The number of buy to let mortgage products has leapt to 953 - an 11 per cent increase in the past three months.
Mortgages for Business, which has conducted the survey of products, says this compares to just 707 different buy to let mortgages a year ago.
In its survey of the wider BTL landscape, Mortgages for Business says yields for HMO landlords have performed well - they remain at 9.0 per cent despite a small dip in recent months.
Stand-alone buy to let properties already offer the lowest gross yield to landlords, however, and in the past three months this has dropped a further 0.8 percentage points to 5.0 per cent.
The yield on multi-unit freehold blocks have dropped in recent months too, and is now at 6.1 per cent. A year ago, the figure was 8.6 per cent.