The maximum mortgage term has risen to 35 years from 30, and the bank will now accept flats and maisonettes shorter than four storeys.
Properties must not be ex-local authority or ex-Ministry of Defence.
Across its 80 per cent LTVs, the bank has upped the maximum loan size from £750,000 to £1m.
Clydesdale Bank has also added a pair of 90 per cent LTVs to its range. The two-year fixed has a rate of 3.42 per cent and the five-year fix is set to 3.66 per cent. These products have fees of £999.
For these products, loan sizes vary between £540,000 and £750,000.
The bank has reduced rates on two and five-year fixes with a £999 fee at 75 per cent LTV with pricing starting from 1.32 per cent.
The five-year fixed fee-free alternative has been cut to 1.72 per cent.
Meanwhile, it has simplified the fee structure on all its capital and interest repayment mortgages for loan sizes up to £1m. All fee-paying options now have a standard fee of £999.
These changes are effective from today.