In particular, it will focus on the the regulatory regime (including changes introduced following the Mortgage Market Review), and any other barriers to entry, expansion or innovation.
It is also seeking views on consumers' ability to effectively access, assess and act on information about mortgage products and services, and firms' conduct and relationships.
Christopher Woolard, Director of Strategy and Competition at the FCA, said:
"For millions of consumers a mortgage is one of the biggest, if not the biggest, financial transaction they will enter into in their lifetime.
"The mortgage sector also plays a vital role in the financial services industry and many areas of the economy.
"Competition can play a key role in ensuring that the sector works well, delivering consumer benefits through lower prices, better customer service, and more product choice.
"We are seeking stakeholders' views on competition in the mortgage sector. These views, together with evidence from the FCA's wider programme of work on mortgages, will help inform any future FCA work on this key sector of the economy, including any future competition market study."
