By household finance do you mean the personal finances of householders i.e. retail investors? If so, then chapter 1 of the attached may open a few ideas. This will take you to the Middlesex University (London, UK) research repository. If it helps your research, please give it a recommend.

Thesis An analytical tool to aid the reflective selection of equity...

Hello

You can go for

1. Behavioural finance of household .

2. Saving habit and Investment behaviour of the household of the area.

3. Financial literacy with banking services of the household.

hope this would be little help and work for you.

see this chapter : "Financial Sustainability and Personal Finance Education" and try to generate your idea

Chapter Financial Sustainability and Personal Finance Education

"Household and Sustainable Finance"

may be this link will be helpful

https://pure.au.dk/portal/files/187357388/PhD_dissertation_Vicke_Noren.pdf

Influence of financial sustainability of households on default risks of regulated banks

Thanks for all