Rent becoming 'unaffordable' - Telegraph A disproportionate number, 570,000, are younger families, the report said, where the head of the household is under 35 years old. Vidhya Alakeson, deputy chief executive of the Resolution Foundation and joint author of the report, said: "Many families are struggling to find any type of housing which fits both their needs and their budget. Often they are making difficult choices which mean going without other essentials to pay their housing bills or living in overcrowded conditions - all this at a time when other living costs are rising. We've become used to the idea that buying a property is now an impossible dream for millions of people on low to middle incomes - in a typical case it would take 22 years just to save the deposit. But, increasingly, private rent is also becoming unaffordable, even though, for many families, it is the only option. The analysis draws on detailed information about how much families are spending on housing, particularly at the lower end of the market. It looks only at regular monthly housing costs - so does not take into account the cost of saving a deposit in order to buy a house or secure a rental property. The Resolution Foundation said the result of excessive housing costs is that families often have to make trade-offs with other areas of their spending such as furniture, clothing, travel or even food. Using the example of a couple with one child on an annual income of £18,000, the report calculated how affordable different parts of the country would be. Islington in London was 'unobtainable', with a monthly rent on a two-bedroom property of £1,630 - equating to 108pc of their net income. The monthly mortgage repayments on an equivalent property would take up 95pc of their income. An equivalent property in Guildford, Surrey, would be "expensive," with the monthly rent of £950 equating to 63pc of the family's income and monthy mortgage payments 57pc. Coventry in the West Midlands would be "tough but affordable" and Doncaster in south Yorkshire would be "affordable" - here monthly rent drops to £410 and accounts for 27pc of income, the report said. The analysis draws on information from property analysts Hometrack and data from the Government's Family Resources Survey.