The study of how family life has changed since the 1960s - carried out by The Future Foundation - found that living alone is now the norm in the UK.
It also found there are now fewer families with children than ever before, but those who do have children spend more time with them.
31 mins a day with children
10 mins a week exercising
25 mins a week entertaining
100 mins a day cooking
13 hours a week cleaning
26 mins a week cooking
Just 40 years ago the traditional family unit household made up half of all households in the UK, according to the study.
Researchers questioned three generations of families on their attitudes to family, finances and parenting.
They found that although there may be fewer traditional family households in the UK, relationships appear closer than ever before.
Families are spending significantly more time together than past generations, according to the findings.
Excluding time spent eating together, today's parents spend an hour and a quarter a day with their children compared with only 31 minutes in 1961.
Janet Connor, of Abbey National, which commissioned the study, said: "Our findings point to an interesting paradox: as singleton and childfree family units fast become the norm, there are fewer families in the traditional sense of the word.
"However, the conventional family - albeit there are less of them - is perhaps a closer unit than ever before with more quality time spent on parenting and relationships.
"The changing shape of the UK family means businesses and society will need to carefully reappraise their understanding of family life."
Jill Keep, spokeswoman for the National Family and Parenting Institute, said the changes should not be over estimated.
"There are profound changes in family structure that have happened over the last 40 year but the majority of people in this country are still married," she said.
"We also should remember that people are living longer and there is quite a long period after your children have left home when you would be classified as living in a single household."
But Dr Clifford Hill, from the Family Matters Institute, said an attitude change was needed to strengthen traditional family life.
"A first step toward strengthening family life and protecting children has to be recognition of the affect of family breakdown and its cost both financially and in human suffering," he said.
"Above all a cultural change is needed at grassroots level to strengthen family life, which is the foundation of a stable, prosperous and caring society."