housing finance
Refers to the system or business of providing loans for housing, including mortgages and related financial services.
I consulted a housing finance specialist.
The government plans to expand support for housing finance.
住宅ローン specifically means a housing loan or mortgage, while 住宅金融 is the broader concept of housing finance as a system or industry.
Compound of 住宅 (housing) and 金融 (finance).