative surveys, with specialist teams spending thousands of hours analysing the building, including the 1,100 rooms and more than 3,000 windows.

The 85-page report, which was originally due to be published last autumn, made seven key recommendations including that Richmond House and the QEII conference centre be used as the temporary homes for MPs and peers respectively.

Despite this, there are still doubts over whether AHMM’s plans to redevelop the grade II*-listed former Department of Health headquarters into a temporary Commons debating chamber and associated offices, will be delivered in full with worries centring on costs.

It added one option to cut costs would be to put a Commons chamber in the courtyard of Richmond House and convert the existing space into Grade A office space, rather than the current plan of demolishing the building and rebuilding it. Work is due to be carried out by Lendlease, with Mace project manager on the job.

But the report added: “Whilst this looks promising on the surface, the compromises involved are very significant. A compromised chamber with a sub-standard solution on division lobbies, no committee rooms within the secure perimeter...Given the level to which facilities are compromised, it is unlikely that that this scheme is actually viable in terms of ensuring Parliament can continue to carry out its core functions.”

The review said it should continue to be pursued as the decant solution for the House of Commons but told the delivery team to “explore the optimum use of Richmond House as a temporary location for the House of Commons, taking into account the wider works planned on the Northern Estate and the work on estate-wide masterplanning”.

It said that with the Northern Estate Programme, which includes overhauling a series of listed buildings including Norman Shaw South and North and which was closed last November, there was a “real potential for escalation of costs” if both houses moved out to the estate making “initially attractive cost savings” redundant. It added: “This option should not be pursued further.”

But it said the Northern Estate, including Richmond House, would be able to “meet Parliament’s operational needs and provide value for money without [an] unnecessary call on public funds”.

The programme has also announced a major apprentice loan scheme for small and medium construction and heritage businesses working on the project. Around 160 apprentices, including engineers, designers, stonemasons, and carpenters, will be employed by the organisations overseeing and delivering the restoration.

Mace, Lendlease, Wates and AHMM have all been contacted for comment.