Growth in private housing and infrastructure accounted for much of the rise, the ONS said, but this was partially offset by decreases in new public non-housing work and private housing repair and maintenance.

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Still, some industry analysts question whether some newcomers to student housing understand the hidden risks and high costs associated with the business, which requires more maintenance and management oversight than typical apartment housing.

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More than half of those who responded to the survey were not satisfied with standards of military equipment and resources given to them to do their jobs, while some 40% were unhappy with service accommodation, and 55% were dissatisfied with the standards of maintenance of their service housing.

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Last year's audit came after the Housing Executive's contract with the Red Sky maintenance company was terminated in 2011.

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"We know that most Housing Executive staff, overseeing those businesses contracted to respond to maintenance needs, are diligent and hard working, " she said.

BBC: PAC report says Housing Executive is 'out of control'

The Public Accounts Committee has accused the Housing Executive of being "out of control" in the way it managed maintenance contracts.

BBC: PAC report says Housing Executive is 'out of control'

And maintenance jobs at the new buildings will be offered on a priority basis to public housing residents, generating more employment opportunities for the community, Lopez said.

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