Cities problems worth solving

Who lives with itWater utilities and municipal engineers · households in intermittent-supply cities · regulators setting loss targets

Why nowA widely cited World Bank estimate, published in 2018, puts the water utilities produce but never bill, through physical leaks and commercial losses, at around 126 billion cubic metres a year, nearly $40 billion in lost value.

Why it mattersThe cheapest new water available anywhere is the water already treated, already paid for, and lost before it arrives. Turning a percentage into a location is most of the job, and it is an instrumentation and inference problem rather than a civil engineering one.

Who lives with itPeople looking to rent or buy in Dublin · young people and families trying to find a home · builders and developers with approved projects · employers trying to attract people who can afford to live in Dublin · public bodies responsible for housing and infrastructure

Why nowDublin has a substantial number of homes already approved, but too many are still stuck before construction. The Department of Housing reported in August 2026 that only 41.9% of the 80,285 homes with planning permission across Dublin's four councils had started by the end of June. Unstarted homes rose 10% in a year to 46,662, more than 41,000 of them apartments, and an estimated 6,664 have less than a year left on their permission. In July, the CSO reported that new-home completions in Dublin fell 16.4% year on year in Q2 2026.

Why it mattersThe city does not just need more planning permissions. It needs to turn approved projects into homes people can actually live in. Dublin's median residential property price was €500,000 in the 12 months to July 2026, and BPFI reports that the share of newly completed homes bought by households in Dublin fell from 55% in 2019 to 25% in Q2 2026. The opportunity is to find where projects get stuck, understand what is preventing them from moving forward, and help the right people act before another approved development sits unused. Developers and lenders would pay to know which stalled schemes can still work; councils and state agencies, to aim funding and infrastructure where they unlock the most homes.

Who lives with itWheelchair users and people with limited mobility · blind, deaf and neurodivergent travellers and people with hidden disabilities · carers planning a trip · venues that are accessible and cannot prove it

Why nowAccessibility information is still largely self-declared by the venue, with no shared definition of what the word covers and little route for correction when it is wrong.

Why it mattersA sharply defined information gap with a motivated community already producing the data for free. Structure is most of the product, and the people who need it are the people best placed to build it.